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Chin. Opt. Lett.
 Home  List of Issues    Issue 02 , Vol. 06 , 2008    Laser peening of aluminum alloy 7050 with fastener holes


Laser peening of aluminum alloy 7050 with fastener holes
Shikun Zou1, Ziwen Cao1, Yong Zhao2, Ming Qian3
1[Beijing Aeronautical Manufacturing Technology Research Institute], Beijing 10024

2[Chengdu Aircraft Design &
Research Institute], Chengdu 610041

3Institute of Laser Engineering, [Beijing University of Technology], Beijing 100080

Chin. Opt. Lett., 2008, 06(02): pp.116-119-4

DOI:
Topic:Other areas of optics
Keywords(OCIS Code): 350.3850  350.5340  320.4240  

Abstract
The fatigue properties of laser peened aluminum alloy 7050 specimens with fastener holes were investigated. The surface profile and residual stress induced in the shock affected zone were characterized. Then, the fatigue specimens with notch were treated by laser peening (LP), and the fatigue lifes of LP-treated specimens were measured and compared with base materials without LP. The results indicated that LP improved the fatigue lifes of all tested specimens. The average fatigue lifes of specimens treated by LP before hole-drilling were 173% longer than those of untreated samples and had better effects than those specimens treated by LP after hole-drilling.

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Received:2007/6/5
Accepted:
Posted online:

Get Citation: Shikun Zou, Ziwen Cao, Yong Zhao, Ming Qian, "Laser peening of aluminum alloy 7050 with fastener holes," Chin. Opt. Lett. 06(02), 116-119-4(2008)

Note: S. Zou's e-mail address is zousk@sina.com.



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