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RESEARCH PAPERS

The Compliance Method for Measurement of Near Surface Residual Stresses—Application and Validation for Surface Treatment by Laser and Shot-Peening

[+] Author and Article Information
W. Cheng, I. Finnie

Mechanical Engineering Department, University of California, Berkeley, Berkeley, CA, 94720

M. Gremaud

Departement des Matériaux, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

A. Rosselet

Mechanical Technology, Sulzer-Innotec, 8401 Winterthur, Switzerland

R. D. Streit

Lawrence Livermore National Laboratory, Livermore, CA 94550

J. Eng. Mater. Technol 116(4), 556-560 (Oct 01, 1994) (5 pages) doi:10.1115/1.2904328 History: Received May 20, 1993; Revised June 01, 1993; Online April 29, 2008

Abstract

Residual stresses due to surface treatment are measured using the compliance method. The method makes use of the strains measured on the surface while a cut is extended progressively along a plane of interest. The experimental results for a shot peened specimen show good agreement with those obtained by the X-ray method. This experiment demonstrates that the compliance method is accurate and capable of measuring residual stresses which vary rapidly over a depth of less than 50 μm. Good general agreement with results by the X-ray method is also obtained for a laser treated specimen. Some advantages and disadvantages of the present method relative to hole-drilling, layer removal and X-ray methods are discussed.

Copyright © 1994 by The American Society of Mechanical Engineers
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