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A study of the critical viscosity model of friction stir welding in relation to tool features

dc.creatorMatthews, Jacob Russell
dc.description.abstractModeling 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.
dc.subjectfriction stir weld tools
dc.subjectfriction stir welding database
dc.subjectfriction stir welding tool study
dc.subjectfriction stir welding tool features
dc.subjectfriction stir welding
dc.subjectfriction stir welding critical viscosity model
dc.subjectsolid state joining
dc.subjectfriction stir welding tools
dc.subjectcritical viscosity
dc.titleA study of the critical viscosity model of friction stir welding in relation to tool features
dc.contributor.committeeMemberGeorge E. Cook
dc.type.materialtext Engineering University
dc.contributor.committeeChairAlvin M. Strauss

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