Shreyes N. Melkote

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Fixture design is a critical step in machining. An important aspect of fixture design is the optimization of the fixture, the primary objective being the minimization of workpiece deflection by suitably varying the layout of fixture elements and the clamping forces. Previous methods for fixture design optimization have treated fixture layout and clamping(More)
In many experiments, some of the factors exist only within the level of another factor. Such factors are often called nested factors. A factor within which other factors are nested is called a branching factor. For example, suppose we want to experiment with two processing methods. The factors involved in these two methods can be different. Thus, in this(More)
Dynamic instability in the form of chatter is a highly undesirable phenomenon that occurs during machining, resulting in poor surface finish and reduced tool life. Though analytical models exist for identifying conditions that avoid chatter, they do not account for process uncertainties or they require extensive cutting tests. Therefore, an on-line chatter(More)
iii ACKNOWLEDGEMENTS I would like to take this opportunity to thank every person who made this project a reality. I would like to specifically thank my advisor, Professor Steven Y. Liang, for his support and guidance throughout my graduate work. He has been an inspirational mentor to me, and trains me to grow as a research scientist. I would especially like(More)
This paper investigates the effect of crystallographic orientation on the mode of material removal (ductile vs. brittle) in diamond scribing of single crystal silicon (c-Si) and offers an explanation for the observed effects in terms of the combined role of phase transformation and slip generation. Single-point diamond scribing tests are performed on (111),(More)