Austenitic Stainless steel (316L) is a low carbon high chromium containing high alloy steel, it has a good number of application because of its high strength, high ductility and corrosion resistance. It is used in jet engine parts, heat exchanger application and pharmaceutical application. It is compatible in cryogenic temperature to red hot temperature. The paper presents an experimental investigation on different parameters which affect the cutting process and also cause significant effect on the chip formation in machining of Austenitic Stainless steel (316L). In this study, experiments were conducted on Austenitic Stainless steel (316L) at different cutting speed, feed and depth of cut and the effect of different influential parameters on the process of chip formation has been studied subsequently. Quality characteristic of machined item is depending much on material behaviour during machining. Present experimental analysis on machining has been performed by implementing Von Mises stress evaluation employing true stress-true strain behaviour of the materials under consideration. Experimental true stress-true strain plot was required to find out the strength coefficient and strain hardening exponent of the material and using the same, Von Mises stress was estimated by using material property consideration. Experimental study on machining was performed on austenitic stainless steel (316L) to know the trend of variation of chip thickness, shear angle, Von Mises stress and total work done with respect to cutting velocity. From the study it showed that austenitic stainless steel gets work hardened at higher cutting speed. Therefore this type of material can be machined at lower cutting speed only.
Investigation and analysis of metallurgical and mechanical properties of aa11...Alexander Decker
1. The document investigates the mechanical and metallurgical properties of friction stir welded joints of AA1100 aluminum alloy fabricated at different tool rotational speeds and material positions.
2. Tensile tests, microhardness tests, and optical/SEM microscopy of the welds were used to evaluate the mechanical properties and microstructure of the joints.
3. The results showed that joints welded at 1200 rpm had the optimum properties, with smooth weld surfaces and good tensile strength, yield strength, and elongation. Microhardness was also highest at this welding condition.
ANALYSIS OF TOOL USED FOR FRICTION STIR SPOT WELDING BY EXPLICIT MESHING SCH...vivatechijri
The document analyzes friction stir spot welding (FSSW) of titanium alloy Ti 6Al 4V plates using explicit finite element modeling. A 3D coupled thermal-stress model is used to simulate the FSSW process. Different tool profiles including circular, square, and triangular tips are analyzed. Results show that a circular tapered tip generates a temperature of 1032°C within the plastic range for successful welding, while square and triangular tips exceed the melting point of 1632°C. A conical tip produces a temperature of 894°C, also within the plastic range. It is concluded that FSSW with a circular tapered tool tip is most effective for welding 3mm thick Ti 6Al 4V plates.
Friction Stir Welding, a type of welding which was
discovered in the year of 1991 with a few countable methods
and processes. But today it is one of the necessary and
important type of welding techniques. To develop it, several
researchers showed their interests in this technique. Today,
it acts as the heart of welding of automobiles. Thousands of
inventions has been made in field of Friction Stir Welding
and also successfully being implemented. If a researcher
tries to make some research in this field, he has to go
through thousands of journals where hours of time is being
consumed. To solve that problem several Re-view journals
are being published and also successfully solved this issue
of time consumption. In this paper, similarly a re-view of
several important and different types of papers are discussed
with their results, outcomes, the parameters being performed
for analysis.
This paper also discusses about various methods and various
metals as tools and job materials. It will be much easier and
lenient to understand from this paper to research. The
authors of the papers also clearly explained about the usages
and applications of their methods and provided several
statistical data for clear observation of their methods
The main objective of this paper is to
determine casting defects generally happening in an
aluminium die casting process and efforts have been
taken to identify the tools which eliminate the casting
defects. In global prospective this study briefs the
application of the various tools that are used in the
industries for improvement of quality in foundry
industry. In our national prospective these tools are not
so popular, hence this study will help us to utilise the
available technology through which the productivity is
enhanced with safe and economical means. The QC
tools were used to analyse the casting condition of the
given pattern with three dimensional simulations for the
result preparation. This work has been carried out to
improve the quality of the pattern which is made with
gravity die casting process and this was achieved
through continuous quality control operation with QC
tools, then it was taken to test in some simulation
software. The latest trend available in casting and
foundry shops are the scientific approach in
optimization of all kind of fields including optimization
of defects in castings. These trends are incorporated in
the analysis of aluminium die casting.
This document reviews the friction stir welding (FSW) process. FSW is a solid-state welding technique invented in 1991 that uses a rotating tool to generate heat and plasticize materials being joined, allowing them to bond without melting. It can weld materials like aluminum alloys that are difficult to weld using conventional fusion welding. The document discusses the principles of FSW, factors that affect weld microstructure and properties like tool parameters and heat flow, and summarizes several studies that examined the effects of FSW parameters and post-weld treatments on mechanical properties and microstructure of welded aluminum alloys.
Effects and defects of the polypropylene plate for different parameters in fr...eSAT Publishing House
1. The document analyzes the effects of different parameters on friction stir welding of polypropylene plates, including tool pin profile, rotational speed, and welding speed.
2. Microstructural images and hardness tests were used to evaluate the quality of the welds under different conditions.
3. The results showed that a threaded pin profile with rotational speed of 2250 rpm and welding speed of 40-50 mm/min produced welds with the fewest defects in the polypropylene material.
Optimization of friction stir welding process parameter using taguchi method ...eSAT Journals
Abstract Friction stir welding (FSW) is relatively new solid state joining process. This joining technique is energy efficient, environment friendly and versatile. Welding is a multiinput-output process in which quality of welded joint is depends upon a input parameter. Therefore optimization of input process parameter is required to achieve good quality of welding. There are so many methods of optimization in which Taguchi method and Response surface methodology are selected for optimization of process parameter. In this review the effect of process parameter on welded joint studied and optimizes the parameter by using Taguchi method and Response surface methodology. The study of Friction stir welding of Aluminium alloy and High density polyethylene sheets shows the improvement in welded joint quality by optimization of process parameter. The main process parameters which affect the strength of welded joint is tool rotational speed, welding speed, axial force and tool pin profile. Keywords: Friction stir welding (FSW), Optimization, Taguchi Method Response surface Methodology Prediction models
This is the presentation of my 8th semester project on Application of Artificial Neural Network in Friction Stir Processing. We have used AA5052. The presentation starts from the basics of Aluminium and FSP process and then first we predict the properties of Hardness, Roughness and Tensile strength using Minitab16 and then use Minitab16 to create dummy outputs which are fed into the ANN to train it.
Investigation and analysis of metallurgical and mechanical properties of aa11...Alexander Decker
1. The document investigates the mechanical and metallurgical properties of friction stir welded joints of AA1100 aluminum alloy fabricated at different tool rotational speeds and material positions.
2. Tensile tests, microhardness tests, and optical/SEM microscopy of the welds were used to evaluate the mechanical properties and microstructure of the joints.
3. The results showed that joints welded at 1200 rpm had the optimum properties, with smooth weld surfaces and good tensile strength, yield strength, and elongation. Microhardness was also highest at this welding condition.
ANALYSIS OF TOOL USED FOR FRICTION STIR SPOT WELDING BY EXPLICIT MESHING SCH...vivatechijri
The document analyzes friction stir spot welding (FSSW) of titanium alloy Ti 6Al 4V plates using explicit finite element modeling. A 3D coupled thermal-stress model is used to simulate the FSSW process. Different tool profiles including circular, square, and triangular tips are analyzed. Results show that a circular tapered tip generates a temperature of 1032°C within the plastic range for successful welding, while square and triangular tips exceed the melting point of 1632°C. A conical tip produces a temperature of 894°C, also within the plastic range. It is concluded that FSSW with a circular tapered tool tip is most effective for welding 3mm thick Ti 6Al 4V plates.
Friction Stir Welding, a type of welding which was
discovered in the year of 1991 with a few countable methods
and processes. But today it is one of the necessary and
important type of welding techniques. To develop it, several
researchers showed their interests in this technique. Today,
it acts as the heart of welding of automobiles. Thousands of
inventions has been made in field of Friction Stir Welding
and also successfully being implemented. If a researcher
tries to make some research in this field, he has to go
through thousands of journals where hours of time is being
consumed. To solve that problem several Re-view journals
are being published and also successfully solved this issue
of time consumption. In this paper, similarly a re-view of
several important and different types of papers are discussed
with their results, outcomes, the parameters being performed
for analysis.
This paper also discusses about various methods and various
metals as tools and job materials. It will be much easier and
lenient to understand from this paper to research. The
authors of the papers also clearly explained about the usages
and applications of their methods and provided several
statistical data for clear observation of their methods
The main objective of this paper is to
determine casting defects generally happening in an
aluminium die casting process and efforts have been
taken to identify the tools which eliminate the casting
defects. In global prospective this study briefs the
application of the various tools that are used in the
industries for improvement of quality in foundry
industry. In our national prospective these tools are not
so popular, hence this study will help us to utilise the
available technology through which the productivity is
enhanced with safe and economical means. The QC
tools were used to analyse the casting condition of the
given pattern with three dimensional simulations for the
result preparation. This work has been carried out to
improve the quality of the pattern which is made with
gravity die casting process and this was achieved
through continuous quality control operation with QC
tools, then it was taken to test in some simulation
software. The latest trend available in casting and
foundry shops are the scientific approach in
optimization of all kind of fields including optimization
of defects in castings. These trends are incorporated in
the analysis of aluminium die casting.
