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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 6, Iss. 2 — Feb. 1, 2008
  • pp: 116–119

Laser peening of aluminum alloy 7050 with fastener holes

Shikun Zou, Ziwen Cao, Yong Zhao, and Ming Qian  »View Author Affiliations


Chinese Optics Letters, Vol. 6, Issue 2, pp. 116-119 (2008)


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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.

© 2008 Chinese Optics Letters

OCIS Codes
(320.4240) Ultrafast optics : Nanosecond phenomena
(350.3850) Other areas of optics : Materials processing
(350.5340) Other areas of optics : Photothermal effects

Citation
Shikun Zou, Ziwen Cao, Yong Zhao, and Ming Qian, "Laser peening of aluminum alloy 7050 with fastener holes," Chin. Opt. Lett. 6, 116-119 (2008)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-6-2-116

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