sarang pande - Academia.edu (original) (raw)
Papers by sarang pande
Advances in Mechanical Engineering, Jul 1, 2023
The objective of this research is to experimentally investigate the metallurgical, mechanical, an... more The objective of this research is to experimentally investigate the metallurgical, mechanical, and tribological behavior of [Formula: see text], SiC, and [Formula: see text] reinforced AZ31 magnesium metal matrix composite (MMC) fabricated via powder metallurgy process. Accordingly, the mixing of the powders was carried out through ball milling operation at various times with constant speeds. The compaction of the milled powder was carried out on hydraulic press at various compaction pressures. The improvement of the wear resistance performance at 10 and 5 vol.% SiC were revealed around 12.9% and 25.8%. The fracture mechanisms of the optimal specimen resulting from the compression test were studied under SEM observation and it revealed that both ductile and brittle fractures occurred. The results from the confirmation test revealed an improvement of 2.04 g/cm3, 13%, 110.35 MPa, and 1293.399 MPa for actual density, porosity, ultimate strength, and hardness, respectively. The uniform nature of particle distribution was observed in SEM micrograph under investigation of the microstructure of the sample. The average particle size of the sample was also obtained around 809.14 nm. The proposed material is expected to be useful for various automotive and aerospace applications precisely for pistons and wings of airplane in aerospace.
Metals
Incremental sheet forming (ISF) requires no or partial dies for sheet metal fabrication and is wi... more Incremental sheet forming (ISF) requires no or partial dies for sheet metal fabrication and is widely used for small batch production. In this process, necking is either suppressed or delayed due to the localized nature of tool–sheet contact; hence, more strains than conventional stamping and deep drawing are obtained. In the present study, two variations of ISF, namely cold ISF (CISF) and warm ISF (WISF), are compared. First, FEA modeling is carried out on ABAQUS to reach the forming forces involved in the process. It is found that WISF reduces the forming forces. The temperature for WISF is maintained at 180 °C. Following the simulation analysis, tests are carried out. The forming force in WISF is 55.77% less than that in CISF. The part fabricated by CISF is slightly more substantial than that by WISF; however, more forming depth can be achieved by WISF. There is a more uniform thickness distribution in the case of CISF than in WISF. However, the surface quality of the CISF produc...
International Journal for Simulation and Multidisciplinary Design Optimization
An engine bracket is one of the most critical components of the engine used for mounting and supp... more An engine bracket is one of the most critical components of the engine used for mounting and supporting the engine in the vehicles. Today, the automobile industry requires lightweight components, which will reduce the car's overall weight when fitted into the vehicle. Topology optimization is a technique with the help of which the surface of a component is optimized to get the required shape for having reduced weight. The weight is reduced by optimizing the material on the surface of the details. In this paper, the work done is the application of topology optimization on the surface of the engine bracket arm. Then the optimized model is tested computationally using realistic conditions. Bi-directional evolutionary structural optimization is used as a technique for topology optimization. With the help of the BESO method, the material optimization is done, and then the weights are compared with the original component. A new algorithm is developed using MATLAB codes. The sensitivit...
2022 International Conference on Automation, Computing and Renewable Systems (ICACRS)
Crystals
Additive manufacturing (AM) has started to unfold diverse fields of applications by providing uni... more Additive manufacturing (AM) has started to unfold diverse fields of applications by providing unique solutions to manufacturing. Laser cladding is one of the prominent AM technologies that can be used to fulfill the needs of custom implants. In this study, the wear resistance of the laser cladded titanium alloy, Ti-17Nb-6Ta, has been evaluated under varied loads in Ringer’s solution. Microstructural evaluation of the alloy was performed by SEM and EDX, followed by phase analysis through XRD. The wear testing and analysis have been carried out with a tribometer under varied loads of 10, 15, and 20 N while keeping other parameters constant. Abrasion was observed to be the predominant mechanism majorly responsible for the wearing of the alloy at the interface. The average wear rate and coefficient of friction values were 0.016 mm3/Nm and 0.22, respectively. The observed values indicated that the developed alloy exhibited excellent wear resistance, which is deemed an essential property ...
