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.
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- Contour method
- Near-surface residual stresses
- Bivariate spline smoothing
- X-ray diffraction
- Laser peening
Torpali, M. B., Fitzpatrick, M. E., & Gungor, S. (2013). Improvement of the Contour Method for Measurement of Near-Surface Residual Stresses from Laser Peening. Experimental Mechanics, 53(9), 1705-1718. https://doi.org/10.1007/s11340-013-9766-x