This document reviews the friction stir welding (FSW) process. FSW is a solid-state welding technique invented in 1991 that uses a rotating tool to generate heat and plasticize materials being joined, allowing them to bond without melting. It can weld materials like aluminum alloys that are difficult to weld using conventional fusion welding. The document discusses the principles of FSW, factors that affect weld microstructure and properties like tool parameters and heat flow, and summarizes several studies that examined the effects of FSW parameters and post-weld treatments on mechanical properties and microstructure of welded aluminum alloys.
Effects and defects of the polypropylene plate for different parameters in fr...eSAT Publishing House
1. The document analyzes the effects of different parameters on friction stir welding of polypropylene plates, including tool pin profile, rotational speed, and welding speed.
2. Microstructural images and hardness tests were used to evaluate the quality of the welds under different conditions.
3. The results showed that a threaded pin profile with rotational speed of 2250 rpm and welding speed of 40-50 mm/min produced welds with the fewest defects in the polypropylene material.
Optimization of friction stir welding process parameter using taguchi method ...eSAT Journals
Abstract Friction stir welding (FSW) is relatively new solid state joining process. This joining technique is energy efficient, environment friendly and versatile. Welding is a multiinput-output process in which quality of welded joint is depends upon a input parameter. Therefore optimization of input process parameter is required to achieve good quality of welding. There are so many methods of optimization in which Taguchi method and Response surface methodology are selected for optimization of process parameter. In this review the effect of process parameter on welded joint studied and optimizes the parameter by using Taguchi method and Response surface methodology. The study of Friction stir welding of Aluminium alloy and High density polyethylene sheets shows the improvement in welded joint quality by optimization of process parameter. The main process parameters which affect the strength of welded joint is tool rotational speed, welding speed, axial force and tool pin profile. Keywords: Friction stir welding (FSW), Optimization, Taguchi Method Response surface Methodology Prediction models
This is the presentation of my 8th semester project on Application of Artificial Neural Network in Friction Stir Processing. We have used AA5052. The presentation starts from the basics of Aluminium and FSP process and then first we predict the properties of Hardness, Roughness and Tensile strength using Minitab16 and then use Minitab16 to create dummy outputs which are fed into the ANN to train it.
The document reviews friction stir welding (FSW), a solid-state welding technique. It discusses FSW's advantages over fusion welding in avoiding issues like porosity and cracking. The document then summarizes several studies on FSW of titanium and other alloys, examining effects of parameters like rotational speed on microstructure and properties of the welds. It investigates FSW of titanium to steel and aluminum to titanium, describing interfacial structures formed under different welding conditions.
Review Paper on Friction Stir Welding and its Impact on EnvironmentIRJET Journal
This document reviews friction stir welding (FSW), a solid-state welding technique invented in 1991. FSW involves plunging a rotating tool with a shoulder and pin into aluminum or other metal workpieces to generate frictional heat and plasticize the metals, joining them below their melting points. Key benefits of FSW include high weld quality, low distortion, no shielding gas or filler wire needed, and it is more environmentally friendly than arc welding. Process parameters like tool geometry, rotation speed, and pressure influence the weld microstructure and properties. FSW has applications in industries like aerospace, automotive, and shipbuilding.
Regression analysis of shot peening process for performance characteristics o...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
Cutting force and surface roughness in cryogenic machining of elastomerIAEME Publication
This document summarizes research on cryogenic machining of elastomers. Experiments were conducted to analyze the effects of rake angle, cutting speed, and feed rate on cutting force and surface roughness under ambient and cryogenic conditions. The results showed that cutting forces were higher for cryogenic machining but decreased with increasing rake angle. Cryogenic machining produced significantly lower surface roughness than ambient machining, especially at high rake angles and cutting speeds, due to increased material rigidity at lower temperatures.
PARAMETRIC STUDY OF THE EFFECT OF MACHINING PARAMETERS IN DRILLING USING TAGU...AM Publications
An attempt has been made into the role of conducting an experimental research on aluminium alloys by using the technique to find and correlate Taguchi technological factors for the economy of the machining process. The powerful statistical tool Taguchi method is a systematic application of design and analysis of experiments. It is an effective way to produce high quality at a relatively low cost method. Improving one parameter leads to degradation of other parameters and optimization of various parameters is much more complicated. Therefore, Taguchi technique is used to investigate the characteristic multiple performance in drilling operation. In this paper, the effect of the variation of machining parameters such as speed, power, depth of cut and radius nose in Al6063T6 has been studied and presented. First, the optimal arrangement of the four parameters of rotation has been determined using the configuration of the Taguchi L9 technique with a variation in three levels. After machining is completed, the values are documented and compared using statistical analysis software.
The Surface roughness prediction method using
artificial neural network (ANN) and Adaptive Neuro Fuzzy
Inference System (ANFIS) are developed to investigate the
effects of cutting conditions during turning of EN8 material.
The ANN model of surface roughness parameters (Ra) is
developed with the cutting conditions such as cutting speed,
feed rate and depth of cut as the affecting process
parameters.
The experiments are planned and totally 27 settings
with three levels defined for each of the factors in order to
develop the knowledge based system. The ANN training
method is used for back-propagation training algorithm
(BPTA) and also for training the Adaptive neuro fuzzy
inference system (ANFIS). We have compared the
Artificial Neural Network and Adaptive neuro fuzzy
inference systems.
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...IJERA Editor
Friction Stir Welding (FSW) is a promising solid state joining process widely used generally for Al alloys,
especially in aerospace, marine and automobile applications. In present work, the microstructure and corrosion
behavior of friction stir welded AA6101 T6 Al alloy is studied. The friction stir welding was carried using
vertical milling machine with different tool rotational speeds and welding speeds. The microstructure at weld
nugget or stir zone (SN), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal
were observed using optical microscopy. The corrosion tests of base alloy and welded joints were carried out in
3.5% NaCl solution at temperature of 30º C. Corrosion rate and emf were determined using cyclic polarization
measurement.
A refined energy-based model for friction stir processing of Al- Zn-Mg alloyIJERA Editor
Friction stir processing (FSP) is a promising solid state surface modification technique. Also, considered as an
innovative technique that the FSPwas employed to modify the surface layer of aluminium alloy. The FSP passes
of only two passes were applied on aluminium alloy samples. A rotating tool with a pin and shoulder is inserted
into a single piece of material and results in significant microstructural changes in the processed zone, due to
intense plastic deformation. It has been proved to be an effective way to refine the microstructure of aluminium
alloys, and thereby improve the mechanical properties. In procedural phenomenon there are different parameters
adjustment have been worked out to refine microstructure and several properties characterised to TEM, SEM,
FESEM and mechanical properties. In this study, a refined energy based model that estimates the energy
generated due to friction and plastic deformation is presented with the help ofexperimental and theoretical
results available in many literatures. The model is applied to 7xxx series of aluminium alloys.
IRJET- Cold Formed Steel Lipped Zed Section with and without Web Holes –Web C...IRJET Journal
1. The study investigated the web crippling behavior of cold-formed steel lipped zed sections with and without circular web holes through theoretical analysis, experimental testing, and finite element analysis using ANSYS.
2. Theoretical analysis was conducted based on IS 801-1975 and BS 5950-1998 design codes, experimental testing involved flexural testing of sections under uniformly distributed loading with and without web holes, and finite element models were developed to analyze web crippling behavior.
3. The results found that the ratio of the web hole depth to the web depth and the distance from the edge of the bearing divided by the flat depth of the web influenced web crippling. Theoretical values were higher than
Fatigue Performance in Grinding and Turning: An OverviewIJMER
This paper analysis the influence of Abrasive Flow Machining (AFM), Turning and Grinding on
fatigue performance of Fe250. Surface condition has a strong effect on fatigue life, and that most surfaces
produced by conventional manufacturing operations such as machining and forging have poor fatigue
behavior than polished surfaces commonly used for laboratory specimens. It is found that the surfaces
produced with different machining process and having the same surface roughness having different fatigue
performances. High –cycle fatigue data was obtained for Fe 250 using three types of machining process
viz, AFM, Turning and Grinding .S-N curve is plotted for the samples obtained with all the three process. It
was found that the samples produced with AFM having the highest fatigue life.
IRJET- Material Characterization on Functionally Graded AL-CU Alloy Fabricate...IRJET Journal
This document summarizes a study that characterized the material properties of an Al-Cu alloy fabricated using centrifugal casting at different rotational speeds. Specifically:
- An Al-Cu alloy was centrifugally cast at 400rpm, 600rpm, and 800rpm to produce functionally graded materials with varying properties along the radial direction.
