激光冲击处理对铝合金疲劳扩展速率影响的研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1999, Vol. 20 ›› Issue (1): 62-64.

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EFFECTS OF LASER SHOCK PROCESSING ON THE FATIGUE CRACK GROWTH RATES OF ALUMINIUM ALLOY

Zhang Hong¹, Yu Chengye²

1. Laser Processing laboratory, Department of Mechanical Engineering, Changchun Institute of Optics and Fine Mechanics, Changchun, 130022 ;2. Faculty 502, Nanjing University of Aeronautics and Astronautics, Na

Received:1998-02-20 Revised:1998-06-12 Online:1999-02-25 Published:1999-02-25

Abstract

Abstract:

This paper investigates the effects of laser shock processing (LSP) on the fatigue crack growth rates (FCGRs) of 2024 T62 aluminium alloy and the feasibility of LSP used as crack arrest technology. The fatigue crack growth test results show that the FCGRs of 2024 T62 aluminium alloy are retarded significantly after LSP, which reveals that arresting crack by LSP is pratical.

Key words: laser shock processing, fat igue cr ack growth, cra ck ar rest, aluminium alloy

CLC Number:

Zhang Hong;Yu Chengye. EFFECTS OF LASER SHOCK PROCESSING ON THE FATIGUE CRACK GROWTH RATES OF ALUMINIUM ALLOY[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1999, 20(1): 62-64.

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EFFECTS OF LASER SHOCK PROCESSING ON THE FATIGUE CRACK GROWTH RATES OF ALUMINIUM ALLOY

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