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RESEARCH PAPERS

Nondestructive Measurement of Welding Residual Stresses by Acousto-Elastic Technique and Prediction of Fatigue Crack Growth

[+] Author and Article Information
H. Kobayashi, Y. Arai, Y. Ohsawa, H. Nakamura, A. Todoroki

Department of Mechanical Engineering Science, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan

J. Pressure Vessel Technol 114(4), 417-421 (Nov 01, 1992) (5 pages) doi:10.1115/1.2929248 History: Received July 12, 1991; Online June 17, 2008

Abstract

Nondestructive measurements of residual stresses were successfully attempted by the acoustoelastic technique on butt-welded joints of a carbon steel for nuclear piping. Usefulness of the technique considering the effect of the material anisotropy is emphasized. Based on the measured residual stresses, predictions of the fatigue crack growth were done using the superposition technique. It is shown that predictions agree well with experiments. The effect of the accuracy in residual stress measurements on the predictions is also included.

Copyright © 1992 by The American Society of Mechanical Engineers
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