Author(s)

H. Sakamoto

Abstract

A method of detecting the plastic region from thermal image generated by plastic deformation is proposed. The heat distribution on specimen surface with a center crack was measured by using infrared thermo video system (TVS-8200) under uni-axial tensile test, and the relation between the distribution of temperature rise and the region of plastic deformation was examined. Furthermore, elasto/visco-plastic FE analysis coupled with transient heat conduction analysis was performed. The experimental thermal image was good agreement with analytical one and the applicability of evaluating the plastic deformation behavior by thermography was demonstrated. 1 Introduction The strength, deformation and fracture of strain

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