Characterization study of the products produced by AM. The parts tested were produced by the fused deposition modeling (FDM) process by varying process parameters. DOE is used to compare the properties with standard properties of PLA.
Optimization of Roughness Value from Tribological Parameters in Hard Turning ...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Optimization of Roughness Value from Tribological Parameters in Hard Turning ...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Influence of tellurium addition on drilling of microalloyed steel (din 38mns6)Lepuufu
Purpose – This paper seeks to evaluate the influence of tellurium content on the machinability of the microalloyed pearlitic steel (DIN 38MnS6).
Two grades of steels were used, one with high (27 times greater) tellurium content and one with a low tellurium content. Machinability of the steel was
determined by the number of holes drilled by the tool before undergoing severe deformation. The drilling test matrix was prepared using a fractional
factorial design with five input variables studied at two levels (25-1). Other variables investigated include cutting speed (45 and 60 m/min), feed rate
(0.15 and 0.25 mm/rev), geometry of the twist drills and use of minimum quantity lubrication (MQL) at the flow rates of 30 and 100 ml/h. Statistical
analysis of the results revealed that composition of the work material was most influential on tool performance. Addition of tellurium to the steel
significantly improved machinability, increasing the number of drilled holes by over 100 per cent. The MQL flow rate was the least influential as increase
in the flow from 30 to 100 ml/h reduced drill life only by about 9 per cent.
Design/methodology/approach – The drilling tests were carried out in the vertical position, up-down, without pre-holes (full drilling). Cutting
speeds of 45 and 60 m/min and feed rates of 0.15 and 0.25 mm/rev were employed. Drills with two sharpening types were tested. Cutting fluid used
was vegetable based and applied using the MQL technique at flow rates of 30 and 100 ml/h. The rejection criterion adopted was severe deformation of
the drills and the number of machined holes was used to measure the machinability of the material.
Findings – Of all the variables investigated in this study, the least influential on drill performance is the MQL flow rate. Increase in the flow rate from
30 to 100 ml/h reduced drill performance by 9 per cent, contrary to expectation. This is a result of the cooling-lubricant action balance promoted by the
cutting fluid applied in low quantities (MQL). The most influential variable on drill performance is addition of Te to the work material which gave over
twofold (103 per cent) improvement in drill performance at the cutting conditions investigated. The Te particles act at the chip-tool interface, reducing
the work necessary to shear the material during chip formation. Increase in both the cutting speed and the feed rate both lowered drill performance
during machining due to associated increase in cutting temperature which tended to accelerate thermally related wear mechanisms.
Originality/value – This work was conducted to evaluate the machinability of a novel alloyed steel employed in the automobile industry. Drilling was
considered as most automobile components especially the engine block is designed with many holes which require drilling process.
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.
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.
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
We, 'Jeetmull Jaichandlall Madras Private Limited', deal in various metal wires and mesh and our firm commitment to quality extends beyond our products. We imbibe quality in every single aspect of our business.
Experimental Analysis & Optimization of Cylindirical Grinding Process Paramet...IJERA Editor
As per the modern Industrial requirements, higher surface finish mechanical components and mating parts with close limits and tolerances, is one of the most important requirement. Abrasive machining processes are generally the last operations performed on manufactured products for higher surface finishing and for fine or small scale material removal. Higher surface finish and high rate of removal can be obtained if a large number of grains act together. This is accomplished by using bonded abrasives as in grinding wheel or by modern machining processes. In the present study, Taguchi method or Design of experiments has been used to optimize the effect of cylindrical grinding parameters such as wheel speed (rpm), work speed, feed (mm/min.), depth of cut and cutting fluid on the surface roughness of EN15AM steel. Ground surface roughness measurements were carried out by Talysurf surface roughness tester. EN15AM steel has several industrial applications in manufacturing of engine shafts, connecting rods, spindles, studs, bolt, screws etc. The results indicated that grinding wheel speed, work piece speed, table feed rate and depth of cut were the significant factors for the surface roughness and material removal rate. Surface roughness is minimum at 2000 r.p.m. of grinding wheel speed , work piece speed 80 rpm, feed rate 275 mm/min. and 0.06 mm depth of cut.