Crystals
Titanium (Ti) and its alloys are predominant choices for use as biomaterials in human implants. R... more Titanium (Ti) and its alloys are predominant choices for use as biomaterials in human implants. Research has shown the adverse effects of using commercial Ti alloy Ti-6Al-4V in the human body, and this presents a need for viable alternatives. In this study, Ti alloy Ti-17Nb-6Ta was manufactured by laser cladding—a prominent additive manufacturing (AM) technology. Laser cladded specimens were evaluated for their in vitro and electrochemical behavior. A human osteosarcoma cell line (MG-63 cells) was used for in vitro investigations. Cell proliferation was good in the physiological medium, and cells were alive when in contact with the laser cladded alloy, even after two to three weeks, indicating good cell viability and compatibility with this alloy. Electrochemical characterization was carried out in Ringer’s solution, and noticeably lower corrosion current density and corrosion rate values were observed. The lower amounts of these parameters indicated the passivation behavior due to ...
Materials Today: Proceedings
2021 International Conference on Computational Intelligence and Knowledge Economy (ICCIKE)
A prosthetic finger is designed for a prosthetic hand in an amputated arm. A robotic prosthetic h... more A prosthetic finger is designed for a prosthetic hand in an amputated arm. A robotic prosthetic hand gives ability to artificially control moments of the arm. New concepts of bionic hands are being developed for mimicking the natural human hand. The pace of improving the bionic technology, it is expected for importance will increase the demand and use of bionic hands. In this paper, a concept of new design of fingers, which acts as compliant for prosthetic applications, are proposed. The concept of human hand replicated to the modern bionic hands are made using topology optimization tool based on geometry of structure. The finite element analysis (FEA) is done using ANSYS workbench tool. Circular and rectangular primitives are selected for static structural analysis with the help of FEA. Deformation and equivalent stresses are obtained from FEA model. Based on FEA output, monolithic structure of prosthetic hand are generated using topology optimization.
International Journal of Production Engineering, Nov 8, 2017
Gear manufacturing processes selections are a key issue in the optimal design of the industrial p... more Gear manufacturing processes selections are a key issue in the optimal design of the industrial product. Gear manufacturing process selection is a difficult and subtle task because of an immense number of the different available gear manufacturing process. Increasing Demand for gears in the different field of applications has forced manufacturers to design and develop gears which compete in the global market and satisfy the user requirements as well as environmental conditions. Various attributes of gear manufacturing process which are generally considered by a consumer are surface roughness, dimensional accuracy, geometrical complexity, production rate, relative cost, and production run so as to provide consumers the desired value and satisfaction level. Currently, numerous gear manufacturing process are available in the market having their own merits and demerits, appropriate methodology for selection is essential. A MCDM-TOPSIS Approach has been used in the paper to select the appropriate gear manufacturing process considering several criteria.
Lecture Notes in Mechanical Engineering, 2020
Lecture Notes in Mechanical Engineering, 2018
Electronic packaging (EP) is widely used for support and enclosure or housing of electronic compo... more Electronic packaging (EP) is widely used for support and enclosure or housing of electronic component. This paper includes design of EP and comparisons of analytic and static structural analysis for deformation of EP. Design of EP is carried by commercial software PTC Creo Parametric 2.0. It consists of five main parts and some other additional parts and to run the analysis. The design includes mounting of electronic circuits; improving testing capability and reliability, a way for heat dissipation and reducing manufacturing cost and time. Finite element analysis (FEA) of EP has been carried out using ANSYS workbench 15.0 software. Two types of latches (Product of Southco Company Ltd.) are used in EP for easy movement of tray (EP) in cage. Mechanisms of latch are push to open and push to close. These mechanisms are used for easy visual inspection on solder side and component side. E4 latch and A4 latch are respectively plastic latch and metal latch. Force is required for latching an...
