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.
Deformation behavior of consecutive workpieces and Stable -Unstable Flow in Materials Processed in equal channel angular pressing and grain refinement.
Grain refinement, which is obtained by changing the size of grain structure by different techniques, is a preferred method to improve simultaneously the strength and plasticity of metallic materials.
The presentation involves "Principles of Equal-channel Angular Pressing as a processing tool for grain refinement", its applications and advantages in the field of technology and research.
A Review of Severe Plastic DeformationIRJESJOURNAL
ABSTRACT: This article reviews about Ultrafine grained (UFG) materials processed by Severe Plastic
Deformation. From the period of 1950’s, the researchers made a fountain stone for this technique. Over the last
decades, this SPD technique experienced an enormous growth among the research field. There was a
development of different methods of SPD, production of various materials by SPD with improved and
interesting results based on our requirement. Moreover, different post processing techniques will also help to
enhance the property of the SPD processed material. This paper reviews the overall development of this
technique, various methods of SPD, discussed about the enhancement of the properties and finally concluded
with some specific challenges and issues faced by the modern researchers. It may be helpful to those who wants
specialise in bulk nanomaterials produced by SPD.
Deformation behavior of consecutive workpieces and Stable -Unstable Flow in Materials Processed in equal channel angular pressing and grain refinement.
Grain refinement, which is obtained by changing the size of grain structure by different techniques, is a preferred method to improve simultaneously the strength and plasticity of metallic materials.
The presentation involves "Principles of Equal-channel Angular Pressing as a processing tool for grain refinement", its applications and advantages in the field of technology and research.
A Review of Severe Plastic DeformationIRJESJOURNAL
ABSTRACT: This article reviews about Ultrafine grained (UFG) materials processed by Severe Plastic
Deformation. From the period of 1950’s, the researchers made a fountain stone for this technique. Over the last
decades, this SPD technique experienced an enormous growth among the research field. There was a
development of different methods of SPD, production of various materials by SPD with improved and
interesting results based on our requirement. Moreover, different post processing techniques will also help to
enhance the property of the SPD processed material. This paper reviews the overall development of this
technique, various methods of SPD, discussed about the enhancement of the properties and finally concluded
with some specific challenges and issues faced by the modern researchers. It may be helpful to those who wants
specialise in bulk nanomaterials produced by SPD.
Design of Equal Channel Angular Extrusion For Grain Refinement Pratik Saxena
Equal Channel Angular Extrusion Grain refinement by severe deformation and FEA of ECAE deformation was carried out using Hyper mesh, Abaqus for optimization of Billet.
Tasks Performed
Effect of friction on Strain
Effect of die angle on Strain
Effect of Fillet radius on Strain
Effect of Thickness on Strain
Microstructural Analysis of the Influence of Ecap on the Pure Nb Rolling PlaneIJERA Editor
Starting From a sample of pure and pre-deformed niobium by cold rolling a severe plastic deformation process was performed using ECAP (equal channel angular pressing) in order to verify the evolution and distibution of the deformation structures and of hardness in the lamination plane of the material. To make the analysis were used: the Scanning Electron Microscope-SEM, optical microscope and a hardness map to have a better view of how homogeneous or heterogeneous a process is in relation to the other. After comparison it was seen that the process through ecap uniformized the microstructure and hardness of the material.
Knowledge and Experience of Menopause - A Rural Based Study in Aligarhjournal ijrtem
ABSTRACT: The menopause is a transitional phase in women’s life.The level of oestrogen is decreased ,because of which a variety of symptoms such as hot flushes, mucosal dryness, excessive sweating, emotional fluctuations, psychoses, decr-eased strength and calcification of bones occurs. Attitudes, perception and expectations are part of the psychosocial phenomenon surrounding menopause. Natural menopause is diagnosed after 12 months of amenorrhoea not associated with a pathological cause. Menopause is a gradual process that lasts for about 2 years, called climacteric. It is normal and should not be taken as a disease or syndrome. The aim of this study was to find out the knowledge and experience of menopausal symptoms among women who had attained menopause
Uniform particle distribution by a newer method in composite metal of Al/SiCIOSR Journals
Abstract: Preparation of composites of metal with ceramic particle reinforced through the casting process
is not uniform because of poor wet ability. The major difficulty is to get a uniform distribution of
reinforcement especially in higher volume fractions. An innovative method of producing cast composites is
tried in present study to overcome this problem we need homogeneity of matrix. The method involves multi
axis rotation of liquid aluminum and silicon carbide particulates packed in a steel pipe inside a rotating drum.
Up to 65 % volume of the metal (aluminum)is incorporated by SIC by this technique. Physical Properties
like hardness, micro hardness, densities and microstructures have been studied. The distribution of
particles as well the mechanical properties are better as compared to that of stir cast composites with similar
volume fraction of silicon carbide reinforcement. The composite with 65-volume percentage of silicon carbide
of particulates showed a Rockwell Hardness value of 67Rb.In few locations the microstructure showed a
non-uniform distribution which can be neglected . There were segregation of silicon carbide particles at a
particular location and the hardness obtained there was much higher. The particle distribution is a result
of the combined influence of random mixing of particles and liquid aluminum and the solidification pattern
obtained.
Key word: Multi axis rotation, microstructure, MMC, Al- SIC matrix
The Effect of Direct- and Cross-Rolling on Mechanical Properties and Microstr...Kaveh Rahimi Mamaghani
Severely deformed commercial pure aluminum sheets by constrained groove pressing are direct and crossrolled.
The grain size evolution and dislocation density during rolling are studied using Williamson-Hall
analysis on x-ray diffraction patterns of the deformed samples. These results and optical microscopy
observations show that subsequent direct or cross-rolling of constrained groove pressed aluminum can
produce elongated fine grains. The minimum crystallite size is achieved after cross-rolling of constrained
groove pressed samples. By direct-rolling or cross-rolling of annealed sheet, the maximum intensity in x-ray
diffraction patterns remains on (200) like annealed aluminum but direct-rolling or cross-rolling of constrained
groove pressed sheets changes the maximum intensity from (111) for constrained groove pressed
sheets to (220). Also, mechanical properties are studied using tensile test and hardness measurement. The
results show that cross-rolling on constrained groove pressed samples is more effective than direct-rolling in
mechanical properties improvement.
