Effect of Laser Shock Processing (LSP) on the Fatigue Resistance of an Aluminum Alloy

[+] Author and Article Information
Tang Yaxin, Zhang Yongkang, Zhang Hong, Yu Chengye

Department of Mechanical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, P.R. China

J. Eng. Mater. Technol 122(1), 104-107 (Mar 10, 1999) (4 pages) doi:10.1115/1.482773 History: Received May 21, 1998; Revised March 10, 1999
Copyright © 2000 by ASME
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Schematic of the LSP process
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Sketch of PVDF transducer
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Stress wave on the front face of PVDF film
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Bi-detail fatigue specimen of 2024T62 Al alloy. All dimensions are in millimeters.
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Hardness distribution in the LSP area of 2024T62
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The microstructure comparison of 2024T62 aluminum alloy before and after LSP. (a) Microscopic photo of 2024T62 before LSP×20 K; (b) Microscopic photo of 2024T62 after LSP×20 K.
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The fatigue fracture of 2024T62. (a) Fracture of LSP specimen×200; (b) fracture of unshocked specimen×200




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