Crushers are machines used to break or compress using the metallic plates during mining of materi... more Crushers are machines used to break or compress using the metallic plates during mining of materials. The chronic problem of High Maintenance cost and extensive downtime in Jaw crusher. In this paper this problem is solved by implementing various techniques like process mapping, why why analysis, Brain storming and appropriate use of plan-do-check-act (PDCA) cycle. The developments achieved by these techniques led to increase in customer satisfaction and productivity enhancement. Keywords— Just in Time (JIT), On Time In Full, Overall Equipment Effectiveness, POT, PDCA.
International Journal for Simulation and Multidisciplinary Design Optimization, 2020
Steering knuckle connects steering system, suspension system and braking system to the chassis. T... more Steering knuckle connects steering system, suspension system and braking system to the chassis. The steering knuckle contributes a significant weight to the total weight of a vehicle. Increasing the efficiency of an automobile without compromising the performances is the major challenge faced by the manufacturers. This paper presents an effective topology optimization of steering knuckle used in a vehicle with the primary objective of minimizing weight. The study on optimization of knuckle is divided into two phases, the first phase involves making of a computer-aided design model of the original steering knuckle and carry out finite element analysis on the knuckle by estimating the loads, which are acting on the component. In the second phase, design optimization of the model of steering knuckle is carried out, and excess material is removed at the region where induced stress is negligible as obtained in finite element analysis assuming standard boundary and loading conditions. The...
Procedia Manufacturing, 2018
Under the concept of "Industry 4.0", production processes will be pushed to be increasingly inter... more Under the concept of "Industry 4.0", production processes will be pushed to be increasingly interconnected, information based on a real time basis and, necessarily, much more efficient. In this context, capacity optimization goes beyond the traditional aim of capacity maximization, contributing also for organization's profitability and value. Indeed, lean management and continuous improvement approaches suggest capacity optimization instead of maximization. The study of capacity optimization and costing models is an important research topic that deserves contributions from both the practical and theoretical perspectives. This paper presents and discusses a mathematical model for capacity management based on different costing models (ABC and TDABC). A generic model has been developed and it was used to analyze idle capacity and to design strategies towards the maximization of organization's value. The trade-off capacity maximization vs operational efficiency is highlighted and it is shown that capacity optimization might hide operational inefficiency.
Cogent Engineering, 2018
Cardiac or heart sound ca.rries important diagnosis information for several cardiovascular diseas... more Cardiac or heart sound ca.rries important diagnosis information for several cardiovascular diseases, such as natural or prosthetic valve dysfunction and heart failure. Hence, algorithms are required for the analysis of cardiac sound for computer-based automatic diagnosis. In the cardiac sound-based analysis, one of the tasks is to classify abnormal cardiac sounds, i.e. murmurs, caused by various cardiac anomalies. We introduce a new feature named system response which is chosen to be estimated using wavelet bispectrum over Fourier bispectrum because of non-stationary and non-Gaussian nature of cardiac sounds. System response essentially characterizes the cardiac structure responsible for the production of cardiac sounds which is later employed to automatically classify different types of cardiac murmurs. In cases of various types of cardiac murmurs, such as aortic regurgitation and mitral stenosis, system response of the cardiac structures is studied in this paper. Later, an artificial neural network-based classifier is constructed using the system response as a set of features to automatically classify murmur types. Performance of the classifier is obtained with the sensitivity of 93.57% and specificity of 94.24% which is comparable with the sate of the art. Furthermore, system response computed from wavelet bispectrum shows 4% higher accurate classification than Fourier bispectrum.
Rapid Prototyping Journal, 2018
Purpose The purpose of this paper is to propose and develop PA2200-based composite powder contain... more Purpose The purpose of this paper is to propose and develop PA2200-based composite powder containing 0-15 Wt.% magnesium oxide before directly using it in selective laser sintering (SLS) machine to produce end-use products for low-volume production in the engineering applications with keen focus to meet the functional requirements which rely on material properties. Design/methodology/approach The methodology reported emphasises PA2200-based composite powder containing 0-15 Wt.% magnesium oxide development for SLS process which starts with preparation and characterisation of composite material, thermal and rheological study of composite material to decide optimum process parameters for SLS process machine to get optimal part properties. Further, to verify composite material properties, a conventional casting methodology is used. The composition of composite materials those possessing good properties are further selected for processing in SLS process under optimal processing parameter...