Correlation between the Interface Width and the Adhesion Strength of Copper F...IOSRJAP
The present study has been conducted in order to determine the influence of negative bias voltage applied to substrate on adhesion of copper films deposited on carbon steel substrates. The adhesion strength has been evaluated by the scratch test. Coatings were deposited by a DC magnetron sputtering system. The substrates were firstly mechanically polished and then ion-etched by argon ions prior to deposition. Adhesion was found to increase with the bias voltage. The critical load had a value of 9.5 g for an unbiased substrate and reached 18.5 g for a bias voltage of 600 V. Equally important, the interface width, measured using Auger electron spectroscopy, increased as a function of the bias voltage. The width of the interface is related to the time of ion milling in the Auger spectrometer. The size of this width is obtained from the Auger elemental depth profiles through measuring the depth of the interface coating/substrate. The width had a value of 335 min with a bias of 600 V whereas it didn't exceed 180 min when the substrate was unbiased. Therefore, the effect of the bias voltage was to expand the interface because of the diffusion phenomenon and physical mixing of materials at the interface. Moreover, the critical load increased with the increase of the interface width.
Characterization of environmental impact indices of solid wastes in Surulere...IJMER
Life Cycle Assessment (LCA) is currently being used in several countries to evaluate
treatment options for specific waste fractions. The application of GaBi5 (Holistic Balancing)
modeling tool is currently apt for the impact assessment of environmental pollution indices arising
from wastes. This study focuses on the characterization of environmental impact indices of solid
wastes in Suurulere, one of the Local Government Area (LGA)s in Nigeria using GaBi5.
Waste classification was carried out in the selected houses of the LGA. Tool for the Reduction and
Assessment of Chemical and other Environmental Impacts (TRACI) and the Centre of
Environmental Science, University of Leiden, Netherlands (CML) methods of LCA inventory
assessment were employed in the study. One kg of municipal solid waste of this area was selected
as the functional unit. The Scenario considered in this study with its system boundaries is
Landfilling. It consists of three main steps: Collection, Transportation and Landfilling. GaBi5
modeling tool was used to obtain background data for the life cycle inventory and to analyse the
wastes completely. Four (4) environmental impact indices evaluated are: Global Warming
Potential (GWP), Acidification Potential (AP), Eutrophication Potential (EP) and Ozone Depletion
Potential (ODP).
Result of the Scenario’s Environmental Impacts shows that the GWP is characterized in the order:
Biodegradable > Textile > Wood > Paper > plastic > Metal > Glass. The AP followed similar
trend except for paper that is greater than wood wastes. EP has this trend; Metal > Wood > Glass
> Biodegradable > Paper > Textile while for ODP it was Textile > Plastic > Paper > Metal >
Wood > Biodegradable > Glass. The study also showed that when LCA is applied in conjunction
with the waste hierarchy, it can be a useful tool for the planning of municipal waste management
plans as it allows municipalities to directly compare the actual environmental impacts of different
technologies and planning options. Furthermore, through system expansion, a consequential
approach to LCA may encourage municipalities to integrate waste management with processes in
other sectors. The GaBi software of LCA solves the problem of imprecision involved in solid waste
decision making. The study concludes that the wastes all have detrimental impacts on the 4
measured categories but the highest pollution threat is on the Global Warming Potential. It is
recommended that Environmental Protection Agencies at all levels should always analyze and
contain the pollution impacts of the solid wastes on the environment
Online Bus Arrival Time Prediction Using Hybrid Neural Network and Kalman fil...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.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Design of Equal Channel Angular Extrusion For Grain Refinement Pratik Saxena
Equal Channel Angular Extrusion Grain refinement by severe deformation and FEA of ECAE deformation was carried out using Hyper mesh, Abaqus for optimization of Billet.
Tasks Performed
Effect of friction on Strain
Effect of die angle on Strain
Effect of Fillet radius on Strain
Effect of Thickness on Strain
Microstructural Analysis of the Influence of Ecap on the Pure Nb Rolling PlaneIJERA Editor
Starting From a sample of pure and pre-deformed niobium by cold rolling a severe plastic deformation process was performed using ECAP (equal channel angular pressing) in order to verify the evolution and distibution of the deformation structures and of hardness in the lamination plane of the material. To make the analysis were used: the Scanning Electron Microscope-SEM, optical microscope and a hardness map to have a better view of how homogeneous or heterogeneous a process is in relation to the other. After comparison it was seen that the process through ecap uniformized the microstructure and hardness of the material.
Knowledge and Experience of Menopause - A Rural Based Study in Aligarhjournal ijrtem
ABSTRACT: The menopause is a transitional phase in women’s life.The level of oestrogen is decreased ,because of which a variety of symptoms such as hot flushes, mucosal dryness, excessive sweating, emotional fluctuations, psychoses, decr-eased strength and calcification of bones occurs. Attitudes, perception and expectations are part of the psychosocial phenomenon surrounding menopause. Natural menopause is diagnosed after 12 months of amenorrhoea not associated with a pathological cause. Menopause is a gradual process that lasts for about 2 years, called climacteric. It is normal and should not be taken as a disease or syndrome. The aim of this study was to find out the knowledge and experience of menopausal symptoms among women who had attained menopause
Uniform particle distribution by a newer method in composite metal of Al/SiCIOSR Journals
Abstract: Preparation of composites of metal with ceramic particle reinforced through the casting process
is not uniform because of poor wet ability. The major difficulty is to get a uniform distribution of
reinforcement especially in higher volume fractions. An innovative method of producing cast composites is
tried in present study to overcome this problem we need homogeneity of matrix. The method involves multi
axis rotation of liquid aluminum and silicon carbide particulates packed in a steel pipe inside a rotating drum.
Up to 65 % volume of the metal (aluminum)is incorporated by SIC by this technique. Physical Properties
like hardness, micro hardness, densities and microstructures have been studied. The distribution of
particles as well the mechanical properties are better as compared to that of stir cast composites with similar
volume fraction of silicon carbide reinforcement. The composite with 65-volume percentage of silicon carbide
of particulates showed a Rockwell Hardness value of 67Rb.In few locations the microstructure showed a
non-uniform distribution which can be neglected . There were segregation of silicon carbide particles at a
particular location and the hardness obtained there was much higher. The particle distribution is a result
of the combined influence of random mixing of particles and liquid aluminum and the solidification pattern
obtained.
Key word: Multi axis rotation, microstructure, MMC, Al- SIC matrix
The Effect of Direct- and Cross-Rolling on Mechanical Properties and Microstr...Kaveh Rahimi Mamaghani
Severely deformed commercial pure aluminum sheets by constrained groove pressing are direct and crossrolled.
The grain size evolution and dislocation density during rolling are studied using Williamson-Hall
analysis on x-ray diffraction patterns of the deformed samples. These results and optical microscopy
observations show that subsequent direct or cross-rolling of constrained groove pressed aluminum can
produce elongated fine grains. The minimum crystallite size is achieved after cross-rolling of constrained
groove pressed samples. By direct-rolling or cross-rolling of annealed sheet, the maximum intensity in x-ray
diffraction patterns remains on (200) like annealed aluminum but direct-rolling or cross-rolling of constrained
groove pressed sheets changes the maximum intensity from (111) for constrained groove pressed
sheets to (220). Also, mechanical properties are studied using tensile test and hardness measurement. The
results show that cross-rolling on constrained groove pressed samples is more effective than direct-rolling in
mechanical properties improvement.
