01053015 MANUFACTURING; Department of Mechanical Engineering, KMITL
©2010 John Wiley & Sons, Inc. M P Groover, Principles of Modern Manufacturing
Residual Stresses and Distortion
Rapid heating and cooling in localized regions during FW result in thermal expansion and contraction that cause residual stresses
These stresses, in turn, cause distortion and warpage
Situation in welding is complicated because:
Heating is very localized
Melting of base metals in these regions
Location of heating and melting is in motion (at least in AW)