Finite Element Simulation and Experiment of Chip Formation Process during Hig...IDES Editor
As an advanced manufacturing technology which
has been developed rapidly in recent years, high speed
machining is widely applied in many industries. The chip
formation during high speed machining is a complicated
material deformation and removing process. In research area
of high speed machining, the prediction of chip morphology is
a hot and difficult topic. A finite element method based on the
software ABAOUS which involves Johnson-Cook material
model and fracture criterion was used to simulate the serrated
chip morphology and cutting force during high speed
machining of AISI 1045 hardened steel. The serrated chip
morphology and cutting force were observed and measured by
high speed machining experiment of AISI 1045 hardened steel.
The effects of rake angle on cutting force, sawtooth degree
and space between sawteeth were discussed. The investigation
indicates that the simulation results are consistent with the
experiments and this finite element simulation method
presented can be used to predict the chip morphology and
cutting force accurately during high speed machining of
hardened steel.
Polyfilms and laminates testing instrumentsPacorr Testing
Poly Films & Laminates Testing Instruments - Pacorr offers a wide range of highly accurate Poly Films & Laminates Testing Instruments that help the industries in testing the quality of their products. Call now for price: +91 8882149230
Influence of tellurium addition on drilling of microalloyed steel (din 38mns6)Lepuufu
Purpose – This paper seeks to evaluate the influence of tellurium content on the machinability of the microalloyed pearlitic steel (DIN 38MnS6).
Two grades of steels were used, one with high (27 times greater) tellurium content and one with a low tellurium content. Machinability of the steel was
determined by the number of holes drilled by the tool before undergoing severe deformation. The drilling test matrix was prepared using a fractional
factorial design with five input variables studied at two levels (25-1). Other variables investigated include cutting speed (45 and 60 m/min), feed rate
(0.15 and 0.25 mm/rev), geometry of the twist drills and use of minimum quantity lubrication (MQL) at the flow rates of 30 and 100 ml/h. Statistical
analysis of the results revealed that composition of the work material was most influential on tool performance. Addition of tellurium to the steel
significantly improved machinability, increasing the number of drilled holes by over 100 per cent. The MQL flow rate was the least influential as increase
in the flow from 30 to 100 ml/h reduced drill life only by about 9 per cent.
Design/methodology/approach – The drilling tests were carried out in the vertical position, up-down, without pre-holes (full drilling). Cutting
speeds of 45 and 60 m/min and feed rates of 0.15 and 0.25 mm/rev were employed. Drills with two sharpening types were tested. Cutting fluid used
was vegetable based and applied using the MQL technique at flow rates of 30 and 100 ml/h. The rejection criterion adopted was severe deformation of
the drills and the number of machined holes was used to measure the machinability of the material.
Findings – Of all the variables investigated in this study, the least influential on drill performance is the MQL flow rate. Increase in the flow rate from
30 to 100 ml/h reduced drill performance by 9 per cent, contrary to expectation. This is a result of the cooling-lubricant action balance promoted by the
cutting fluid applied in low quantities (MQL). The most influential variable on drill performance is addition of Te to the work material which gave over
twofold (103 per cent) improvement in drill performance at the cutting conditions investigated. The Te particles act at the chip-tool interface, reducing
the work necessary to shear the material during chip formation. Increase in both the cutting speed and the feed rate both lowered drill performance
during machining due to associated increase in cutting temperature which tended to accelerate thermally related wear mechanisms.
Originality/value – This work was conducted to evaluate the machinability of a novel alloyed steel employed in the automobile industry. Drilling was
considered as most automobile components especially the engine block is designed with many holes which require drilling process.
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.
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.