Correlation between the Interface Width and the Adhesion Strength of Copper F...IOSRJAP
The present study has been conducted in order to determine the influence of negative bias voltage applied to substrate on adhesion of copper films deposited on carbon steel substrates. The adhesion strength has been evaluated by the scratch test. Coatings were deposited by a DC magnetron sputtering system. The substrates were firstly mechanically polished and then ion-etched by argon ions prior to deposition. Adhesion was found to increase with the bias voltage. The critical load had a value of 9.5 g for an unbiased substrate and reached 18.5 g for a bias voltage of 600 V. Equally important, the interface width, measured using Auger electron spectroscopy, increased as a function of the bias voltage. The width of the interface is related to the time of ion milling in the Auger spectrometer. The size of this width is obtained from the Auger elemental depth profiles through measuring the depth of the interface coating/substrate. The width had a value of 335 min with a bias of 600 V whereas it didn't exceed 180 min when the substrate was unbiased. Therefore, the effect of the bias voltage was to expand the interface because of the diffusion phenomenon and physical mixing of materials at the interface. Moreover, the critical load increased with the increase of the interface width.
Characterization of environmental impact indices of solid wastes in Surulere...IJMER
Life Cycle Assessment (LCA) is currently being used in several countries to evaluate
treatment options for specific waste fractions. The application of GaBi5 (Holistic Balancing)
modeling tool is currently apt for the impact assessment of environmental pollution indices arising
from wastes. This study focuses on the characterization of environmental impact indices of solid
wastes in Suurulere, one of the Local Government Area (LGA)s in Nigeria using GaBi5.
Waste classification was carried out in the selected houses of the LGA. Tool for the Reduction and
Assessment of Chemical and other Environmental Impacts (TRACI) and the Centre of
Environmental Science, University of Leiden, Netherlands (CML) methods of LCA inventory
assessment were employed in the study. One kg of municipal solid waste of this area was selected
as the functional unit. The Scenario considered in this study with its system boundaries is
Landfilling. It consists of three main steps: Collection, Transportation and Landfilling. GaBi5
modeling tool was used to obtain background data for the life cycle inventory and to analyse the
wastes completely. Four (4) environmental impact indices evaluated are: Global Warming
Potential (GWP), Acidification Potential (AP), Eutrophication Potential (EP) and Ozone Depletion
Potential (ODP).
Result of the Scenario’s Environmental Impacts shows that the GWP is characterized in the order:
Biodegradable > Textile > Wood > Paper > plastic > Metal > Glass. The AP followed similar
trend except for paper that is greater than wood wastes. EP has this trend; Metal > Wood > Glass
> Biodegradable > Paper > Textile while for ODP it was Textile > Plastic > Paper > Metal >
Wood > Biodegradable > Glass. The study also showed that when LCA is applied in conjunction
with the waste hierarchy, it can be a useful tool for the planning of municipal waste management
plans as it allows municipalities to directly compare the actual environmental impacts of different
technologies and planning options. Furthermore, through system expansion, a consequential
approach to LCA may encourage municipalities to integrate waste management with processes in
other sectors. The GaBi software of LCA solves the problem of imprecision involved in solid waste
decision making. The study concludes that the wastes all have detrimental impacts on the 4
measured categories but the highest pollution threat is on the Global Warming Potential. It is
recommended that Environmental Protection Agencies at all levels should always analyze and
contain the pollution impacts of the solid wastes on the environment
Online Bus Arrival Time Prediction Using Hybrid Neural Network and Kalman fil...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.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
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.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
A Special Type Of Differential Polynomial And Its Comparative Growth PropertiesIJMER
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.
A Novel Multi- Viewpoint based Similarity Measure for Document ClusteringIJMER
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.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
We shall state and prove a characterization for the Bloch space and obtain analogous characterization for the little Bloch space of analytic functions on the unit disk in the complex plane. We shall also state and prove three containment results related to Bloch space and Little Bloch space
Review of Intrusion and Anomaly Detection Techniques IJMER
Intrusion detection is the act of detecting actions that attempt to compromise the
confidentiality, integrity or availability of a resource. With the tremendous growth of network-based
services and sensitive information on networks, network security is getting more and more importance
than ever. Intrusion poses a serious security threat in a huge network environment. The increasing use of
internet has dramatically added to the growing number of threats that inhabit within it. Intrusion
detection does not, in general, include prevention of intrusions. Now a days Network intrusion detection
systems have become a standard component in the area of security infrastructure. This review paper tries
to discusses various techniques which are already being used for intrusion detection.
A Threshold Fuzzy Entropy Based Feature Selection: Comparative StudyIJMER
Feature selection is one of the most common and critical tasks in database classification. It
reduces the computational cost by removing insignificant and unwanted features. Consequently, this
makes the diagnosis process accurate and comprehensible. This paper presents the measurement of
feature relevance based on fuzzy entropy, tested with Radial Basis Classifier (RBF) network,
Bagging(Bootstrap Aggregating), Boosting and stacking for various fields of datasets. Twenty
benchmarked datasets which are available in UCI Machine Learning Repository and KDD have been
used for this work. The accuracy obtained from these classification process shows that the proposed
method is capable of producing good and accurate results with fewer features than the original
datasets.
Mechanism of Fracture in Friction Stir Processed Aluminium AlloyDr. Amarjeet Singh
Aluminium alloys are used for important
applications in reducing the weight of the component and
structure particularly associated with transport, marine,
and aerospace fields. Grain refinement by scandium (Sc)
addition can eliminate the casting defects and increase the
resistance to hot tearing for high strength aluminium alloys.
FSP for cast aluminium alloys have been focused and it has
great advantages including solid state microstructural
evolution, altering mechanical properties by optimizing
process parameters. These parameters are tool rotational
speeds (720, and 1000 rpm), traverse speeds (80, and 70
mm/min), and axial compressive force at 15 kN, etc. The
mechanical properties had been evaluated on FSPed
aluminium alloy with different microstructural conditions.
Fracture properties of aluminium alloys are very important
for industrial applications. Tensile and fracture toughness
properties were correlated to microstructural and
fractographic features of the aluminium alloys need to
explore their essential failure mechanisms.
A New Surface Modification Technique and Their Characterisation: Friction Sti...IJERA Editor
Since aluminium alloy is a well-known light alloys to use in aerospace and automotive industries. Therefore, a
new method, so far little known in metal forming industries, is the friction stir processing of surface layers.
