Metal cutting analogy for establishing Friction Stir Welding process parameters

• Main Author: Stafford, Sylvester Allen
• Other Authors: Judith A. Schneider
• Format: Others
• Language: en
• Published: MSSTATE 2015
• Subjects: Mechanical Engineering
• Online Access: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212015-222140/

<p>A friction stir weld (FSW) is a solid state joining operation whose processing parameters are currently determined by lengthy trial and error methods. To implement FSWing rapidly in various applications will require an approach for predicting process parameters based on the physics of the process. Based on hot working conditions for metals, a kinematic model has been proposed for calculating the shear strain and shear strain rates during the FSW process, validation of the proposed model with direct measuring is difficult however.</p> <p> Since the shear strain and shear strain rates predicted for the FSW process, are similar to those predicted in metal cutting, validation of the FSW algorithms with microstructural studies of metal chips may be possible leading to the ability to predict FSW processing parameters. </p>