Plastic Zone Size Determination by Temperature Measurement

[+] Author and Article Information
N. Rajic, Y. C. Lam

Department of Mechanical Engineering, Monash University, Clayton, Victoria 3168, Australia

A. K. Wong

Aeronautical & Maritime Research Laboratory, Defence Science and Technology Organisation, 506 Lorimer Street, Fishermens Bend, Victoria 3207, Australia

J. Eng. Mater. Technol 119(1), 32-39 (Jan 01, 1997) (8 pages) doi:10.1115/1.2805970 History: Received June 19, 1994; Revised June 18, 1995; Online December 05, 2007


This paper presents a temperature-based method for the determination of the size of elastoplastic zones. A mathematical model describing the one-dimensional thermal problem of the propagation of a plastic zone is developed enabling the use of nonadiabatic temperature measurements in this role. Validation of the model with numerically generated temperature data has shown the proposed method to yield both accurate and robust estimates for the elastoplastic boundary. An experimental application revealed the method to be efficacious and the estimates for the elastoplastic boundary to agree well with those obtained by finite element analysis.

Copyright © 1997 by The American Society of Mechanical Engineers
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