Friction stir processing (FSP) is an emerging surface engineering solid-state technology which provides the
ability to thermomechnically process selective locations on the materials surface and to enhance specific
properties to some considerable depth. However, from a practical point of view it is important to determine the
impact of FSP conditions, therefore, a tool rotation speed, travel rate, pressure force as well as the shape and
type of tool on the moment acting to heat generated in the stirring area. The heat generated in the area being
processed and the level of plastic strain are factors having a decisive effect on microstructural changes, and,
consequently, on the mechanical and functional properties of newly formed areas. In this phenomena that the
main FSP features have been investigated through OM (optical microscopy), SEM (scanning electron
microscopy), FESEM (field emission scanning electron microscopy), TEM (transmission electron microscopy)
and mechanical properties. Moreover, aluminium alloy being an age-hardening response to evaluated through
Vicker’s hardness measurement a typical characterisation at present task. The research of the FSP of surface
layers, so far has been focused mainly on the metallurgical analysis of microstructural changes in modified
aluminium alloys.
Electrospun Nanofibers Reinforced Aluminium Matrix Composites, A Trial to Imp...IJAMSE Journal
A comparison between TiO2 nanofibers and carbon nanofibers as fibers reinforced metal matrix composites with respect to mechanical properties improvements have been made in this paper. Al and Mg have been chosen as metal matrices. The used carbon and ceramic nanofibers (Titanium Oxide) were successfully synthesized using electrospinning technique. Various weight percentage of calcined
electrospun TiO2 and carbon nanofibers (1, 3, 5 and 10%) were mixed with metal matrix and fabricated by route of powder metallurgy using High Frequency Induction heat Sintering (HFIHS). Mechanical properties of the sintered composites have been investigated. The manufactured pellets were tested for compression test, hardness and microstructures by the field emission scanning electron microscopes (FESEM), which reveals the homogeneous distribution of nanofibers in the Al/Mg matrices. In addition,
energy-dispersive X-ray spectroscopy (EDS) was employed to obtain the chemical analysis of each composite. The result shows that, the ultimate compressive strength increased to 415 MPa at 5% TiO2, which is 13.5% more than the pure Al. The hardness increased up to 64% in case of using the ceramic nanofibers as reinforcement. While using CNFs as reinforcement to the Al matrix deteriorates the
mechanical properties.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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.
Study on hardening mechanisms in aluminium alloysIJERA Editor
The Al-Zn-Mg alloys are most commonly used age-hardenable aluminium alloys. The hardening mechanism is
further enhanced in addition of Sc. Sc additions to aluminium alloys are more promising. Due to the
heterogeneous distribution of nano-sized Al3Sc precipitates hardening effect can be accelerated. Mainly,
highlight on hardening mechanism in Al-Zn-Mg alloys with Sc effect is to study. In addition, several
characterisations have been done to age-hardening measurements at elevated temperatures from 120oC to 180
oC. The ageing kinetics has also been calculated from Arrhenius equation. Furthermore, friction stir processing
(FSP) can be introduced to surface modification process and hardened the cast aluminium alloys. In this study,
hardening mechanism can be evaluated by Vicker’s hardness measurement and mechanical testing is present
task.
Study on hardening mechanisms in aluminium alloysIJERA Editor
The Al-Zn-Mg alloys are most commonly used age-hardenable aluminium alloys. The hardening mechanism is
further enhanced in addition of Sc. Sc additions to aluminium alloys are more promising. Due to the
heterogeneous distribution of nano-sized Al3Sc precipitates hardening effect can be accelerated. Mainly,
highlight on hardening mechanism in Al-Zn-Mg alloys with Sc effect is to study. In addition, several
characterisations have been done to age-hardening measurements at elevated temperatures from 120oC to 180
oC. The ageing kinetics has also been calculated from Arrhenius equation. Furthermore, friction stir processing
(FSP) can be introduced to surface modification process and hardened the cast aluminium alloys. In this study,
hardening mechanism can be evaluated by Vicker’s hardness measurement and mechanical testing is present
task.
The effect of Deep cryogenic treatment (DCT) on the metallurgical and mechani...Dr.M BALA THEJA
The effect of Deep cryogenic treatment (DCT) on the metallurgical and mechanical properties of Aluminium 6061-T6 is investigated in the present work
The test castings were solutionized at 525°C for 08 hrs and water quenched to room temperature. One set of samples were subjected to cryogenic treatment at -196°C in Cryo- treatment unit, while the other set is subjected to age hardening at 160°C for durations of 3 hrs, 5hrs and 7hrs. Again cryogenic treated specimens were subjected to age hardening at 165°C for durations of 3hrs, 5 hrs and 7hrs. All the samples were taken for Mechanical properties evaluation.
The total duration of the Cryogenic treatment cycle was 36 hrs, which includes 3hrs of cooling from room temperature to -196°C, 24hrs of holding and 09 hrs of warming to room temperature. The Cryogenic treatment was carried out in a specially designed Cryogenic unit
Dry Sliding Wear Behaviour of Rheocat Al-5.7Si-2Cu-0.3Mg AlloyDr. Manal Abdullatif
In this study, the effect of improved microstructure of Al-5.7Si-2Cu-0.3Mg alloys by using semisolid process on hardness and dry sliding wear behaviour were investigated. The microstructures of conventional cast alloy were totally dendritic, while in rheocasting the dendrit-ic transfer to fine globular microstructures after using cooling slope casting. Tribological tests were carried out by using a pin-on-disc apparatus in dry sliding conditions. Wear tests were at low sliding speed 1ms-1 ,applied load at 50N and three different sliding distance (i.e., 1.8Km, 5.4Km and 9Km) respectively. An optical microscope and a scanning electron microscope were used to examine the micro-structure and to understand the wear mechanism on the worn surface of both samples. The results showed that, the wear resistance of rheocast alloy was improved and higher than that those produce by conventional casting. The volume loss of rheocast alloy show reduc-tion more than 18% at 1.8Km and 10% at 9Km compared to as-cast alloy. Moderate wear regimes were appeared in both alloys, accord-ing to the range of wear rate. The friction coefficient had increased due to increase in the contact point between pin and disc materials. The dominant wear mechanism for conventional and rheocasting alloys was adhesion wear and abrasive wear respectively.
STRUCTURE PROPERTY CORRELATION OF MODIFIED Al-Mg ALLOYS FOR AEROSPACE APPLICA...sivanagaraju chittelu
Making a new metal for Aerospace applications which is made of many components .Major metals are Aluminium and Magnesium.Checking its structures and properties .