Journal of The Institution of Engineers (India): Series C, 2016
The paper presents a literature survey in the field of fused deposition of plastic wires especial... more The paper presents a literature survey in the field of fused deposition of plastic wires especially in the field of slicing and deposition using extrusion of thermoplastic wires. Various researchers working in the field of computation of deposition path have used their algorithms for variable slicing. In the study, a flowchart has also been proposed for the slicing and deposition process. The algorithm already been developed by previous researcher will be used to be implemented on the fused deposition modelling machine. To demonstrate the capabilities of the fused deposition modeling machine a case study has been taken. It uses a manipulated G-code to be fed to the fused deposition modeling machine. Two types of slicing strategies, namely uniform slicing and variable slicing have been evaluated. In the uniform slicing, the slice thickness has been used for deposition is varying from 0.1 to 0.4 mm. In the variable slicing, thickness has been varied from 0.1 in the polar region to 0.4 in the equatorial region Time required and the number of slices required to deposit a hemisphere of 20 mm diameter have been compared with that using the variable slicing.
International Journal of Research in Engineering and Technology, 2016
Additive Manufacturing (AM) technique provides a hi-tech tool for making solid free form products... more Additive Manufacturing (AM) technique provides a hi-tech tool for making solid free form products. Selective Laser Sintering (SLS) is one of the AM technique which uses wide range of materials for making end use products. SLS process has potential to produce superior quality product at low cost and in shorter lead times which gives more customer delights. At present limited materials are accessible with very high cost that impedes increasing number of applications of SLS. To make this technology feasible suitable selection of material and fabrication of product which suit the requirement of application economically is very important. Value Engineering (VE) technique is used to optimize the material during medical components/ devices development using SLS process and it would benefits in producing high strength parts with good aesthetic quality which satisfying the customer needs. VE aims to identify unnecessary cost associated with any product, material, parts, component, system or service by analysis of functions and efficiently eliminating them without impairing the quality and functional reliability and provides optimality.
Advances in Mechanical Engineering, Jul 1, 2023
The objective of this research is to experimentally investigate the metallurgical, mechanical, an... more The objective of this research is to experimentally investigate the metallurgical, mechanical, and tribological behavior of [Formula: see text], SiC, and [Formula: see text] reinforced AZ31 magnesium metal matrix composite (MMC) fabricated via powder metallurgy process. Accordingly, the mixing of the powders was carried out through ball milling operation at various times with constant speeds. The compaction of the milled powder was carried out on hydraulic press at various compaction pressures. The improvement of the wear resistance performance at 10 and 5 vol.% SiC were revealed around 12.9% and 25.8%. The fracture mechanisms of the optimal specimen resulting from the compression test were studied under SEM observation and it revealed that both ductile and brittle fractures occurred. The results from the confirmation test revealed an improvement of 2.04 g/cm3, 13%, 110.35 MPa, and 1293.399 MPa for actual density, porosity, ultimate strength, and hardness, respectively. The uniform nature of particle distribution was observed in SEM micrograph under investigation of the microstructure of the sample. The average particle size of the sample was also obtained around 809.14 nm. The proposed material is expected to be useful for various automotive and aerospace applications precisely for pistons and wings of airplane in aerospace.
Metals
Incremental sheet forming (ISF) requires no or partial dies for sheet metal fabrication and is wi... more Incremental sheet forming (ISF) requires no or partial dies for sheet metal fabrication and is widely used for small batch production. In this process, necking is either suppressed or delayed due to the localized nature of tool–sheet contact; hence, more strains than conventional stamping and deep drawing are obtained. In the present study, two variations of ISF, namely cold ISF (CISF) and warm ISF (WISF), are compared. First, FEA modeling is carried out on ABAQUS to reach the forming forces involved in the process. It is found that WISF reduces the forming forces. The temperature for WISF is maintained at 180 °C. Following the simulation analysis, tests are carried out. The forming force in WISF is 55.77% less than that in CISF. The part fabricated by CISF is slightly more substantial than that by WISF; however, more forming depth can be achieved by WISF. There is a more uniform thickness distribution in the case of CISF than in WISF. However, the surface quality of the CISF produc...
