TITLE

Improvement of the Contour Method for Measurement of Near-Surface Residual Stresses from Laser Peening

AUTHOR(S)
Toparli, M.; Fitzpatrick, M.; Gungor, S.
PUB. DATE
November 2013
SOURCE
Experimental Mechanics;Nov2013, Vol. 53 Issue 9, p1705
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A study was conducted to develop a methodology to obtain near-surface residual stresses for laser-peened aluminium alloy samples using the contour method. After cutting trials to determine the optimal cut parameters, surface contours were obtained and a new data analysis method based on spline smoothing was applied. A new criterion for determining the optimal smoothing parameters is introduced. Near-surface residual stresses obtained from the contour method were compared with X-ray diffraction and incremental hole drilling results. It is concluded that with optimal cutting parameters and data analysis, reliable near-surface residual stresses can be obtained by the contour method.
ACCESSION #
91570887

 

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