Study on Processing and Mechanical Properties of nano SiCp reinforced AA7075theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
The International Journal of Engineering & Science would take much care in making your article published without much delay with your kind cooperation
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
AN APPROACH FOR ENERGY CONSERVATION ON PARTIALLY LATERISED KHONDALITE ROCKS U...IAEME Publication
Partially Lateritised Khondalite (PLK) rocks are the bauxite mining waste materials generated during mining and dumped at the mining site, create environmental pollution. These waste
rocks can be utilized as filler materials for different industrial applications after grinding to suitable mesh size. Thermal shock treatment on ore is used for grain boundary breakage and size reduction,due to thermal shock treatment the surface adsorbed gangue minerals also releases and expose new
surface area in the ore. Comminution study is used after this treatment for further reduction in size.
Partially Lateritised Khondalite (PLK) rocks are the bauxite mining waste materials
generated during mining and dumped at the mining site, create environmental pollution. These waste
rocks can be utilized as filler materials for different industrial applications after grinding to suitable
mesh size. Thermal shock treatment on ore is used for grain boundary breakage and size reduction,
due to thermal shock treatment the surface adsorbed gangue minerals also releases and expose new
surface area in the ore. Comminution study is used after this treatment for further reduction in size.
In comminution study, ball mill has good selective grinding performance. This paper deals with the
effect of thermal shock treatment on grinding characteristics of PLK rock and the overall energy
savings achieved. Alumina based filler/ceramic materials were used in different industries. Thermal
shock of the samples was evaluated using water quench test. Surface deterioration level of samples
was monitored by image analysis before and after quenching. A total energy saving of the order of
52.8 % could be achieved when a sample preheated at 1123 K for 60 minutes followed by coldwater
quenching and grinding.
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.
Similar to Improving Mechanical Properties of AL 7075 alloy by Equal Channel Angular Extrusion process (20)
A Study on Translucent Concrete Product and Its Properties by Using Optical F...IJMER
- Translucent concrete is a concrete based material with light-transferring properties,
obtained due to embedded light optical elements like Optical fibers used in concrete. Light is conducted
through the concrete from one end to the other. This results into a certain light pattern on the other
surface, depending on the fiber structure. Optical fibers transmit light so effectively that there is
virtually no loss of light conducted through the fibers. This paper deals with the modeling of such
translucent or transparent concrete blocks and panel and their usage and also the advantages it brings
in the field. The main purpose is to use sunlight as a light source to reduce the power consumption of
illumination and to use the optical fiber to sense the stress of structures and also use this concrete as an
architectural purpose of the building
Developing Cost Effective Automation for Cotton Seed DelintingIJMER
A low cost automation system for removal of lint from cottonseed is to be designed and
developed. The setup consists of stainless steel drum with stirrer in which cottonseeds having lint is mixed
with concentrated sulphuric acid. So lint will get burn. This lint free cottonseed treated with lime water to
neutralize acidic nature. After water washing this cottonseeds are used for agriculter purpose
Study & Testing Of Bio-Composite Material Based On Munja FibreIJMER
The incorporation of natural fibres such as munja fiber composites has gained
increasing applications both in many areas of Engineering and Technology. The aim of this study is to
evaluate mechanical properties such as flexural and tensile properties of reinforced epoxy composites.
This is mainly due to their applicable benefits as they are light weight and offer low cost compared to
synthetic fibre composites. Munja fibres recently have been a substitute material in many weight-critical
applications in areas such as aerospace, automotive and other high demanding industrial sectors. In
this study, natural munja fibre composites and munja/fibreglass hybrid composites were fabricated by a
combination of hand lay-up and cold-press methods. A new variety in munja fibre is the present work
the main aim of the work is to extract the neat fibre and is characterized for its flexural characteristics.
The composites are fabricated by reinforcing untreated and treated fibre and are tested for their
mechanical, properties strictly as per ASTM procedures.
Hybrid Engine (Stirling Engine + IC Engine + Electric Motor)IJMER
Hybrid engine is a combination of Stirling engine, IC engine and Electric motor. All these 3 are
connected together to a single shaft. The power source of the Stirling engine will be a Solar Panel. The aim of
this is to run the automobile using a Hybrid engine
Fabrication & Characterization of Bio Composite Materials Based On Sunnhemp F...IJMER
The present day technology demands eco-friendly developments. In this era the
composite material are playing a vital roal in different field of Engineering .The composite materials
are using as a principle materials. Nowaday the composite materials are utilizing as a important
component of engineering field .Where as the importance of the applications of composites is well
known, but thrust on the use of natural fibres in it for reinforcement has been given priority for some
times. But changing from synthetic fibres to natural fibres provides only half green-composites. A
partial green composite will be achieved if the matrix component is also eco-friendly. Keeping this in
view, a detailed literature surveyed has been carried out through various issues of the Journals
related to this field. The material systems used are sunnhemp fibres. Some epoxy and hardener has
been also added for stability and drying of the bio-composites. Various graphs and bar-charts are
super-imposed on each other for comparison among themselves and Graphs is plotted on MAT LAB
and ORIGIN 6.0 software. To determining tensile strengths, Various properties for different biocomposites
have been compared among themselves. Comparison of the behaviour of bio-composites of
this work has been also compare with other works. The bio-composites developed in this work are
likely to get applications in fall ceilings, partitions, bio-degradable packagings, automotive interiors,
sports things (e.g. rackets, nets, etc.), toys etc.
Geochemistry and Genesis of Kammatturu Iron Ores of Devagiri Formation, Sandu...IJMER
The Greenstone belts of Karnataka are enriched in BIFs in Dharwar craton, where Iron
formations are confined to the basin shelf, clearly separated from the deeper-water iron formation that
accumulated at the basin margin and flanking the marine basin. Geochemical data procured in terms of
major, trace and REE are plotted in various diagrams to interpret the genesis of BIFs. Al2O3, Fe2O3 (T),
TiO2, CaO, and SiO2 abundances and ratios show a wide variation. Ni, Co, Zr, Sc, V, Rb, Sr, U, Th,
ΣREE, La, Ce and Eu anomalies and their binary relationships indicate that wherever the terrigenous
component has increased, the concentration of elements of felsic such as Zr and Hf has gone up. Elevated
concentrations of Ni, Co and Sc are contributed by chlorite and other components characteristic of basic
volcanic debris. The data suggest that these formations were generated by chemical and clastic
sedimentary processes on a shallow shelf. During transgression, chemical precipitation took place at the
sediment-water interface, whereas at the time of regression. Iron ore formed with sedimentary structures
and textures in Kammatturu area, in a setting where the water column was oxygenated.