International Journal for Simulation and Multidisciplinary Design Optimization
An engine bracket is one of the most critical components of the engine used for mounting and supp... more An engine bracket is one of the most critical components of the engine used for mounting and supporting the engine in the vehicles. Today, the automobile industry requires lightweight components, which will reduce the car's overall weight when fitted into the vehicle. Topology optimization is a technique with the help of which the surface of a component is optimized to get the required shape for having reduced weight. The weight is reduced by optimizing the material on the surface of the details. In this paper, the work done is the application of topology optimization on the surface of the engine bracket arm. Then the optimized model is tested computationally using realistic conditions. Bi-directional evolutionary structural optimization is used as a technique for topology optimization. With the help of the BESO method, the material optimization is done, and then the weights are compared with the original component. A new algorithm is developed using MATLAB codes. The sensitivit...
2022 International Conference on Automation, Computing and Renewable Systems (ICACRS)
Crystals
Additive manufacturing (AM) has started to unfold diverse fields of applications by providing uni... more Additive manufacturing (AM) has started to unfold diverse fields of applications by providing unique solutions to manufacturing. Laser cladding is one of the prominent AM technologies that can be used to fulfill the needs of custom implants. In this study, the wear resistance of the laser cladded titanium alloy, Ti-17Nb-6Ta, has been evaluated under varied loads in Ringer’s solution. Microstructural evaluation of the alloy was performed by SEM and EDX, followed by phase analysis through XRD. The wear testing and analysis have been carried out with a tribometer under varied loads of 10, 15, and 20 N while keeping other parameters constant. Abrasion was observed to be the predominant mechanism majorly responsible for the wearing of the alloy at the interface. The average wear rate and coefficient of friction values were 0.016 mm3/Nm and 0.22, respectively. The observed values indicated that the developed alloy exhibited excellent wear resistance, which is deemed an essential property ...
Crystals
Titanium (Ti) and its alloys are predominant choices for use as biomaterials in human implants. R... more Titanium (Ti) and its alloys are predominant choices for use as biomaterials in human implants. Research has shown the adverse effects of using commercial Ti alloy Ti-6Al-4V in the human body, and this presents a need for viable alternatives. In this study, Ti alloy Ti-17Nb-6Ta was manufactured by laser cladding—a prominent additive manufacturing (AM) technology. Laser cladded specimens were evaluated for their in vitro and electrochemical behavior. A human osteosarcoma cell line (MG-63 cells) was used for in vitro investigations. Cell proliferation was good in the physiological medium, and cells were alive when in contact with the laser cladded alloy, even after two to three weeks, indicating good cell viability and compatibility with this alloy. Electrochemical characterization was carried out in Ringer’s solution, and noticeably lower corrosion current density and corrosion rate values were observed. The lower amounts of these parameters indicated the passivation behavior due to ...
Materials Today: Proceedings
2021 International Conference on Computational Intelligence and Knowledge Economy (ICCIKE)
A prosthetic finger is designed for a prosthetic hand in an amputated arm. A robotic prosthetic h... more A prosthetic finger is designed for a prosthetic hand in an amputated arm. A robotic prosthetic hand gives ability to artificially control moments of the arm. New concepts of bionic hands are being developed for mimicking the natural human hand. The pace of improving the bionic technology, it is expected for importance will increase the demand and use of bionic hands. In this paper, a concept of new design of fingers, which acts as compliant for prosthetic applications, are proposed. The concept of human hand replicated to the modern bionic hands are made using topology optimization tool based on geometry of structure. The finite element analysis (FEA) is done using ANSYS workbench tool. Circular and rectangular primitives are selected for static structural analysis with the help of FEA. Deformation and equivalent stresses are obtained from FEA model. Based on FEA output, monolithic structure of prosthetic hand are generated using topology optimization.
