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《Journal of Jiangsu University(Natural Science Edition)》 2011-02
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Sheet metal sizing method based on laser shock wave

Ding Hua1,2,Cai Lan1(1.Center for Photon Manufacturing Science and Technology,Jiangsu University,Zhenjiang,Jiangsu 212013,China;2.School of Automobile and Traffic Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)  
To address the deformation problem of sheet metal generated in assembly process,especially in large or super large pieces of the structure,based on analysis of the characteristics of the traditional sizing method,a new sizing method based on laser shock wave stress was proposed.The principle and the components of the system were described.The test system was built with NA: YAG laser device,and the aluminium sheet with thickness of 0.6 mm was corrected by the system successfully.The influences of the sizing factors were analyzed theoretically.The results show that the sheet resume straight from the state of depression after correction by laser shock,and flatness is less than 0.05 mm.The deformation of the sheetmetal increases with the depth and magnitude of residual stress.To achieve accurate sizing purpose,the deformation of sizing can be adjusted by controlling the laser power density.
【Fund】: 国家自然科学基金资助项目(50775104)
【CateGory Index】: TN249
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