Experimental Investigation on Characteristic Study of the Carbon Steel C45 in...IJMER
In this paper, the mechanical characteristics of C45 medium carbon steel are investigated
under various working conditions. The main characteristic to be studied on this paper is impact toughness
of the material with different configurations and the experiment were carried out on charpy impact testing
equipment. This study reveals the ability of the material to absorb energy up to failure for various
specimen configurations under different heat treated conditions and the corresponding results were
compared with the analysis outcome
Non linear analysis of Robot Gun Support Structure using Equivalent Dynamic A...IJMER
Robot guns are being increasingly employed in automotive manufacturing to replace
risky jobs and also to increase productivity. Using a single robot for a single operation proves to be
expensive. Hence for cost optimization, multiple guns are mounted on a single robot and multiple
operations are performed. Robot Gun structure is an efficient way in which multiple welds can be done
simultaneously. However mounting several weld guns on a single structure induces a variety of
dynamic loads, especially during movement of the robot arm as it maneuvers to reach the weld
locations. The primary idea employed in this paper, is to model those dynamic loads as equivalent G
force loads in FEA. This approach will be on the conservative side, and will be saving time and
subsequently cost efficient. The approach of the paper is towards creating a standard operating
procedure when it comes to analysis of such structures, with emphasis on deploying various technical
aspects of FEA such as Non Linear Geometry, Multipoint Constraint Contact Algorithm, Multizone
meshing .
Static Analysis of Go-Kart Chassis by Analytical and Solid Works SimulationIJMER
This paper aims to do modelling, simulation and performing the static analysis of a go
kart chassis consisting of Circular beams. Modelling, simulations and analysis are performed using 3-D
modelling software i.e. Solid Works and ANSYS according to the rulebook provided by Indian Society of
New Era Engineers (ISNEE) for National Go Kart Championship (NGKC-14).The maximum deflection is
determined by performing static analysis. Computed results are then compared to analytical calculation,
where it is found that the location of maximum deflection agrees well with theoretical approximation but
varies on magnitude aspect.
In récent year various vehicle introduced in market but due to limitation in
carbon émission and BS Séries limitd speed availability vehicle in the market and causing of
environnent pollution over few year There is need to decrease dependancy on fuel vehicle.
bicycle is to be modified for optional in the future To implement new technique using change in
pedal assembly and variable speed gearbox such as planetary gear optimise speed of vehicle
with variable speed ratio.To increase the efficiency of bicycle for confortable drive and to
reduce torque appli éd on bicycle. we introduced epicyclic gear box in which transmission done
throgh Chain Drive (i.e. Sprocket )to rear wheel with help of Epicyclical gear Box to give
number of différent Speed during driving.To reduce torque requirent in the cycle with change in
the pedal mechanism
Integration of Struts & Spring & Hibernate for Enterprise ApplicationsIJMER
The proposal of this paper is to present Spring Framework which is widely used in
developing enterprise applications. Considering the current state where applications are developed using
the EJB model, Spring Framework assert that ordinary java beans(POJO) can be utilize with minimal
modifications. This modular framework can be used to develop the application faster and can reduce
complexity. This paper will highlight the design overview of Spring Framework along with its features that
have made the framework useful. The integration of multiple frameworks for an E-commerce system has
also been addressed in this paper. This paper also proposes structure for a website based on integration of
Spring, Hibernate and Struts Framework.
Microcontroller Based Automatic Sprinkler Irrigation SystemIJMER
Microcontroller based Automatic Sprinkler System is a new concept of using
intelligence power of embedded technology in the sprinkler irrigation work. Designed system replaces
the conventional manual work involved in sprinkler irrigation to automatic process. Using this system a
farmer is protected against adverse inhuman weather conditions, tedious work of changing over of
sprinkler water pipe lines & risk of accident due to high pressure in the water pipe line. Overall
sprinkler irrigation work is transformed in to a comfortableautomatic work. This system provides
flexibility & accuracy in respect of time set for the operation of a sprinkler water pipe lines. In present
work the author has designed and developed an automatic sprinkler irrigation system which is
controlled and monitored by a microcontroller interfaced with solenoid valves.
On some locally closed sets and spaces in Ideal Topological SpacesIJMER
In this paper we introduce and characterize some new generalized locally closed sets
known as
δ
ˆ
s-locally closed sets and spaces are known as
δ
ˆ
s-normal space and
δ
ˆ
s-connected space and
discussed some of their properties
Intrusion Detection and Forensics based on decision tree and Association rule...IJMER
This paper present an approach based on the combination of, two techniques using
decision tree and Association rule mining for Probe attack detection. This approach proves to be
better than the traditional approach of generating rules for fuzzy expert system by clustering methods.
Association rule mining for selecting the best attributes together and decision tree for identifying the
best parameters together to create the rules for fuzzy expert system. After that rules for fuzzy expert
system are generated using association rule mining and decision trees. Decision trees is generated for
dataset and to find the basic parameters for creating the membership functions of fuzzy inference
system. Membership functions are generated for the probe attack. Based on these rules we have
created the fuzzy inference system that is used as an input to neuro-fuzzy system. Fuzzy inference
system is loaded to neuro-fuzzy toolbox as an input and the final ANFIS structure is generated for
outcome of neuro-fuzzy approach. The experiments and evaluations of the proposed method were
done with NSL-KDD intrusion detection dataset. As the experimental results, the proposed approach
based on the combination of, two techniques using decision tree and Association rule mining
efficiently detected probe attacks. Experimental results shows better results for detecting intrusions as
compared to others existing methods
Natural Language Ambiguity and its Effect on Machine LearningIJMER
"Natural language processing" here refers to the use and ability of systems to process
sentences in a natural language such as English, rather than in a specialized artificial computer
language such as C++. The systems of real interest here are digital computers of the type we think of as
personal computers and mainframes. Of course humans can process natural languages, but for us the
question is whether digital computers can or ever will process natural languages. We have tried to
explore in depth and break down the types of ambiguities persistent throughout the natural languages
and provide an answer to the question “How it affects the machine translation process and thereby
machine learning as whole?” .
Today in era of software industry there is no perfect software framework available for
analysis and software development. Currently there are enormous number of software development
process exists which can be implemented to stabilize the process of developing a software system. But no
perfect system is recognized till yet which can help software developers for opting of best software
development process. This paper present the framework of skillful system combined with Likert scale. With
the help of Likert scale we define a rule based model and delegate some mass score to every process and
develop one tool name as MuxSet which will help the software developers to select an appropriate
development process that may enhance the probability of system success.