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
We, 'Jeetmull Jaichandlall Madras Private Limited', deal in various metal wires and mesh and our firm commitment to quality extends beyond our products. We imbibe quality in every single aspect of our business.
Experimental Analysis & Optimization of Cylindirical Grinding Process Paramet...IJERA Editor
As per the modern Industrial requirements, higher surface finish mechanical components and mating parts with close limits and tolerances, is one of the most important requirement. Abrasive machining processes are generally the last operations performed on manufactured products for higher surface finishing and for fine or small scale material removal. Higher surface finish and high rate of removal can be obtained if a large number of grains act together. This is accomplished by using bonded abrasives as in grinding wheel or by modern machining processes. In the present study, Taguchi method or Design of experiments has been used to optimize the effect of cylindrical grinding parameters such as wheel speed (rpm), work speed, feed (mm/min.), depth of cut and cutting fluid on the surface roughness of EN15AM steel. Ground surface roughness measurements were carried out by Talysurf surface roughness tester. EN15AM steel has several industrial applications in manufacturing of engine shafts, connecting rods, spindles, studs, bolt, screws etc. The results indicated that grinding wheel speed, work piece speed, table feed rate and depth of cut were the significant factors for the surface roughness and material removal rate. Surface roughness is minimum at 2000 r.p.m. of grinding wheel speed , work piece speed 80 rpm, feed rate 275 mm/min. and 0.06 mm depth of cut.
Finite Element Simulation and Experiment of Chip Formation Process during Hig...IDES Editor
As an advanced manufacturing technology which
has been developed rapidly in recent years, high speed
machining is widely applied in many industries. The chip
formation during high speed machining is a complicated
material deformation and removing process. In research area
of high speed machining, the prediction of chip morphology is
a hot and difficult topic. A finite element method based on the
software ABAOUS which involves Johnson-Cook material
model and fracture criterion was used to simulate the serrated
chip morphology and cutting force during high speed
machining of AISI 1045 hardened steel. The serrated chip
morphology and cutting force were observed and measured by
high speed machining experiment of AISI 1045 hardened steel.
The effects of rake angle on cutting force, sawtooth degree
and space between sawteeth were discussed. The investigation
indicates that the simulation results are consistent with the
experiments and this finite element simulation method
presented can be used to predict the chip morphology and
cutting force accurately during high speed machining of
hardened steel.
Polyfilms and laminates testing instrumentsPacorr Testing
Poly Films & Laminates Testing Instruments - Pacorr offers a wide range of highly accurate Poly Films & Laminates Testing Instruments that help the industries in testing the quality of their products. Call now for price: +91 8882149230
Simulate the look and feel of molded ABS with this tough and versatile plastic. Look and feel of molded ABS. High accuracy with less distortion. For automotive interior components, marketing models and accurate, durable master patterns
for urethane casting applications.
Durable polyamide (nylon) material for real-world physical
testing and functional use. Nicely balanced mechanical properties and processability. Good chemical resistance and low moisture absorption. Medical applications requiring
USP Class VI compliance, or biocompatibility
מדפסת תלת מימד של חברת 3DSystems, אשר מסוגלת להדפיס במגוון חומרי גלם כגון פלדה,אלומיניום,טיטניום,קרמיקה ועוד.
מדפסות ProX 100, ProX 200, ProX 300 מפיקות מודלים בחוזקים סופיים, עם פני השטח היפים בתעשייה במהירות הגבוהה ביותר.
Low pressure Molding could protect LED strip, PCB and magnetic very well. Macromelt & Technomelt as a common molding materials play in an encapsulating and environmentally protection on sensitive electronic components, IC molding sealing, Magnetic over molding and other sensitive components pakage. The main intention is to protect the sensitive electronic components during the molding stress, because high pressure molding would harm the properties of these components. Additionally, low pressure seal molding also protects electronic components against dust, moisture and vibration stress. It is also commonly used for Cable relief and sealing connectors.
