Papers by Samarth Bhaduwala
EDM is an unconventional electro thermal machining process used for manufacturing geometrically c... more EDM is an unconventional electro thermal machining process used for manufacturing geometrically complex or hard material parts that are extremely difficult-to-machine by conventional machining process. The process involves a controlled erosion of electrically conductive materials by the initiation of rapid and repetitive spark discharges between the tool and work piece separated by a small gap of about 0.01mm to 0.50mm. This gap is either flooded or immersed in a dielectric fluid. The controlled pulsing of direct current between the tool and the work piece produces the spark discharge. EDM researchers have explored a number of ways to improve the material removal rate with various experimental concepts. Despite a range of different approaches, every new research shares the same objectives of achieving high material removal rate with reduction in tool wear and improved surface quality. This paper present the vast array of research work carried out within past decades for the development of EDM. This study is mainly focused on aspects related to material removal rate which are the most important parameters from the point of view of selecting the relevant process parameters as well as different heat treatment process.
EDM is an unconventional electro thermal machining process used for manufacturing geometrically c... more EDM is an unconventional electro thermal machining process used for manufacturing geometrically complex or hard material parts that are extremely difficult-to-machine by conventional machining process. The process involves a controlled erosion of electrically conductive materials by the initiation of rapid and repetitive spark discharges between the tool and work piece separated by a small gap of about 0.01mm to 0.50mm. This gap is either flooded or immersed in a dielectric fluid. The controlled pulsing of direct current between the tool and the work piece produces the spark discharge. EDM researchers have explored a number of ways to improve the material removal rate with various experimental concepts. Despite a range of different approaches, every new research shares the same objectives of achieving high material removal rate with reduction in tool wear and improved surface quality. This paper present the vast array of research work carried out within past decades for the development of EDM. This study is mainly focused on aspects related to material removal rate which are the most important parameters from the point of view of selecting the relevant process parameters as well as different heat treatment process.
Whereas the efficiency of traditional cutting processes is limited by the mechanical properties o... more Whereas the efficiency of traditional cutting processes is limited by the mechanical properties of the processed material and the complexity of the workpiece geometry, electrical discharge machining (EDM) being a thermal erosion process, is subject to no such constraints. The lack of correlations between the cutting rate, the surface finish and the physical material parameters of this process made it difficult to use. This paper highlights the development of a comprehensive mathematical model for correlating the interactive and higher order influences of various electrical discharge machining parameters through response surface methodology (RSM), utilizing relevant experimental data as obtained through experimentation. The adequacy of the above the proposed models have been tested through the analysis of variance (ANOVA). Optimal combination of these parameters was obtained for achieving controlled EDM of the workpieces.
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Papers by Samarth Bhaduwala