Material Parameter and Effect of Thermal Load on Functionally Graded CylindersIJMER
The present study investigates the creep in a thick-walled composite cylinders made
up of aluminum/aluminum alloy matrix and reinforced with silicon carbide particles. The distribution
of SiCp is assumed to be either uniform or decreasing linearly from the inner to the outer radius of
the cylinder. The creep behavior of the cylinder has been described by threshold stress based creep
law with a stress exponent of 5. The composite cylinders are subjected to internal pressure which is
applied gradually and steady state condition of stress is assumed. The creep parameters required to
be used in creep law, are extracted by conducting regression analysis on the available experimental
results. The mathematical models have been developed to describe steady state creep in the composite
cylinder by using von-Mises criterion. Regression analysis is used to obtain the creep parameters
required in the study. The basic equilibrium equation of the cylinder and other constitutive equations
have been solved to obtain creep stresses in the cylinder. The effect of varying particle size, particle
content and temperature on the stresses in the composite cylinder has been analyzed. The study
revealed that the stress distributions in the cylinder do not vary significantly for various combinations
of particle size, particle content and operating temperature except for slight variation observed for
varying particle content. Functionally Graded Materials (FGMs) emerged and led to the development
of superior heat resistant materials.
Energy Audit is the systematic process for finding out the energy conservation
opportunities in industrial processes. The project carried out studies on various energy conservation
measures application in areas like lighting, motors, compressors, transformer, ventilation system etc.
In this investigation, studied the technical aspects of the various measures along with its cost benefit
analysis.
Investigation found that major areas of energy conservation are-
1. Energy efficient lighting schemes.
2. Use of electronic ballast instead of copper ballast.
3. Use of wind ventilators for ventilation.
4. Use of VFD for compressor.
5. Transparent roofing sheets to reduce energy consumption.
So Energy Audit is the only perfect & analyzed way of meeting the Industrial Energy Conservation.
An Implementation of I2C Slave Interface using Verilog HDLIJMER
The focus of this paper is on implementation of Inter Integrated Circuit (I2C) protocol
following slave module for no data loss. In this paper, the principle and the operation of I2C bus protocol
will be introduced. It follows the I2C specification to provide device addressing, read/write operation and
an acknowledgement. The programmable nature of device provide users with the flexibility of configuring
the I2C slave device to any legal slave address to avoid the slave address collision on an I2C bus with
multiple slave devices. This paper demonstrates how I2C Master controller transmits and receives data to
and from the Slave with proper synchronization.
The module is designed in Verilog and simulated in ModelSim. The design is also synthesized in Xilinx
XST 14.1. This module acts as a slave for the microprocessor which can be customized for no data loss.
Discrete Model of Two Predators competing for One PreyIJMER
This paper investigates the dynamical behavior of a discrete model of one prey two
predator systems. The equilibrium points and their stability are analyzed. Time series plots are obtained
for different sets of parameter values. Also bifurcation diagrams are plotted to show dynamical behavior
of the system in selected range of growth parameter
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Improving Mechanical Properties of AL 7075 alloy by Equal Channel Angular Extrusion process
1. www.ijmer.com
International Journal of Modern Engineering Research (IJMER)
Vol. 3, Issue. 5, Sep - Oct. 2013 pp-2713-2716
ISSN: 2249-6645
Improving Mechanical Properties of AL 7075 alloy by Equal
Channel Angular Extrusion process
Preparation of Papers for Kumar M1, Venkata Ajay Kumar G2
Mohan Reddy1, Santhosh International Journal of Modern
1(Department of Mechanical Engineering,KSRM College of Engineering / Bold)
Engineering and Research (16 JNT University, Annatapur, India)
2 (Department of Mechanical Engineering,Sri Venkateswara Institute of Science and Technology / JNT University,
Annatapur, India)
ABSTRACT: The influence of the microstructure and the tensile properties is investigated in specimens of ultrafinegrained materials processed by equal channel angular extrusion (ECAE) through route A, to refine grain size of 7075 AL
alloy this was attempted at room temperature. Sub-grains/cells increases and the width of boundaries decrease while the
cell/sub-grain size remains approximately constant as the number of passes increases. Yield stress and ultimate tensile stress
reach a maximum after four passes. This study shows that severe plastic deformation has potential to significantly improve
the mechanical properties of Al alloys. Static annealing experiments demonstrated that the extensive grain growth occurs at
can be achieved after the age hardened treatment before that solution heat treatment at 480°C for 1 hour followed by age
hardening at 177°C for 8 hours. Microstructure evolution during repetitive equal-channel angular extrusion (ECAE) of Al
7075 alloy with Φ=120◦ die and the outer arc ψ=50◦ was evaluated by optical microscopy.
Keywords: Aluminum alloy, Equal channel angular extrusion, Mechanical Properties, Microstructure analysis, Severe
plastic deformation
I.
INTRODUCTION
Nanostructured (NC) and ultrafine grained (UFG) materials, defined, respectively, as polycrystalline materials with
a grain size below ~100 nm and ~1µm, have been extensively studied over the past two decades because of their enhanced
properties [1–3]. Generally, these materials exhibit a high strength but only limited ductility [4]. Recently, different
approaches have been considered in an attempt to overcome this limitation [4, 5]. The grain size produced by conventional
methods is greater than 1µm.The deformation mechanism of UFG metals is often considered to be governed not only by the
activity of lattice dislocations, but also by mechanisms such as grain rotation and grain boundary sliding, especially in
equiaxed microstructures [6]. There are also some methods for producing ultrafine-grained structure even to the size of
nanometer, such as gas condensation and high-energy ball milling. These methods are difficult to produce in bulk form,
which then limits the application in industries. Many researchers have shown that sub-micrometer grained (SMG) materials
can be obtained after ECAP deformation. Although SMG materials can be produced by ECAP, the deformation mechanism
and microstructure evolution in ECAP is still not clear. The SMG structure formed by SPD is characterized by mixture of
both high angle boundaries (HABs) and low angle boundaries (LABs) (Bay et al. 1992a). The boundaries formed by SPD
have been described as non-equilibrium boundaries. Which are associated with high internal stresses (Furukawa et at 1996a).
The SMG structure of aluminum alloy formed by SPD has been suggested as a result of extended recovery (Humphrevs et al.
1995). In general, the microstructure developed by SPD is not well-defined ultrafine-grained structure for it doesn’t consist
of grains enclosed by HABs. Thus further annealing is required to construct a microstructure consists of fine grains enclosed
by HABs. The present study deals with ECAE were used to deform the material and obtain ultrafine-grained structure. One
important goal of this research is to advance our understanding of the deformation mechanism in ECAE, and to identify the
key parameters that affect the microstructure evolution. The material is extruded up to two passes by route A. The detailed
microscopic characterization was carried out to obtain comprehensive and quantitative information about the structure
developed by various ECAP processes to achieve the goal.
II.