- Testing found that hardness and tensile strength increased with rotational speed, with the 800rpm alloy exhibiting the finest grain structure and highest properties.
- Microstructures showed finer grains and higher hardness at the inner and outer surfaces due to more rapid solidification, with coarser grains and lower hardness in the middle.
Experimental Investigations of Friction Stir Welding (FSW) on Al 6061 : A Cas...IRJET Journal
This document summarizes an experimental study on friction stir welding (FSW) of aluminum alloy 6061. The study used a milling machine to conduct FSW trials with different tool pin profiles at various welding parameters. Initial trials failed due to tool breakage. Failure analysis found the main causes were tool material, rpm, and tool profile/vibrations. Modifying the tool to a tapered, threaded pin profile and increasing rpm to 1200 led to a successful weld with tensile strength of 66MPa, demonstrating FSW is possible on conventional machine tools. The study explored using FSW to join common aluminum alloys for applications like automotive and construction.
Determining the influence of cutting fluids on tool wear and surface roughnes...Lepuufu
Knowledge of the performance of cutting fluids in machining different work materials is
of critical importance in order to improve the efficiency of any machining process. The
efficiency can be evaluated based on certain process parameters such as flank wear, surface
roughness on the work piece, cutting forces developed, temperature developed at the tool
chip interface, etc. The objective of this work is to determine the influence of cutting fluids
on tool wear and surface roughness during turning of AISI 304 with carbide tool. Further
an attempt has been made to identify the influence of coconut oil in reducing the tool
wear and surface roughness during turning process. The performance of coconut oil is also
being compared with another two cutting fluids namely an emulsion and a neat cutting oil
(immiscible with water). The results indicated that in general, coconut oil performed better
than the other two cutting fluids in reducing the tool wear and improving the surface finish.
Coconut oil has been used as one of the cutting fluids in this work because of its thermal
and oxidative stability which is being comparable to other vegetable-based cutting fluids
used in the metal cutting industry.
Surface residual stresses in machined austenitic stainless steelLepuufu
Surface residual stresses due to turning operations in AISI 304 type stainless steel were studied as a function of machining speed, feed rate,
depth of cut, and tool geometry and coating. Residual stress tensors were determined using X-ray diffraction technique. The effects of turning
conditions and tool on the residual stresses were discussed in terms of mechanically and thermally induced non-homogeneous plastic
deformation of the surface layers of the workpiece.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Research into Properties of Spot Welded Steel Sheetsijtsrd
The contribution deals with parameter optimalization of resistance spot welding for hot dip zinc coated steel sheets. The mechanical properties and metallographic observation of welded joints on galvanized steel sheets were performed. Uncoated sheets from the same material were used for comparison of particular properties. The results showed that welding parameter optimalization is very important for welding of galvanized steel sheets. LuboÅ¡ KaÅ¡c¡k | Denis Cmorej "Research into Properties of Spot Welded Steel Sheets" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29773.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/29773/research-into-properties-of-spot-welded-steel-sheets/lubo%C5%A1-ka%C5%A1c%C3%A1k
Influence of tellurium addition on drilling of microalloyed steel (din 38mns6)Lepuufu
This study evaluated the influence of tellurium content and minimum quantity lubrication (MQL) flow rate on drilling performance when drilling microalloyed steel. Two grades of steel were tested, one with high tellurium content and one with low tellurium content. Drilling tests were conducted using two cutting speeds, two feed rates, two drill geometries, and two MQL flow rates. Statistical analysis showed that tellurium content most significantly impacted performance, doubling drill life for the high tellurium steel. MQL flow rate had the lowest influence, with a higher flow only reducing life 9%. Addition of tellurium improved machinability by reducing forces during chip formation.
Multi-Objective Optimization ( Surface Roughness & Material Removal Rate) of ...IJERA Editor
The present study applied Taguchi method through a case study in straight turning of AISI 202 stainless steel bar on CNC Machine ( Mfd by ACE DESIGNERS) using Titanium Carbide tool for the optimization of Material removal rate, Surface Roughness and tool wear process parameter.The study aimed at evaluating the best process environment which could simultaneously satisfy requirements of both quality as well as productivity with special emphasis on maximizing material removal rate and minimizing surface roughness and tool flank wear at various combination of cutting speed, feed, depth of cut. The predicted optimal setting ensured maximum MRR and minimum surface roughness and tool wear. Since optimum material removal rate is desired, so higher the better criteria of Taguchi signal to noise ratio is used for MRR – SNs = -10 log(Sy2/n) For surface roughness and tool wear – SNL = -10 log(S(1/y2)/n) The results have been verified with the help of S/N Ratios calculation and various graphs have been plotted to show the below mentioned observations.
a) MRR first increases with increase in cutting speed and then decreases.
b) With the increase in feed, MRR increases.
c) With the increase in depth of cut, MRR first increases and then decreases.
d) With the increase in cutting speed, Surface Roughness first decreases and then increases.
e) With the increase in feed, Surface Roughness increases.
f) With the increase in depth of cut, Surface Roughness first increases and then decreases.
Friction Stir Welding of Magnesium Alloys - A Reviewmsejjournal
The selection of proper material for each application is a critical part in every manufacturing industry.
In the field of aerospace and automobile the major requirement is light weight yet strong material which
can possess every aspect of design parameters. Magnesium alloy one of the major raw material used in
these industries due to its light weight, good thermal conductivity etc. Also Friction stir welding is the
joining process that is being used in these industries as it is a solid state joining process. This paper
gives a detailed review about Friction Stir welding of Mg alloys. The review period is considered from
2009 to 2015.A detailed review about Friction stir welding of Mg alloys has not been done before in this
manner. This review work may be a ready reference for subsequent researchers.
Effect of welding parameter on micro hardness of synergic mig welding ofIAEME Publication
This document summarizes a study on the effect of welding parameters on the microhardness of gas metal arc welds on 304L austenitic stainless steel. Bead-on-plate welds were produced using various gas flow rates, voltages, wire feed rates, and travel speeds. Knoop microhardness measurements were taken across the weld bead and base material. The maximum microhardness values were found in the heat-affected zone due to its finer grain size and higher pearlite content compared to the weld zone and base metal. Increasing the current and voltage resulted in a mixed spray and short circuiting metal transfer mode and improved weld bead appearance.
A REVIEW ON OPTIMIZATION OF RESISTANCE SPOT WELDING OF ALUMINUM COMPONENTS US...AM Publications
Resistance Spot welding (RSW) is one of the common welding processes used for sheet joining especially in the automobile and aerospace industry. It is used in a wide range of industries but notably for the assembly of sheet steel vehicle bodies. This is a type of resistance welding where the spot welds are made at regular intervals on overlapping sheets of metal. Spot welding is primarily used for joining parts that are normally up to 3 mm in thickness. The joint quality can be defined in terms of properties such as weld-bead geometry, mechanical properties and distortion.The objective of the research is to determine the optimum combination of parameters responsible for better quality of joints. The complicated behavior of the process must be analyzed to set the optimum parameters to get the optimum weld quality. The paper also presents the FEA simulation of the RSW process.
Effects and defects of the polypropylene plate for different parameters in fr...eSAT Journals
Abstract Polypropylene is one of the thermoplastic materials used in the lot of engineering applications such as marine, aerospace, automotive, toys and etc. Friction Stir Welding (FSW) is a solid-state method of used for joining metals. FSW process was successfully extended to join thermoplastic materials. In this paper an attempt has been made to understand the mechanism of friction stir welding joints of polypropylene plates. In this study, the role of FSW tool pin profile, rotational speed and welding speed are analyzed with respective to the quality of the joints. This research outlines the method of welding and optimization of FSW process parameters for polypropylene material by Taguchi optimization methodology. Experiments were performed at rotational speed of 1500, 1750, 2000 and 2250 rpm, Welding speeds of 30, 40, 50 and 60 mm/min, and tool pin profiles of Triangular, square, Threaded and taper pin profiles. The experiments are conducted in CNC vertical machining centre with special fixture. Microstructural characteristics were evaluated by using optical microscopy and hardness are observed in weld joints. The micro structure and Rockwell hardness of the welded region was created by threaded pin profile with welding speed of 40 and 50 mm/min and rotational speed of 2250 and 1500 rpm act as right friction stir welding parameters to avoid defects in joining of polypropylene materials. Index Terms: Polypropylene, Microstructure, Hardness, Pin profile, Speed, Feed, and Weld zone
The document reviews friction stir welding (FSW), a solid-state welding technique. It discusses FSW's advantages over fusion welding in avoiding issues like porosity and cracking. The document then summarizes several studies on FSW of titanium and other alloys, examining effects of parameters like rotational speed on microstructure and properties of the welds. It investigates FSW of titanium to steel and aluminum to titanium, describing interfacial structures formed under different welding conditions.
