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http://dx.doi.org/10.3795/KSME-A.2006.30.6.637

In-situ Measurement of Plastic Zone Developed During Ductile Fracture Process  

Back Jung-Hyun (전남대학교 대학원 기계공학과)
Kim Do-Hyung (전남대학교 대학원 기계공학과)
Kang Ki-Ju (전남대학교 공과대학 기계시스템공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.30, no.6, 2006 , pp. 637-642 More about this Journal
Abstract
A plastic zone size is regarded as a measure of material resistance, and also it determines the fracture behavior. The importance of estimating or measuring the plastic zone size cannot be too emphasized. In this article, SDSP(Stereo Digital Speckle Photography) is examined as a new techniques to measure the plastic zone developed in a ductile metal. This technique is simple, vibration free and non-contact, and measures simultaneously in-plane displacements as well as out-of plane displacements like the side necking. Experimental results for a CT specimen are presented to demonstrate the accuracy in comparison with those obtained by recrystallization technique and finite element analysis.
Keywords
Digital Image Correlation(DIC); Plastic Region; Recrystallization; Stereoscopic Digital Speckle Photography(SDSP);
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