EXPERIMENTAL MATERIAL AND PROCEDURES
2.1 Experimental Material
All the experiments were conducted using AL 7075 alloy. The material was produced in the form of ingot with a
diameter of 14.9mm and a length of 50mm. The ECAE process uses a die, material for extrusion and plunger attached to the
universal testing machine for the extrusion process.
www.ijmer.com
2713 | Page
2. www.ijmer.com
International Journal of Modern Engineering Research (IJMER)
Vol. 3, Issue. 5, Sep - Oct. 2013 pp-2713-2716
ISSN: 2249-6645
2.2 Methodology
Die Design
&
Die Fabrication
Aluminum
7075 alloy
Severe Plastic
Deformation
Microstructure
&
Mechanical Properties
Structural
Evaluation
Results and
Discussions
Fig. 1 Methodology
2.3 ECAE Die
The ECAE die contains two channels, equal in cross-section, intersecting at an angle near the center of the die. The
test sample is machined to fit within these channels and it is pressed through the die using a plunger. Die material was mild
steel and the plunger was EN8 steel (normalized condition), the normalizing of EN8 steel was carried out by heating above
the upper-critical-temperature line followed by cooling in still air to room temperature. The purpose of normalizing is to
produce harder and stronger steel than annealing, so that for some applications normalizing may be a final heat treatment.
Normalizing may also be used to improve mach inability, modify and refine cast dendritic structures, and refine the grain
and homogenize the microstructure in order to improve the response in hardening operations. The geometry of this die
provides that the material is deformed by simple shear at ideal, frictionless, conditions. The cross section of the specimen
remains about equal before and after a processing step, thus it is possible to subject one specimen several times to ECAP in
order to reach highest degrees of plastic deformation.
Fig. 2.1 ECAE Die
A circular cross section of the channel provides the possibility of a materials processing at different routes that are
distinguished by their different combinations of sample rotation around the channel axes between consecutive processing
steps. Here route A is used for the extrusion of the material and four billets are prepared for four experiments i.e., basic
material, one pass, two and three passes. The die angle 120° was used in this study. The outer arc (Ψ) of the 120° die is 50°.
The dimension of the channel cross section in ECAE die is 120x120mm. According to equation (1), the strain per pass of the
120° die is 0.67. In considering both Φ and ψ, the equivalent strain of ECAE can be calculated by (Iahashi et al. 1996).
ЄN =N {2cot (Φ /2+ ψ/2)+ ψcosec(Φ /2+ ψ/2)}
√3
------ (1)
www.ijmer.com
2714 | Page
3. www.ijmer.com
International Journal of Modern Engineering Research (IJMER)
Vol. 3, Issue. 5, Sep - Oct. 2013 pp-2713-2716
ISSN: 2249-6645
III.
EXPERIMENTAL RESULTS
3.1 Microstructural Characteristics
Al 7075 was solution treated at 480°C for 1 hour and then followed by water quenching.
Fig 3.1.a
Fig 3.1.b
Fig 3.1.d
Fig 3.1.c
Fig 3.1.e
Fig 3.1a, optical micrograph of Al 7075, 100X, Keller’s reagent. After solution heat treated at 480°C for 1 hour
quenched with water, fusion voids, (black area) and agglomeration of insoluble phases (dark gray). Fig 3.1b, Al 7075 was
solution heat treated at 480°C, and then artificial aging at 177°C for 8 hours, optical micrograph of Al 7075, 400X, solution
treated at 480°C quenched to the water, eutectic melting temperature was exceeded during solution heat treatment, fine voids
(black areas), and Keller’s reagent. Al 7075 solution treated at 480°C for 1 hour and then aged at 177°C for 8 hours, which
was processed through ECAP route A. Fig 3.1c, optical micrograph of Al 7075 extruded, solution heat treated, and
artificially aged, fine particles of MgZn2 (dark), 100X, ECAP 1st pass, Keller’s reagent. Fig 3.1d, optical micrograph of Al
7075 under ECAP processing, particles are insoluble (Fe, Mn) Al 6 (dark gray), 100X, ECAP 2nd pass Keller’s reagent. Fig
3.1e, optical micrograph of Al 7075, under route A for ECAP processing 3 rd pass, the fine particles of MgZn2 (dark), the
insoluble particles of FeAl3 (light gray) 100X, ECAP 3rd pass Keller’s reagent.
3.2 Tensile properties
Fig. 3.2 Number of Passes Vs Percentage area in Elongation and reduction
For the Al 7075 alloy as received condition Elongation to failure occurs at 5% and it decrease to 4% after single
pass, the area of reduction of 7075 alloy as received condition 28% and it reduced to 18% after single pass. It shows that
percentage of area of reduction decreases drastically, while we increasing number of ECAP passes. The ultimate tensile
strenth increases from 329 MPa as received condition for ultrafine grained Al 7075 alloy, it reaches about 487 MPa after
single pass.
www.ijmer.com
2715 | Page
4. www.ijmer.com
International Journal of Modern Engineering Research (IJMER)
Vol. 3, Issue. 5, Sep - Oct. 2013 pp-2713-2716
ISSN: 2249-6645
3.3 Hardness test
Fig 3.3 Number of passes vs Hardness number
The Al 7075 alloy hardness is tremendously increased while we increasing the number of ECAE passes, Al 7075 alloy has
achieved high hardness after the third pass is about 197 HV.
IV.
CONCLUSION
It was found two passes of ECAE are required for the formation of ultra fine grained structure in Al 7075 alloy. The
resulting microstructure has been widely investigated by optical microscopy, putting in evidence the grain structure and
precipitates distribution differences originated by the process. Tensile tests show the increase of strength from one pass to
another pass of the material. Hardness is also increased by increasing the number of passes due to the fine grain structure;
this survey gives clear prediction that tremendous increase of hardness has achieved compare to base metal.
REFERENCES
Journal Papers:
[1]
[2]
[3]
[4]
[5]
Segal V. M., Reznikov V. I., Drobyshevskiy A. E., Kopylov V. I.,Plastic working of metals by simple shear, Russian Metallurgy
(Metally), 1, 1981, 99-105.
Iwanishi Y, Horita Z, Nemoto M, Langdon T, Acta Mater., 46, 1998, 3317.
Aida T., Matsuki K., Horita Z. and Langdon T. G, Estimating the equivalent strain in equal-channel angular pressing. Scripta
Mater.,2001, 44, 575.
Valiev RZ, Alexandrov IV, Zhu YT, Lowe TC. J Mater Res 2002; 17, 5.
Wang YM, Ma E., Acta Mater 2004; 52, 1699.
Theses:
[6]
Dalla Torre FH, Microstructure and deformation mechanism of nanocrystalline Ni synthesized by three different methods.doctoral
diss., Switzerland; 2003
www.ijmer.com
2716 | Page