International Journal of Production Engineering, Nov 8, 2017
Gear manufacturing processes selections are a key issue in the optimal design of the industrial p... more Gear manufacturing processes selections are a key issue in the optimal design of the industrial product. Gear manufacturing process selection is a difficult and subtle task because of an immense number of the different available gear manufacturing process. Increasing Demand for gears in the different field of applications has forced manufacturers to design and develop gears which compete in the global market and satisfy the user requirements as well as environmental conditions. Various attributes of gear manufacturing process which are generally considered by a consumer are surface roughness, dimensional accuracy, geometrical complexity, production rate, relative cost, and production run so as to provide consumers the desired value and satisfaction level. Currently, numerous gear manufacturing process are available in the market having their own merits and demerits, appropriate methodology for selection is essential. A MCDM-TOPSIS Approach has been used in the paper to select the appropriate gear manufacturing process considering several criteria.
Lecture Notes in Mechanical Engineering, 2020
Lecture Notes in Mechanical Engineering, 2018
Electronic packaging (EP) is widely used for support and enclosure or housing of electronic compo... more Electronic packaging (EP) is widely used for support and enclosure or housing of electronic component. This paper includes design of EP and comparisons of analytic and static structural analysis for deformation of EP. Design of EP is carried by commercial software PTC Creo Parametric 2.0. It consists of five main parts and some other additional parts and to run the analysis. The design includes mounting of electronic circuits; improving testing capability and reliability, a way for heat dissipation and reducing manufacturing cost and time. Finite element analysis (FEA) of EP has been carried out using ANSYS workbench 15.0 software. Two types of latches (Product of Southco Company Ltd.) are used in EP for easy movement of tray (EP) in cage. Mechanisms of latch are push to open and push to close. These mechanisms are used for easy visual inspection on solder side and component side. E4 latch and A4 latch are respectively plastic latch and metal latch. Force is required for latching an...
Crushers are machines used to break or compress using the metallic plates during mining of materi... more Crushers are machines used to break or compress using the metallic plates during mining of materials. The chronic problem of High Maintenance cost and extensive downtime in Jaw crusher. In this paper this problem is solved by implementing various techniques like process mapping, why why analysis, Brain storming and appropriate use of plan-do-check-act (PDCA) cycle. The developments achieved by these techniques led to increase in customer satisfaction and productivity enhancement. Keywords— Just in Time (JIT), On Time In Full, Overall Equipment Effectiveness, POT, PDCA.
International Journal for Simulation and Multidisciplinary Design Optimization, 2020
Steering knuckle connects steering system, suspension system and braking system to the chassis. T... more Steering knuckle connects steering system, suspension system and braking system to the chassis. The steering knuckle contributes a significant weight to the total weight of a vehicle. Increasing the efficiency of an automobile without compromising the performances is the major challenge faced by the manufacturers. This paper presents an effective topology optimization of steering knuckle used in a vehicle with the primary objective of minimizing weight. The study on optimization of knuckle is divided into two phases, the first phase involves making of a computer-aided design model of the original steering knuckle and carry out finite element analysis on the knuckle by estimating the loads, which are acting on the component. In the second phase, design optimization of the model of steering knuckle is carried out, and excess material is removed at the region where induced stress is negligible as obtained in finite element analysis assuming standard boundary and loading conditions. The...
Procedia Manufacturing, 2018
Under the concept of "Industry 4.0", production processes will be pushed to be increasingly inter... more Under the concept of "Industry 4.0", production processes will be pushed to be increasingly interconnected, information based on a real time basis and, necessarily, much more efficient. In this context, capacity optimization goes beyond the traditional aim of capacity maximization, contributing also for organization's profitability and value. Indeed, lean management and continuous improvement approaches suggest capacity optimization instead of maximization. The study of capacity optimization and costing models is an important research topic that deserves contributions from both the practical and theoretical perspectives. This paper presents and discusses a mathematical model for capacity management based on different costing models (ABC and TDABC). A generic model has been developed and it was used to analyze idle capacity and to design strategies towards the maximization of organization's value. The trade-off capacity maximization vs operational efficiency is highlighted and it is shown that capacity optimization might hide operational inefficiency.
