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LU Hao, ZHANG Shiping, LIU Xuesong, YANG Jianguo, FANG Hongyuan. Establishment of longitudinal twin wire welding residual stress gradient of 2219 aluminum alloy plate by ultrasonic method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (2): 61-64.
Citation: LU Hao, ZHANG Shiping, LIU Xuesong, YANG Jianguo, FANG Hongyuan. Establishment of longitudinal twin wire welding residual stress gradient of 2219 aluminum alloy plate by ultrasonic method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (2): 61-64.
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Establishment of longitudinal twin wire welding residual stress gradient of 2219 aluminum alloy plate by ultrasonic method

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    State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China

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  • Received Date: April 28, 2007
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  • The acoustoelasticity equations were deduced by means of the infinitesimal wave propagation in a deformed isotropic elastic material.The equations were simplified in the longitudinal critically refracted waves expression.Ultrasonic stress measurement installation was established with a special transducer and an oscillograph with special higher digitizer board.Longitudinal critically refracted wave which is sensitive to stress variation was selected as the measuring wave.Longitudinal residual stress gradient of 2219 aluminum alloy was obtained in the ultrasonic travel time change expression formal.The tendency was compared with the numerical simulation results obtained by Marc software.Preparation for longitudinal residual stress field of 2219 aluminum alloy butt-welded steel plate was made.
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