Review Paper on Friction Stir Welding and its Impact on EnvironmentIRJET Journal
This document reviews friction stir welding (FSW), a solid-state welding technique invented in 1991. FSW involves plunging a rotating tool with a shoulder and pin into aluminum or other metal workpieces to generate frictional heat and plasticize the metals, joining them below their melting points. Key benefits of FSW include high weld quality, low distortion, no shielding gas or filler wire needed, and it is more environmentally friendly than arc welding. Process parameters like tool geometry, rotation speed, and pressure influence the weld microstructure and properties. FSW has applications in industries like aerospace, automotive, and shipbuilding.
Regression analysis of shot peening process for performance characteristics o...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
Cutting force and surface roughness in cryogenic machining of elastomerIAEME Publication
This document summarizes research on cryogenic machining of elastomers. Experiments were conducted to analyze the effects of rake angle, cutting speed, and feed rate on cutting force and surface roughness under ambient and cryogenic conditions. The results showed that cutting forces were higher for cryogenic machining but decreased with increasing rake angle. Cryogenic machining produced significantly lower surface roughness than ambient machining, especially at high rake angles and cutting speeds, due to increased material rigidity at lower temperatures.
PARAMETRIC STUDY OF THE EFFECT OF MACHINING PARAMETERS IN DRILLING USING TAGU...AM Publications
An attempt has been made into the role of conducting an experimental research on aluminium alloys by using the technique to find and correlate Taguchi technological factors for the economy of the machining process. The powerful statistical tool Taguchi method is a systematic application of design and analysis of experiments. It is an effective way to produce high quality at a relatively low cost method. Improving one parameter leads to degradation of other parameters and optimization of various parameters is much more complicated. Therefore, Taguchi technique is used to investigate the characteristic multiple performance in drilling operation. In this paper, the effect of the variation of machining parameters such as speed, power, depth of cut and radius nose in Al6063T6 has been studied and presented. First, the optimal arrangement of the four parameters of rotation has been determined using the configuration of the Taguchi L9 technique with a variation in three levels. After machining is completed, the values are documented and compared using statistical analysis software.
The Surface roughness prediction method using
artificial neural network (ANN) and Adaptive Neuro Fuzzy
Inference System (ANFIS) are developed to investigate the
effects of cutting conditions during turning of EN8 material.
The ANN model of surface roughness parameters (Ra) is
developed with the cutting conditions such as cutting speed,
feed rate and depth of cut as the affecting process
parameters.
The experiments are planned and totally 27 settings
with three levels defined for each of the factors in order to
develop the knowledge based system. The ANN training
method is used for back-propagation training algorithm
(BPTA) and also for training the Adaptive neuro fuzzy
inference system (ANFIS). We have compared the
Artificial Neural Network and Adaptive neuro fuzzy
inference systems.
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...IJERA Editor
Friction Stir Welding (FSW) is a promising solid state joining process widely used generally for Al alloys,
especially in aerospace, marine and automobile applications. In present work, the microstructure and corrosion
behavior of friction stir welded AA6101 T6 Al alloy is studied. The friction stir welding was carried using
vertical milling machine with different tool rotational speeds and welding speeds. The microstructure at weld
nugget or stir zone (SN), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal
were observed using optical microscopy. The corrosion tests of base alloy and welded joints were carried out in
3.5% NaCl solution at temperature of 30º C. Corrosion rate and emf were determined using cyclic polarization
measurement.
A refined energy-based model for friction stir processing of Al- Zn-Mg alloyIJERA Editor
Friction stir processing (FSP) is a promising solid state surface modification technique. Also, considered as an
innovative technique that the FSPwas employed to modify the surface layer of aluminium alloy. The FSP passes
of only two passes were applied on aluminium alloy samples. A rotating tool with a pin and shoulder is inserted
into a single piece of material and results in significant microstructural changes in the processed zone, due to
intense plastic deformation. It has been proved to be an effective way to refine the microstructure of aluminium
alloys, and thereby improve the mechanical properties. In procedural phenomenon there are different parameters
adjustment have been worked out to refine microstructure and several properties characterised to TEM, SEM,
FESEM and mechanical properties. In this study, a refined energy based model that estimates the energy
generated due to friction and plastic deformation is presented with the help ofexperimental and theoretical
results available in many literatures. The model is applied to 7xxx series of aluminium alloys.
IRJET- Cold Formed Steel Lipped Zed Section with and without Web Holes –Web C...IRJET Journal
1. The study investigated the web crippling behavior of cold-formed steel lipped zed sections with and without circular web holes through theoretical analysis, experimental testing, and finite element analysis using ANSYS.
2. Theoretical analysis was conducted based on IS 801-1975 and BS 5950-1998 design codes, experimental testing involved flexural testing of sections under uniformly distributed loading with and without web holes, and finite element models were developed to analyze web crippling behavior.
3. The results found that the ratio of the web hole depth to the web depth and the distance from the edge of the bearing divided by the flat depth of the web influenced web crippling. Theoretical values were higher than
Fatigue Performance in Grinding and Turning: An OverviewIJMER
This paper analysis the influence of Abrasive Flow Machining (AFM), Turning and Grinding on
fatigue performance of Fe250. Surface condition has a strong effect on fatigue life, and that most surfaces
produced by conventional manufacturing operations such as machining and forging have poor fatigue
behavior than polished surfaces commonly used for laboratory specimens. It is found that the surfaces
produced with different machining process and having the same surface roughness having different fatigue
performances. High –cycle fatigue data was obtained for Fe 250 using three types of machining process
viz, AFM, Turning and Grinding .S-N curve is plotted for the samples obtained with all the three process. It
was found that the samples produced with AFM having the highest fatigue life.
IRJET- Material Characterization on Functionally Graded AL-CU Alloy Fabricate...IRJET Journal
This document summarizes a study that characterized the material properties of an Al-Cu alloy fabricated using centrifugal casting at different rotational speeds. Specifically:
- An Al-Cu alloy was centrifugally cast at 400rpm, 600rpm, and 800rpm to produce functionally graded materials with varying properties along the radial direction.
- Testing found that hardness and tensile strength increased with rotational speed, with the 800rpm alloy exhibiting the finest grain structure and highest properties.
- Microstructures showed finer grains and higher hardness at the inner and outer surfaces due to more rapid solidification, with coarser grains and lower hardness in the middle.
Experimental Investigations of Friction Stir Welding (FSW) on Al 6061 : A Cas...IRJET Journal
This document summarizes an experimental study on friction stir welding (FSW) of aluminum alloy 6061. The study used a milling machine to conduct FSW trials with different tool pin profiles at various welding parameters. Initial trials failed due to tool breakage. Failure analysis found the main causes were tool material, rpm, and tool profile/vibrations. Modifying the tool to a tapered, threaded pin profile and increasing rpm to 1200 led to a successful weld with tensile strength of 66MPa, demonstrating FSW is possible on conventional machine tools. The study explored using FSW to join common aluminum alloys for applications like automotive and construction.
Determining the influence of cutting fluids on tool wear and surface roughnes...Lepuufu
Knowledge of the performance of cutting fluids in machining different work materials is
of critical importance in order to improve the efficiency of any machining process. The
efficiency can be evaluated based on certain process parameters such as flank wear, surface
roughness on the work piece, cutting forces developed, temperature developed at the tool
chip interface, etc. The objective of this work is to determine the influence of cutting fluids
on tool wear and surface roughness during turning of AISI 304 with carbide tool. Further
an attempt has been made to identify the influence of coconut oil in reducing the tool
wear and surface roughness during turning process. The performance of coconut oil is also
being compared with another two cutting fluids namely an emulsion and a neat cutting oil
(immiscible with water). The results indicated that in general, coconut oil performed better
than the other two cutting fluids in reducing the tool wear and improving the surface finish.
Coconut oil has been used as one of the cutting fluids in this work because of its thermal
and oxidative stability which is being comparable to other vegetable-based cutting fluids
used in the metal cutting industry.
Surface residual stresses in machined austenitic stainless steelLepuufu
Surface residual stresses due to turning operations in AISI 304 type stainless steel were studied as a function of machining speed, feed rate,
depth of cut, and tool geometry and coating. Residual stress tensors were determined using X-ray diffraction technique. The effects of turning
conditions and tool on the residual stresses were discussed in terms of mechanically and thermally induced non-homogeneous plastic
deformation of the surface layers of the workpiece.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Research into Properties of Spot Welded Steel Sheetsijtsrd
The contribution deals with parameter optimalization of resistance spot welding for hot dip zinc coated steel sheets. The mechanical properties and metallographic observation of welded joints on galvanized steel sheets were performed. Uncoated sheets from the same material were used for comparison of particular properties. The results showed that welding parameter optimalization is very important for welding of galvanized steel sheets. LuboÅ¡ KaÅ¡c¡k | Denis Cmorej "Research into Properties of Spot Welded Steel Sheets" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29773.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/29773/research-into-properties-of-spot-welded-steel-sheets/lubo%C5%A1-ka%C5%A1c%C3%A1k
Influence of tellurium addition on drilling of microalloyed steel (din 38mns6)Lepuufu
This study evaluated the influence of tellurium content and minimum quantity lubrication (MQL) flow rate on drilling performance when drilling microalloyed steel. Two grades of steel were tested, one with high tellurium content and one with low tellurium content. Drilling tests were conducted using two cutting speeds, two feed rates, two drill geometries, and two MQL flow rates. Statistical analysis showed that tellurium content most significantly impacted performance, doubling drill life for the high tellurium steel. MQL flow rate had the lowest influence, with a higher flow only reducing life 9%. Addition of tellurium improved machinability by reducing forces during chip formation.