Mechanical properties of Continuos Fibers and Nylon-based materials for Mark Two 3D printer. Strong, light and affordable 3d printed plastic objects reinforced with fiber for increased strenght and stiffness.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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3. Technical
specifications
NOZZLE DIAMETER :
0.4 MM
FEED: 20-25 MM/SEC FILAMENT
DIAMETER: 1.75 MM
LAYER RESOLUTION:
0.1-0.3 MM
NOZZLE TIP
DISTANCE: 0.05-0.1
MM
CONTROLLING
SOFTWARE:
ARDUINO
SLICING SOFTWARE:
CURA
FILE FORMAT: STL, G-
CODE
4. Temperature :
Maximum heated bed temperature: about 110° C
Maximum extruder temperature: about 300° C
• Power : 110-220 V
• Connectivity: SD Card
• Build Platform: Aluminium
• XYZ Rods: Stainless Steel (Wear Resistant)
• Stepper Motor: 1.8° Step angle
• Machine dimensions: 45*44*41 cm
• Heat bed size: 220*220 mm
• Machine Weight: 7-9 kg Approx.
5. Printing Process
Product designed in
Uni-graphics NX
software.
File is converted
into STL standard
format.
STL file Is sliced in
CURA software.
Sliced file is then
transferred to
machine using a SD.
Machine start
printing as per the
instructions
provided.
6. Process
Parameters
• Layer height
Extra fine, Fine, Moderate.
• Shelling and infill
Wall thickness, Infill density, Infill pattern
• Material
Printing Temperature, Build plate Temperature
• Speed
Printing speed, Travelling or Transverse speed
• Variation of fan speed
Fan speed : OFF, 25%, 50%, 75%, 100%
• Support
Support placement, Support density, Support
pattern
• Build plate adhesion type
Skirt, Brim, Raft
10. Objective
Development of tensile specimen.
• ASTM D638 TYPE II.
• Build Orientation and Bed Temperature are the process
variable.
Characterization study of the parts produced by FDM.
• Characterization of the mechanical properties
• Optimal selection of process parameters
• Influence of selected parameters
17. Result and Conclusion
• Build orientation does not show any significant effect on mechanical
properties while effect of bed temperature can be observed
accordingly.
• Increase in bed temperature enhance the adhesion between the layer
and substrate plate and moreover the adhesion between the
subsequent layers can be felt as the specimen build at higher bed
temperature shows better tensile and flexural strength.
• The orientation of the printing provides the uniformity of the
temperature over the substrate plate as printing horizontally with
zero degree angle losses adhesiveness away from the center.
18. • Specimen build with build orientation 90° and 70°C bed temperature
shows better tensile properties than other specimens.
• Specimen build with build orientation 90° and 70°C bed temperature
shows better flexural strength than other specimens.
• Build orientation have no significant effect on hardness, while by
increasing the bed temperature up to a certain extent the hardness is
also increased.
19. Applications
• Food safety : PLA meet requirements for use as food containers. It
contains no heavy metals or substances harmful to health. PLA
comply to food migration standards.
• Agricultural seedling trays and transport trays.
• Telephone frames, Furniture parts, Automotive parts.
• Edible oil bottles, cosmetic and shampoo bottles, agro chemicals
bottles, etc.
20. References
Josep M. Puigoriol-Forcada,Flexural fatigue properties of
polycarbonate fused-deposition modelling specimens,
Materials & Design, 8 June 2018.
Giovanni Gomez-Gras, Fatigue performance of fused
filament fabrication PLA specimens, Materials & Design,
30 November 2017.
G. RaghuBabu,Soppari Bhanu Murthy, Investigation of
Dimensional Accuracy and Material Performance in
Fused Deposition Modeling, Volume 5, Issue 11, Part 3,
2018, Pages 23508-23517.
Chun-Ying Lee, Chung-Yin Liu, The Influence of Forced-
Air Cooling on a 3D Printed Part Manufactured by Fused
Filament Fabrication, 9 November 2018.