Type of Document	Master's Thesis
Author	Houser, Scott A.
URN	etd-10072005-094859
Title	Medial surface transformations for rapid approximation of casting solidification
Degree	Master of Science
Department	Mechanical Engineering
Advisory Committee	Advisor Name Title Bohn, Jan Helge Committee Chair Deisenroth, Michael P. Committee Member Myklebust, Arvid Committee Member
Keywords	measurement instruments
Date of Defense	1996-07-05
Availability	restricted
Abstract This thesis demonstrates the feasibility of using a medial surface transformation as a tool to rapidly approximate the solidification patterns of convex faceted solid models of castings. The medial surface transformation is used to automate the greatest included sphere approach to solidification pattern approximation. The experimental software of this thesis extracts the medial surface transformation from a convex faceted model by computing the model's Voronoi diagram and uses it to identify casting hot spots and cooling patterns. Comparison with a finite difference method (FDM) solution showed that the locations and shapes of hot spots predicted by FDM converge to the shapes and locations predicted by the experimental software.
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