Multi-Objective Optimization ( Surface Roughness & Material Removal Rate) of ...IJERA Editor
The present study applied Taguchi method through a case study in straight turning of AISI 202 stainless steel bar on CNC Machine ( Mfd by ACE DESIGNERS) using Titanium Carbide tool for the optimization of Material removal rate, Surface Roughness and tool wear process parameter.The study aimed at evaluating the best process environment which could simultaneously satisfy requirements of both quality as well as productivity with special emphasis on maximizing material removal rate and minimizing surface roughness and tool flank wear at various combination of cutting speed, feed, depth of cut. The predicted optimal setting ensured maximum MRR and minimum surface roughness and tool wear. Since optimum material removal rate is desired, so higher the better criteria of Taguchi signal to noise ratio is used for MRR – SNs = -10 log(Sy2/n) For surface roughness and tool wear – SNL = -10 log(S(1/y2)/n) The results have been verified with the help of S/N Ratios calculation and various graphs have been plotted to show the below mentioned observations.
a) MRR first increases with increase in cutting speed and then decreases.
b) With the increase in feed, MRR increases.
c) With the increase in depth of cut, MRR first increases and then decreases.
d) With the increase in cutting speed, Surface Roughness first decreases and then increases.
e) With the increase in feed, Surface Roughness increases.
f) With the increase in depth of cut, Surface Roughness first increases and then decreases.
Friction Stir Welding of Magnesium Alloys - A Reviewmsejjournal
The selection of proper material for each application is a critical part in every manufacturing industry.
In the field of aerospace and automobile the major requirement is light weight yet strong material which
can possess every aspect of design parameters. Magnesium alloy one of the major raw material used in
these industries due to its light weight, good thermal conductivity etc. Also Friction stir welding is the
joining process that is being used in these industries as it is a solid state joining process. This paper
gives a detailed review about Friction Stir welding of Mg alloys. The review period is considered from
2009 to 2015.A detailed review about Friction stir welding of Mg alloys has not been done before in this
manner. This review work may be a ready reference for subsequent researchers.
Effect of welding parameter on micro hardness of synergic mig welding ofIAEME Publication
This document summarizes a study on the effect of welding parameters on the microhardness of gas metal arc welds on 304L austenitic stainless steel. Bead-on-plate welds were produced using various gas flow rates, voltages, wire feed rates, and travel speeds. Knoop microhardness measurements were taken across the weld bead and base material. The maximum microhardness values were found in the heat-affected zone due to its finer grain size and higher pearlite content compared to the weld zone and base metal. Increasing the current and voltage resulted in a mixed spray and short circuiting metal transfer mode and improved weld bead appearance.
A REVIEW ON OPTIMIZATION OF RESISTANCE SPOT WELDING OF ALUMINUM COMPONENTS US...AM Publications
Resistance Spot welding (RSW) is one of the common welding processes used for sheet joining especially in the automobile and aerospace industry. It is used in a wide range of industries but notably for the assembly of sheet steel vehicle bodies. This is a type of resistance welding where the spot welds are made at regular intervals on overlapping sheets of metal. Spot welding is primarily used for joining parts that are normally up to 3 mm in thickness. The joint quality can be defined in terms of properties such as weld-bead geometry, mechanical properties and distortion.The objective of the research is to determine the optimum combination of parameters responsible for better quality of joints. The complicated behavior of the process must be analyzed to set the optimum parameters to get the optimum weld quality. The paper also presents the FEA simulation of the RSW process.
Effects and defects of the polypropylene plate for different parameters in fr...eSAT Journals
Abstract Polypropylene is one of the thermoplastic materials used in the lot of engineering applications such as marine, aerospace, automotive, toys and etc. Friction Stir Welding (FSW) is a solid-state method of used for joining metals. FSW process was successfully extended to join thermoplastic materials. In this paper an attempt has been made to understand the mechanism of friction stir welding joints of polypropylene plates. In this study, the role of FSW tool pin profile, rotational speed and welding speed are analyzed with respective to the quality of the joints. This research outlines the method of welding and optimization of FSW process parameters for polypropylene material by Taguchi optimization methodology. Experiments were performed at rotational speed of 1500, 1750, 2000 and 2250 rpm, Welding speeds of 30, 40, 50 and 60 mm/min, and tool pin profiles of Triangular, square, Threaded and taper pin profiles. The experiments are conducted in CNC vertical machining centre with special fixture. Microstructural characteristics were evaluated by using optical microscopy and hardness are observed in weld joints. The micro structure and Rockwell hardness of the welded region was created by threaded pin profile with welding speed of 40 and 50 mm/min and rotational speed of 2250 and 1500 rpm act as right friction stir welding parameters to avoid defects in joining of polypropylene materials. Index Terms: Polypropylene, Microstructure, Hardness, Pin profile, Speed, Feed, and Weld zone
SURFACE LAYER ALTERATIONS IN AISI 4140 STEEL FROM TURN-ASSISTED DEEP COLD ROL...IAEME Publication
Mechanical surface enhancement (MSE) techniques have been used to modify the surface reliability properties
of many materials by generating ultrafine or even nanometer-sized grains in the surface and subsurface region. These fine
grained materials created by mechanical surface enhancement techniques usually have higher hardness and frequently exhibit enhanced mechanical properties. Turn-assisted deep cold rolling (TADCR) process is used to improve the surface integrity of AISI 4140 steel which is commonly used in automobile industry.
Investigation on Mechanical Properties of AL6061 Alloy Processed by FSWijtsrd
The aim of this experiment was to improve the mechanical properties of 6061 aluminium alloys by friction stir processing FSP , a solid-state technique for micro structural modification using the heat from a friction and stirring. The Aluminium alloy 6061 is widely used in the fabrication of lightweight structures with high strength-to-weight ratio and good corrosion resistance. Welding is main fabrication method of 6061 alloy for manufacturing various engineering components. Friction stir welding FSW is a recently developed solid state welding process to overcome the problems encountered in fusion welding. This process uses a non-consumable tool to generate frictional heat on the abutting surfaces. The welding parameters, such as tool pin profile, rotational speed, welding speed and axial force, play major role in determining the micro structure and corrosion resistance of welded joint. In this work a central composite design with two different speeds, traverse speeds and Four tools has been used to minimize the experimental conditions. B. S. Bharadwaj | N. Phani Raja Rao "Investigation on Mechanical Properties of AL6061 Alloy Processed by FSW" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018, URL: http://www.ijtsrd.com/papers/ijtsrd18802.pdf
An Experimental Investigation on Mechanical Properties of Friction Stir Weldi...IRJET Journal
The document presents an experimental investigation on the mechanical properties of friction stir welding of aluminum alloy 6061-T6 and brass IS319 using EN19 tools with circular and taper profiles. Friction stir welding is a solid-state joining process that generates heat through friction between the rotating tool and workpieces.
The experiment was conducted on a milling machine using EN19 tools with circular and taper profiles to weld aluminum and brass plates. The welded joints were tested for tensile strength, yield strength, and hardness. The taper profile tool achieved a tensile strength of 108.5 N/mm2, yield strength of 76.05 N/mm2, and Vickers hardness of 51.73 HV. The circular
Surface layer alterations in aisi 4140 steel from turn assisted deep cold rol...IAEME Publication
This document summarizes a study on using turn-assisted deep cold rolling (TADCR) to improve the surface integrity of AISI 4140 steel. TADCR was performed using tungsten carbide balls of varying diameters at different rolling forces and numbers of passes. Microhardness measurements found that TADCR increased hardness in the surface layer by about 36% compared to the bulk material. Microstructure analysis found alteration to a depth of around 300μm, reflecting an increase in residual compressive stress from the initial turned state. Overall, the results indicate that TADCR is an effective method for modifying the surface properties of AISI 4140 steel.
Experimental Investigations on Tribiological Properties of 6061-T6 Al Alloy b...IJAEMSJORNAL
Microstructure and tribological properties of Al-TiB2 nano surface composite fabricated by Friction Stir Processing (FSP) were evaluated. To vary the percentage of TiB2 three different slot thickness viz. 1mm, 1.5 mm and 2mm were considered. Microstructural evaluations showed a nearly uniform distribution of TiB2 in the aluminium matrix after FSP with the addition of composite powder. Microhardness test results shoes FSW of Al6061-T6 alloy with 2mm groove width has more hardness. tribological properties were evaluated at two different sliding velocities 0.314m/s and 0.48m/s and results shows that at lower loads there is no much difference in wear rate of surface composite made with different slot sizes but with increase in load and sliding velocity wear rate was increased , however, larger slot Al6061-TiB2 Surface composites show better wear resistance.
