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

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2005 (2)

Y. Zhang, T. Ge, and J. Lu, J. Jiangsu University (Natural Science Edition) (in Chinese) 26, 369 (2005).

R. A. Pell, P. J. Mazeika, and L. M. Lent, Eng. Failure Anal. 12, 586 (2005).

2004 (2)

S. Zou, Y. Tan, D. Guo, S. Wang, and H. Wu, Chin. J. Lasers (in Chinese) 31, 270 (2004).

S. Zou, Y. Tan, D. Guo, S. Wang, and H. Wu, Chin. J. Lasers (in Chinese) 31, (Suppl.) 371 (2004).

2001 (1)

J.-M. Yang, Y. C. Her, N. Han, and A. Clauer, Mater. Sci. and Eng. A 298, 296 (2001).

2000 (1)

S. Zou, J. Wang, Y. Zhao, and S. Xiao, Appl. Laser Technol. (in Chinese) 20, 255 (2000).

Appl. Laser Technol. (in Chinese) (1)

S. Zou, J. Wang, Y. Zhao, and S. Xiao, Appl. Laser Technol. (in Chinese) 20, 255 (2000).

Chin. J. Lasers (in Chinese) (2)

S. Zou, Y. Tan, D. Guo, S. Wang, and H. Wu, Chin. J. Lasers (in Chinese) 31, 270 (2004).

S. Zou, Y. Tan, D. Guo, S. Wang, and H. Wu, Chin. J. Lasers (in Chinese) 31, (Suppl.) 371 (2004).

Eng. Failure Anal. (1)

R. A. Pell, P. J. Mazeika, and L. M. Lent, Eng. Failure Anal. 12, 586 (2005).

J. Jiangsu University (Natural Science Edition) (in Chinese) (1)

Y. Zhang, T. Ge, and J. Lu, J. Jiangsu University (Natural Science Edition) (in Chinese) 26, 369 (2005).

Mater. Sci. and Eng. A (1)

J.-M. Yang, Y. C. Her, N. Han, and A. Clauer, Mater. Sci. and Eng. A 298, 296 (2001).

Other (2)

Q. Liu, K. Ding, L. Ye, C. Rey, S. A. Barter, P. K. Sharp, and G. Clark, in Proceedings of International Conference on Structural Integrity and Fracture 235 (2004).

A. H. Clauer, J. L. Dulaney, and R. C. Rice, Durability of Metal Structures,1992 Atlanta Tech. Publ. International Workshop on Structural Integrity of Aging Airplanes Atlanta, GA, Mar.31-Apr.2, 350 (1992).

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