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Proceedings Paper

Experimental research on the effects of different overlapping rate in laser shock processing
Author(s): Cheng Wang; Liu Cheng Zhou; Xin Zhou; Qin He; Wei Li
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Paper Abstract

The Samples of a kind of martensite stainless steel treated by LSP with different overlapping rate of laser shock spot were used to study the effects of overlapping rate. The surface residual stress and microhardness of the laser shock zone as well as the fatigue life of the samples with different overlapping rate were tested. The results show that: with the increasing overlapping rate, the overlap interspaces between the practical shock notches on samples reduces. Meanwhile, the fluctuation of residual stress and microhardness is significantly decreased. And the fatigue life of the samples is increased. So the conclusion is drawn that increasing overlapping rate can decrease the overlap interspaces, which optimize the distribution of the residual stress and the microhardness around the shock notches, and consequently improve the fatigue life.

Paper Details

Date Published: 7 October 2010
PDF: 7 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 765523 (7 October 2010); doi: 10.1117/12.866931
Show Author Affiliations
Cheng Wang, Air Force Engineering Univ. (China)
Liu Cheng Zhou, Air Force Engineering Univ. (China)
Xin Zhou, Air Force Engineering Univ. (China)
Qin He, Air Force Engineering Univ. (China)
Wei Li, Air Force Engineering Univ. (China)


Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Yoshiharu Namba; David D. Walker; Shengyi Li, Editor(s)

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