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Evaluation of Welding Residual Stresses Using the Incremental Hole-Drilling Technique

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Abstract:

In this work the reliability of the hole-drilling technique (HDT) for measuring welding residual stresses was analysed. HDT residual stress results were systematically compared with those determined by X-ray diffraction. A systematic overestimation of the residual stresses determined by HDT was observed, which was mainly attributed to the possibility of the so-called plasticity effect occurring. Experimental results were discussed taking the measurement principles of both techniques into consideration. In addition, preliminary results of a numerical study, using the finite element method, will be presented for a better understanding of the plasticity effect on HDT residual stress results.

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

768-773

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.768

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Online since:

May 2006

Authors:

Joao P. Nobre, Altino Loureiro, António Castanhola Batista, A. Morão Dias

Keywords:

Hole-Drilling Method, Welding Residual Stress (WRS), X-Ray Diffraction (XRD)

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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