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Article
Determining Plastic Properties of a Material with Residual Stress by Using Conical Indentation
International Journal of Solids and Structures
  • J. Yan, University of Delaware
  • Anette M Karlsson, Cleveland State University
  • X. Chen, Columbia University
Document Type
Article
Publication Date
6-1-2007
Abstract

Instrumented indentation is a popular method for determining mechanical properties in engineering materials. However, there are several shortcomings and challenges involved with correctly interpreting the test results. We propose here a unified method for evaluating instrumented indentation testing conducted on a material that exhibits both strain hardening under yielding and which is subjected to uniform, equi-biaxial residual stresses. The proposed method is based on extensive finite element simulations that relate the parameter-space spanned by Young’s modulus, yield strength, strain hardening and residual stress, to the response from the indentation test. Based on reverse analysis, the proposed method can be used to determine two unknown quantities, such as yield strength and strain hardening. The technique involves utilizing the concept of representative strain and plural indenter-shapes.

DOI
10.1016/j.ijsolstr.2006.10.017
Version
Postprint
Citation Information
Yan, J., Karlsson, A. M., and Chen, X., 2007, "Determining Plastic Properties of a Material with Residual Stress by using Conical Indentation," International Journal of Solids and Structures, 44(11-12) pp. 3720-3737.