Journal
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
Volume 37, Issue 4, Pages 397-404Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijimpeng.2009.07.008
Keywords
MPW; Wave; Impact; Interface; Shock
Categories
Ask authors/readers for more resources
Wavy interface morphology is observed in Magnetic Pulse Welding (MPW) similarly to that of the Explosion Welding process (EXW). It is recognized that interfacial waves are formed in a periodic manner and have well defined wavelength and amplitude. The phenomenon of wave formation in EXW has been subjected to extensive investigations in which empirical and numerical models have been published. In the present study, a wave formation mechanism for MPW is presented. This wave-creation mechanism was studied by evaluating the influence of sample geometry on wave morphology using stereoscopic optical microscopy. It was found that interfacial waves are formed in a Kelvin-Helmholtz instability mechanism. Reflected shock waves interact with the welding collision point at the weld interface, where interferences are the source for the wave's initiation. The collision energy, impact angle, and the geometry of the joint, were found to have the most significant influence on the waves' characteristics. An empirical relationship between interfacial wavelength and the free moving distance of the shock waves in the welded tubular parts was found. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available