The document summarizes research into the effect of different tool pin profiles on the mechanical properties of friction stir processed 6063 aluminium. It finds that aluminium samples processed with a pentagonal pin profile exhibited the best impact strength and hardness compared to circular, square, and threaded pin profiles. Microstructural analysis showed the pentagonal profile produced the finest grain structure without cracks in the processed zone, contributing to enhanced mechanical properties. Overall, the study demonstrates that tool pin profile selection is an important parameter for optimizing the mechanical response of friction stir processed aluminium alloys.
Study of Thermal Stresses in High Temperature Brazing of Carbide to Steel San...AM Publications
1. The document discusses the challenges in joining carbides to steel, specifically thermal stresses generated due to differences in thermal expansion coefficients.
2. It proposes using a "sandwich alloy" with copper between carbide and steel materials to act as a cushion and minimize stresses on the carbide during brazing and cooling.
3. Finite element modeling shows that this sandwich design with copper significantly reduces thermal stresses on the carbide compared to using silver-copper filler alloy directly.
Experimental Analysis to Optimize the Process Parameter of Friction Stir Weld...IRJET Journal
This document presents an experimental analysis to optimize the process parameters of friction stir welding (FSW) for aluminum alloy AA6082. The researchers conducted FSW experiments using different combinations of tool rotation speed, tilt angle, and welding speed. Tensile strength results of the welded joints were analyzed using Taguchi methods and particle swarm optimization to determine the optimal parameter settings. Specifically, a central composite design was used with three factors at three levels each to evaluate the effects of the FSW parameters on tensile strength. The goal of the research was to develop relationships between FSW variables and tensile/yield strength and identify the best settings for maximizing strength in single and multi-pass welds of AA6082 aluminum alloy.
Investigation of Metal Removal Rate and Surface Finish on Inconel 718 by Abra...AM Publications
Abrasive Waterjet (AWJ) cutting has proven to be an effective technology for material processing with the distinct advantages of no thermal distortion, high machining versatility, high flexibility and small cutting forces. In this paper, Taguchi robust design analysis is employed to determine optimal combination of process parameters. The Analysis of Variance (ANOVA) is also applied to identify the most significant factor. The process parameters such as pressure, transverse speed, stand of distance and abrasive flow rate are optimized to investigate their influence on Metal Removal Rate (MRR) and Surface Roughness (Ra) of Inconel. Experiments are carried out by L9 orthogonal array and the results are provided to verify this approach and credible tendencies of output parameters with respect to the input parameters are discussed, from which recommendations are made for process control and optimization.
PARAMETERS OF FRICTION STIR PROCESSING ALONG WITH REINFORCEMENT OF COMPOSITIO...Journal For Research
This document summarizes a study on friction stir processing of an aluminium and tungsten carbide composite. The researchers varied the tool shoulder diameter between 16-20 mm while keeping other parameters constant. They found that a shoulder diameter of 18 mm produced the finest grain size and maximum tensile strength and microhardness. Smaller and larger diameters produced less heat, resulting in coarser grains and poorer properties. Microstructure analysis showed more uniform reinforcement particle dispersion with an 18 mm diameter tool.
Experimental Investigation of the Wear Behaviour of Excavator Bucket Teeth by...ijtsrd
An excavator bucket is a connecting part for heavy equipment machinery which is designed and manufactured to be used for work in site excavation, mining and construction sites. Wear associated failure of machinery components number as one of the chief reasons for unproductive working of machines in a diversity of engineering applications. Associated with wear resistant applications in the field, in the last decade hardfacing become an issue of extreme development. Hardfacing is the method of welding consumable electrode having high wear resistance on the bucket teeth. Using DC arc welding process layers of hardfaced material is deposited on the bare bucket teeth. Field trail was conducted for 10 hours in the field. Weight measurement was done before installing bucket teeth on JCB and after the field trail. The difference in weight is analyzed to measure the wear rate of hardfacing material i.e. HAB 90 and bare tooth. Micro hardness of the cross section cutted from the hardfaced samples and un hardened sample was also studied using Brinell Hardness Testing Machine. Scanning Electron Microscopy was done to analyze the morphology of the surfaces of hardened and un hardened surfaces of samples. Ashish Sharma | Sandeep Kumar "Experimental Investigation of the Wear Behaviour of Excavator Bucket Teeth by Hardfacing Technique" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29368.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/29368/experimental-investigation-of-the-wear-behaviour-of-excavator-bucket-teeth-by-hardfacing-technique/ashish-sharma
A Review Paper- Influence Of Welding On The Mechanical Properties Of Mild Ste...IJSRED
This paper reviews the influence of welding on the mechanical properties of mild steel and EN31 butt welds at different groove angles. It discusses how the welding process uses heat to join materials and can change the mechanical properties near the heat-affected zone. It explores how factors like welding current, groove angle, and plate thickness can affect properties like hardness, impact strength, tensile strength, and compressive strength. The paper concludes that these mechanical properties may vary with plate thickness and groove angle for mild steel, EN8, and EN31 materials.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Journals
Abstract Friction Stir Welding (FSW) is a solid state welding process. In particular, it can be used to join high-strength aerospace magnesium and other metallic alloys that are hard to weld by conventional fusion welding. It was performed on 4 mm thickness AZ91 Magnesium alloy. Magnesium alloy have more advantage than aluminum such as light weight, softer, tendency to bend easily, cost effective in terms of energy requirements so magnesium alloy has selected in this FSW technique. In friction stir welding (FSW), a momentous residual stress is present in weld due to complex nature of fixturing system compared to fusion welding. These residual stresses can affect properties of welded components during service. Therefore, for estimating magnitude of welding residual stresses and their nature of distribution along with thermal history, a three dimensional non- linear thermo-mechanical finite element (NLTMFE) model using ABAQUS/ CAE package was developed for butt welded magnesium alloy AZ91. The objective of this work is to predict the temperature distribution in both materials and evaluate the mechanical properties during the friction stir welding on magnesium alloy. Keywords: Fsw, Nltmfe, Abaqus, Cae, Az91.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Publishing House
This document describes a numerical simulation of friction stir butt welding for AZ91 magnesium alloy. A 3D nonlinear thermo-mechanical finite element model was developed using ABAQUS to predict temperature distribution and evaluate mechanical properties during the welding process. The model considers heat generation due to friction between the rotating tool and workpiece. Results show the maximum temperature reached was 483°C and residual stress was highest along the weld path. Pressure was also highest in the weld midpoint. Graphs of internal energy and strain energy over time were produced from the simulation results.
Effect of process parameters using friction stir processing /welding of steel...Husain Mehdi
Microstructural changes and flow of material have be comprehensively studied by many researchers. A lot of studies have been conducted by changing the process parameters such as axial load, feed, speed of the tool, tool geometry, tool tilt angle etc. to find the optimum process parameters. Friction stir welding can be applied on various materials such as aluminum, manganese, copper. Till date majority of the research and development was done on aluminum alloys. This is so because Al alloys are easy to deform at relatively low temperatures (approximately below 550 Celsius). Also, they are easier to weld as compared to other materials. But these days a lot of studies are being conducted on carrying out friction stir processing on steel. This process improves mechanical properties like tensile strength, ductility, micro-hardness etc.
This document summarizes a study that investigated the mechanical and metallurgical properties of friction stir welded AA1100 aluminum alloy joints. Different welding parameters were tested, including tool rotation speed (800-1400 rpm) and material positioning (advancing vs. retreating side). Microhardness, tensile, and fracture surface tests were used to evaluate the mechanical properties. Optical and SEM microscopy were used to analyze the microstructural evolution. The goal was to understand how processing parameters affect properties and defect development in similar AA1100 alloy joints.
IRJET-Analysis and Optimization of Cutting Parameters in Turning using Tic -...IRJET Journal
This document analyzes and optimizes cutting parameters in turning chrome-moly alloy steel using TiC-coated carbide inserts. Twenty-seven experiments were conducted using a L27 orthogonal design to evaluate the effects of cutting speed, feed rate, and depth of cut on surface roughness, power consumption, chip reduction coefficient, and tool wear. The results show that feed rate and depth of cut significantly affect surface roughness, while cutting speed, depth of cut, and feed rate influence power consumption and tool wear. Optimizing these cutting parameters can improve the machining performance and surface quality when hard turning chrome-moly alloy steel.
ANALYSIS OF TOOL WEAR IN TURNING OPERATION OF ALUMINIUMIRJET Journal
The document analyzes tool wear during aluminum turning operations using high-speed steel tools. Experiments were conducted varying cutting speed, feed rate, and depth of cut to collect tool wear and cutting force data. The results were analyzed to determine optimal cutting parameters that minimize tool wear and maximize tool life when machining aluminum. Specifically, the study aimed to identify the cutting speed, feed, and depth of cut combination that causes the least tool wear, as well as determine the maximum and minimum tool wear levels at different cutting speeds. The results provide insights into improving tool performance and efficiency during aluminum machining.
