Analysis of wavy propagation of plastic deformation field by dynamic ESPI

Satoru Toyooka; Rini Widiastuti; Qing-Chuan Zhang

doi:10.1117/12.429557

13 June 2001 Analysis of wavy propagation of plastic deformation field by dynamic ESPI

Satoru Toyooka, Rini Widiastuti, Qing-Chuan Zhang

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429557
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

A dynamic process of deformation in a tensile experiment of an Al-alloy sample was analyzed by a newly developed ESPI system. In a plastic deformation state after yielding of the mailer, propagating strain concentrated band which corresponds to serration by Portevin-LeChatelier effect was observed. In the band, repetition of increasing and decreasing of number of fringes was observed. The phenomenon means the wavy propagation of a plastic deformation state accompanied by localized strain pulsation. Phase analysis of dynamically deforming object was also done.

Citation Download Citation

Satoru Toyooka, Rini Widiastuti, and Qing-Chuan Zhang "Analysis of wavy propagation of plastic deformation field by dynamic ESPI", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429557

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