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Title page for ETD etd-09052018-110516


Type of Document Master's Thesis
Author Matthews, Jacob Russell
Author's Email Address jacob.matthews@vanderbilt.edu
URN etd-09052018-110516
Title A study of the critical viscosity model of friction stir welding in relation to tool features
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Alvin M. Strauss Committee Chair
George E. Cook Committee Member
Keywords
  • friction stir weld tools
  • friction stir welding database
  • friction stir welding tool study
  • friction stir welding tool features
  • friction stir welding
  • friction stir welding critical viscosity model
  • welding
  • solid state joining
  • friction stir welding tools
  • critical viscosity
Date of Defense 2018-09-30
Availability unrestricted
Abstract
Modeling Friction Stir Welding (FSW) has proven elusive over the past two decades since being patented by The Welding Institute in 1991. One promising model developed by Nandan et al. explains material flow through a critical viscosity. Material flow using a critical viscosity model is developed and examines how tool features affect viscosity and material flow. Four different tools with different features were used to conduct experimental welds to determine the roles of shoulder scrolls, pin threads, and the shape of the pin. In-process forces were measured, and specimen were tensile tested to analyze the impact of tool features. Finally, a new method to compare welding parameters across different tools and machines is developed and optimal parameters are discussed.
Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  MatthewsJ.pdf 1.24 Mb 00:05:43 00:02:56 00:02:34 00:01:17 00:00:06

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