Similar to DRY TURNING OF AUSTENITIC STAINLESS STEEL (316L) USING CVD COATED TOOL (20)
DEVELOPMENT OF TODDLER FAMILY CADRE TRAINING BASED ON ANDROID APPLICATIONS IN...AM Publications
Toddler family cadre is a community members work voluntarily in fostering and providing information to parents of toddlers about how to properly care for children. Toddler Family cadre desperately need training to increase their skills. There are still a few Toddler family cadres who get training so that the knowledge and skills of parents and other family members in developing toddlers' growth through physical stimulation, motoric intelligence, emotional and social economy as well as possible are still lacking. The purpose of this study is to develop an Android- assisted Toddler family cadre training model in Demak. This research is research in tian research and development. The research location was in Demak Regency. Toddler family cadres became the object of this research. Development of Toddler family cadre training models assisted by Android in Demak is feasible to be used as an effort to improve Toddler Family cadres' capabilities.
TESTING OF COMPOSITE ON DROP-WEIGHT IMPACT TESTING AND DAMAGE IDENTIFICATION ...AM Publications
In recent years the use of composite materials in structural components has become increasingly common in a wide range of engineering applications. Composite materials offer numerous advantages over more conventional materials because of their superior specific properties, but a serious obstacle to a more widespread use of these materials is their high sensitivity to localized impact loading. This paper presents an experimental study to assess the impact response of drop weight impact tests on fiber reinforced polymer composites with deferent load and damage identification of composite using Non-destructive testing techniques ultrasonic testing (UT) C scan. In the study includes checking the strength of the specimen, plotting of graphs between the height and the impact energy obtained and tabulating the results after conducting the various functional tests.
THE USE OF FRACTAL GEOMETRY IN TILING MOTIF DESIGNAM Publications
In this paper I will present the use of fractal geometry to design tile motifs. A fractal is a geometric figure that combines the several characteristics among others: its parts have the same form as the whole, fragmented, and formation by iteration. The concept of fractals has been spread over all fields of sciences, technology, and art. This paper aims to provide an algorithm to creating motifs of tile algorithm for create the tile motif consists of base, iteration, coloration and duplication. In order to help the reader better understand the algorithm, I will present some script using Matlab. We describe a mathematically based algorithm that can fill a spatial region with sequence of randomly placed which may be transformed copies of one motif or several motifs. By using this algorithm, I can produce thousand variety of aesthetically pleasing tile motifs, of which we show a number of examples.
TWO-DIMENSIONAL INVERSION FINITE ELEMENT MODELING OF MAGNETOTELLURIC DATA: CA...AM Publications
Two-dimensional resistivity analysis of magnetotelluric data has been done at “Z” geothermal area which is located in southern part of Indonesia. The objective is to understand subsurface structure beneath reasearch area based on 2-D modeling of magnetotelluric data. The inversion finite element method were used for numerical simulations which requires discretization on the boundary of the modeling domain. The modeling results of magnetotelluric data shows relativity structure dissemination: 0-10 ohm.m in a thickness of 1 km (Clay Cap), 10-100 ohm.m with 1-2 km depth respectively (reservoir zone), and on a scale of 100-1000 ohm.m in a depth of 2-3 km (heat source zone). The result of relativity structure can be used to delineate an area with geothermal prospect around 12 km2.
USING THE GENETIC ALGORITHM TO OPTIMIZE LASER WELDING PARAMETERS FOR MARTENSI...AM Publications
This document presents an optimization of laser welding parameters for martensitic stainless steel using a genetic algorithm. The algorithm aims to minimize the difference between the actual and desired weld size (width and depth) by optimizing laser power, welding speed, and fiber diameter. The genetic algorithm was run 10 times with a population of 30 over 200 iterations each time. The results showed errors between optimized and experimental values of less than 5% for the parameters. The study demonstrates that genetic algorithms can effectively optimize laser welding parameters to achieve a preset weld size.
ANALYSIS AND DESIGN E-MARKETPLACE FOR MICRO, SMALL AND MEDIUM ENTERPRISESAM Publications
The Ministry of Cooperatives and Small and Medium Enterprises launched in 2018 the number of Micro, Small and Medium Enterprises (MSMEs) in Indonesia as many as 58.97 million people. It is predicted that the number of MSMEs players in 2019 will amount to 59.2 million. This shows that the Indonesian people have made changes in the field of family economics which initially as consumptive are now productive. The community prefers to carry out activities that can increase family income. Future MSMEs remain the mainstay of the national economy. In accordance with the government roadmap, in 2020 e-commerce transactions are predicted to reach Rp1,300 trillion or equivalent to USD130 billion. According to data from the Central Statistics Agency (BPS), the contribution of MSMEs to Indonesia's Gross Domestic Product (GDP) reached 61.41%, with the number of MSMEs reaching almost 60 million units. However, only around 8% or 3.79 million of the 59.2 million MSMEs players have used online platforms to market their products. Based on the above problems, researchers conducted research on the analysis and display of E-Marketplace for MSMEs in Indonesia. The type of research used is action research. The object of research is MSMEs which are under the Office of Industry and Trade of Sragen Regency. The method of data collection is by techniques: (1) interview, (2) documentation (3) observation, (4) literature study. The researcher uses the waterfall method in developing the system. The research team has successfully analyzed the E-Market place according to the results of data collection. The research team has succeeded in designing the E-Marketplace for MSMEs. E-Marketplace designed can be used by admin, MSME and user. Admin is in charge of managing E-Marketplace and has full access rights. MSMEs can register online and manage their products in E-Marketplace. Users or buyers can search data in E-Marketplace as desired. To make transactions, users can interact directly with MSMEs according to the data provided in E-Marketplace. E-Marketplace can be used for marketing together MSMEs products. This e-marketplace can be accessed at www.umkmonline.com
REMOTE SENSING AND GEOGRAPHIC INFORMATION SYSTEMS AM Publications
Remote sensing technology's increasing accessibility helps us observe research and learn about our globe in ways we could only imagine a generation ago. Guides to profound knowledge of historical, conceptual and practical uses of remote sensing which is increasing GIS technology. This paper will go briefly through remote sensing benefits, history, technology and the GIS and remote sensing integration and their applications. Remote sensing (RS) is used in mapping the predicted and actual species and dominates the ecosystem canopy.
EVALUATE THE STRAIN ENERGY ERROR FOR THE LASER WELD BY THE H-REFINEMENT OF TH...AM Publications
Currently, the finite element method (FEM) is still one of the useful tools in numerical simulation for technical problems. With this method, a continuum model presented by a certain number of elements with a simple approximation field causes the presence of discretization error in solutions. This paper considers the butt weld by laser which subjected the tension for AISI 1018 steel highness 8 mm. The aim of the study is to use the h-refinement of the FEM in estimation the strain energy error for the laser weld mentioned. The results show that the stability of the h-refinement shown by the value of the relative error of the strain energy is quite small, specifically; FEM is less than 5.7% and extra is no more than 3.7%.
HMM APPLICATION IN ISOLATED WORD SPEECH RECOGNITIONAM Publications
Speech recognition is always being an all-time trendy topic for discussion and also for researches and we see a major application in our life. This paper provides the work done on the application of Hidden Markov model to implement isolated word speech recognition on MATLAB and to develop and train the system for set of self-selective words for specific user (user dependent) to get maximum efficiency in word recognition system. Which uses the forward and Baum-welch algorithm and fitting Gaussian of the Baum-welch algorithm for all the iteration perform. We use a sample of 7 alphabets which are recorded in 15 different ways giving total of 105 word to use for training with each word with 15 variations. This system can be used in real world in system security using voice security system and mainly for children and impaired people.
PEDESTRIAN DETECTION IN LOW RESOLUTION VIDEOS USING A MULTI-FRAME HOG-BASED D...AM Publications
Detecting pedestrians in low resolution videos is a challenging task, due to the small size of pedestrians in the images and the limited information. In practical outdoor surveillance scenarios the pedestrian size is usually small. Existing state-of-the-art pedestrian detection methods that use histogram of oriented gradient (HOG) features have poor performance in this problem domain. To compensate for the lack of information in a single frame, we propose a novel detection method that recognizes pedestrians in a short sequence of frames. Namely, we take the single-frame HOG-based detector and extend it to multiple frames. Our detector is applied to regions containing potential moving objects. In the case of video taken from a moving camera on an aerial platform, video stabilization is first performed to register the frames. A classifier is then applied to features extracted from spatio-temporal volumes surrounding the potential moving objects. On challenging stationary and aerial video datasets, our detection accuracy outperforms several state-of-the-art algorithms.