Cogent Engineering, 2018
Cardiac or heart sound ca.rries important diagnosis information for several cardiovascular diseas... more Cardiac or heart sound ca.rries important diagnosis information for several cardiovascular diseases, such as natural or prosthetic valve dysfunction and heart failure. Hence, algorithms are required for the analysis of cardiac sound for computer-based automatic diagnosis. In the cardiac sound-based analysis, one of the tasks is to classify abnormal cardiac sounds, i.e. murmurs, caused by various cardiac anomalies. We introduce a new feature named system response which is chosen to be estimated using wavelet bispectrum over Fourier bispectrum because of non-stationary and non-Gaussian nature of cardiac sounds. System response essentially characterizes the cardiac structure responsible for the production of cardiac sounds which is later employed to automatically classify different types of cardiac murmurs. In cases of various types of cardiac murmurs, such as aortic regurgitation and mitral stenosis, system response of the cardiac structures is studied in this paper. Later, an artificial neural network-based classifier is constructed using the system response as a set of features to automatically classify murmur types. Performance of the classifier is obtained with the sensitivity of 93.57% and specificity of 94.24% which is comparable with the sate of the art. Furthermore, system response computed from wavelet bispectrum shows 4% higher accurate classification than Fourier bispectrum.
Rapid Prototyping Journal, 2018
Purpose The purpose of this paper is to propose and develop PA2200-based composite powder contain... more Purpose The purpose of this paper is to propose and develop PA2200-based composite powder containing 0-15 Wt.% magnesium oxide before directly using it in selective laser sintering (SLS) machine to produce end-use products for low-volume production in the engineering applications with keen focus to meet the functional requirements which rely on material properties. Design/methodology/approach The methodology reported emphasises PA2200-based composite powder containing 0-15 Wt.% magnesium oxide development for SLS process which starts with preparation and characterisation of composite material, thermal and rheological study of composite material to decide optimum process parameters for SLS process machine to get optimal part properties. Further, to verify composite material properties, a conventional casting methodology is used. The composition of composite materials those possessing good properties are further selected for processing in SLS process under optimal processing parameter...
Journal of The Institution of Engineers (India): Series C, 2016
The paper presents a literature survey in the field of fused deposition of plastic wires especial... more The paper presents a literature survey in the field of fused deposition of plastic wires especially in the field of slicing and deposition using extrusion of thermoplastic wires. Various researchers working in the field of computation of deposition path have used their algorithms for variable slicing. In the study, a flowchart has also been proposed for the slicing and deposition process. The algorithm already been developed by previous researcher will be used to be implemented on the fused deposition modelling machine. To demonstrate the capabilities of the fused deposition modeling machine a case study has been taken. It uses a manipulated G-code to be fed to the fused deposition modeling machine. Two types of slicing strategies, namely uniform slicing and variable slicing have been evaluated. In the uniform slicing, the slice thickness has been used for deposition is varying from 0.1 to 0.4 mm. In the variable slicing, thickness has been varied from 0.1 in the polar region to 0.4 in the equatorial region Time required and the number of slices required to deposit a hemisphere of 20 mm diameter have been compared with that using the variable slicing.
International Journal of Research in Engineering and Technology, 2016
Additive Manufacturing (AM) technique provides a hi-tech tool for making solid free form products... more Additive Manufacturing (AM) technique provides a hi-tech tool for making solid free form products. Selective Laser Sintering (SLS) is one of the AM technique which uses wide range of materials for making end use products. SLS process has potential to produce superior quality product at low cost and in shorter lead times which gives more customer delights. At present limited materials are accessible with very high cost that impedes increasing number of applications of SLS. To make this technology feasible suitable selection of material and fabrication of product which suit the requirement of application economically is very important. Value Engineering (VE) technique is used to optimize the material during medical components/ devices development using SLS process and it would benefits in producing high strength parts with good aesthetic quality which satisfying the customer needs. VE aims to identify unnecessary cost associated with any product, material, parts, component, system or service by analysis of functions and efficiently eliminating them without impairing the quality and functional reliability and provides optimality.