The aim of this paper is to help the blind people to identify and catch the public transport vehicles with the help of Light Fidelity technology. It is a Navigation aid. When the bus arrives at the bus stand, transmitter in the bus transmits the light signals and receiver in the stick, receives the light signals and a sound signal is generated through the speaker present in the stick. The sound message contains the bus number and the destination of the bus. In addition to this, if the person is absconded or lost, details of the location will be sent to his/her family members by pressing a button. This is made possible with the help of Global System for Mobile (GSM). Finally, presence of water can be detected along the blind person’s path, with the help of water sensors.
EFFECT OF SILICON - RUBBER (SR) SHEETS AS AN ALTERNATIVE FILTER ON HIGH AND L...AM Publications
A digital radiography delivers a radiation dose to patients; therefore it poses potential risk to the patients. One effort to reduce dose is carried out using a radiation filter, e.g. Silicone Rubber (SR) sheet. The purpose of this research was to determine the impact of the SR sheet on the high contrast objects (HCO) and the low contrast objects (LCO). The dose reduction was determined from attenuation x-rays before and after using the SR sheet. Assessment of HCO and LCO was observed from CDR TOR phantom at tube voltage of 48 kVp and tube current of 8 mAs. The physical parameter to assess image quality was the Signal to Noise Ratio (SNR) value in LCO. The maximum x-ray attenuation using the SR sheet is 48.82%. The visibility of the HCO remains the same, namely 16 objects; however the LCO slighly decreases from 14 objects to 13 objects after using the SR sheet. The SNR value decreases with an average value of 15.17%.Therefore, the SR sheet as a alternative filter has no effect on the HCO and has realtively little effect on the LCO. Thus, the SR sheet potentially is used for radiation protection in patients, especially on examinations that do not require low contrast resolution.
UTILIZATION OF IMMUNIZATION SERVICES AMONG CHILDREN UNDER FIVE YEARS OF AGE I...AM Publications
Immunization is the key strategy to curb communicable diseases which are the number one killer of children under five. Immunization prevents mortalities of approximating three million children under five annually. This study aimed to assess utilization of immunization services among children under five of age in Kirinyaga County, Kenya.
REPRESENTATION OF THE BLOCK DATA ENCRYPTION ALGORITHM IN AN ANALYTICAL FORM F...AM Publications
The article presents the study of cryptographic transformations of the Kuznyechik algorithm in relation to differential analysis and the translation of their representations into a more convenient form for cryptanalysis. A simplification of the type of transformations of the algorithm to algebraic the form, in which cryptanalysis software will be more effective. Since the description of the algorithm in the analytical form allows for 16 cycles of execution of the shift register with linear feedback, each of which will be carried out 16 operations of multiplication and 15 operations of addition, reduced to 16 multiplying and 15 the operations of addition. The result is an algebraic form of a linear transformation (from a shift register with linear feedback to the multiplication of the matrix in a finite field). In the future, the algebraic type of transformation can be used to effectively carry out differential cryptanalysis.
Optical character recognition (OCR) is process of classification of optical patterns contained in a digital image. The process of OCR Recognition involves several steps including pre-processing, segmentation, feature extraction, classification. Pre-processing is for done the basic operation on input image like noise reduction which remove the noisy signal from image. Segmentation stage for segment the given image into line by line and segment each character from segmented line. Future extraction calculates the characteristics of character. A Radial Basis Function Neural Network (RBFNN) is used to classification contains the database and does the comparison.
Surveillance refers to the task of observing a scene, often for lengthy periods in search of particular objects or particular behaviour. This task has many applications, foremost among them is security (monitoring for undesirable behaviour such as theft or vandalism), but increasing numbers of others in areas such as agriculture also exist. Historically, closed circuit TV (CCTV) surveillance has been mundane and labour Intensive, involving personnel scanning multiple screens, but the advent of reasonably priced fast hardware means that automatic surveillance is becoming a realistic task to attempt in real time. Several attempts at this are underway.
SIMULATION OF ATMOSPHERIC POLLUTANTS DISPERSION IN AN URBAN ENVIRONMENTAM Publications
Interest in air pollution investigation of urban environment due to existence of industrial and commercial activities along with vehicular emission and existence of buildings and streets which setup natural barrier for pollutant dispersion in the urban environment has increased. The air pollution modelling is a multidisciplinary subject when the entire cities are taken under consideration where urban planning and geometries are complex which needs a large software packages to be developed like Operational Street Pollution Model (OSPM), California Line Source model (CALINE series) etc. On overviewing various works it can be summarized that the air pollutant dispersion in urban street canyons and all linked phenomenon such as wind flow, pollutant concentrations, temperature distribution etc. generally depend on wind speed and direction, building heights and density, road width, source and intensity of air pollution, meteorological variables like temperature, humidity etc. A unique and surprising case is observed every time on numerous combinations of these factors. The main aim of this study is to simulate the atmospheric pollutant dispersion for given pollutant like carbon monoxide, sulphur dioxide and nitrogen dioxide and given atmospheric conditions like wind speed and direction. Computational Fluid Dynamics (CFD) simulation for analysing the atmospheric pollutant dispersion is done after natural airflow analysis. Volume rendering is done for variables such as phase 2 volume fraction and velocity with resolution as 250 pixels per inch and transparency as 20%. It can be observed that all the three pollutant namely nitrogen dioxide, sulphur dioxide and carbon monoxide the phase 2 volume fraction changes from 0 to 1. The wind velocity changes from 3.395×10-13 m/s to 1.692×102 m/s. The dispersion of pollutants follow the sequence Sulphur dioxide>Carbon monoxide>Nitrogen dioxide.
PREPARATION AND EVALUATION OF WOOL KERATIN BASED CHITOSAN NANOFIBERS FOR AIR ...AM Publications
In this article, we have extracted keratin from deccani wool waste and prepared the wool keratin based Chitosan nanofibers by electrospinning technique. The prepared nanofibers mat were prepared with different weight percent ratio like 1wt.%, 3wt.% and 5wt.% with respect to polymer i.e Chitosan. The physicochemical and filtration properties of wool keratin based Chitosan nanofibers were studied. Wool keratin based Chitosan nanofibers were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning electron microscopy (FESEM). The filtration efficiency of keratin Chitosan nanofibers were investigated through DOP test and heavy metal removal capacity of evaluated through Atomic absorption spectroscopy. FTIR results were showed that Keratin gets compatible with Chitosan. XRD patterns revealed keratin was in crystalline nature and increase the crystalline nature of Chitosan nanofibers. FESEM images showed that uniform nanofibers generation with average fiber diameter 80nm. Nanofibers filtration efficiency against a particulate matter in air was obtained more than 99.53% and excellent property of removal of heavy metal.
ANALYSIS ON LOAD BALANCING ALGORITHMS IMPLEMENTATION ON CLOUD COMPUTING ENVIR...AM Publications
Cloud computing means storing and accessing data and programs over the Internet instead of your computer's hard drive. The cloud is just a metaphor for the Internet. The elements involved in cloud computing are clients, data center and distributed server. One of the main problems in cloud computing is load balancing. Balancing the load means to distribute the workload among several nodes evenly so that no single node will be overloaded. Load can be of any type that is it can be CPU load, memory capacity or network load. In this paper we presented an architecture of load balancing and algorithm which will further improve the load balancing problem by minimizing the response time. In this paper, we have proposed the enhanced version of existing regulated load balancing approach for cloud computing by comping the Randomization and greedy load balancing algorithm. To check the performance of proposed approach, we have used the cloud analyst simulator (Cloud Analyst). Through simulation analysis, it has been found that proposed improved version of regulated load balancing approach has shown better performance in terms of cost, response time and data processing time.
A MODEL BASED APPROACH FOR IMPLEMENTING WLAN SECURITY AM Publications
This paper presents various security features and configurations commonly implemented in WLANs and their aggregated security levels and then proposes a model that enables implementation and evaluation of WLAN security
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELijaia
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
Build the Next Generation of Apps with the Einstein 1 Platform.
Rejoignez Philippe Ozil pour une session de workshops qui vous guidera à travers les détails de la plateforme Einstein 1, l'importance des données pour la création d'applications d'intelligence artificielle et les différents outils et technologies que Salesforce propose pour vous apporter tous les bénéfices de l'IA.
AI for Legal Research with applications, toolsmahaffeycheryld
AI applications in legal research include rapid document analysis, case law review, and statute interpretation. AI-powered tools can sift through vast legal databases to find relevant precedents and citations, enhancing research accuracy and speed. They assist in legal writing by drafting and proofreading documents. Predictive analytics help foresee case outcomes based on historical data, aiding in strategic decision-making. AI also automates routine tasks like contract review and due diligence, freeing up lawyers to focus on complex legal issues. These applications make legal research more efficient, cost-effective, and accessible.
Design and optimization of ion propulsion dronebjmsejournal
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...PIMR BHOPAL
Variable frequency drive .A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply. VFDs are widely used in industrial applications for motor control, providing significant energy savings and precise motor operation.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network