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WU Zhonghua, ZHANG Shiping, SUN Haoyu, ZHU Zheng. Establish of ultrasonic residual stress measurement system based on entire envelope weighting algorithm[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (3): 33-36.
Citation: WU Zhonghua, ZHANG Shiping, SUN Haoyu, ZHU Zheng. Establish of ultrasonic residual stress measurement system based on entire envelope weighting algorithm[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (3): 33-36.
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Establish of ultrasonic residual stress measurement system based on entire envelope weighting algorithm

  • 1.

    College of Mechanical and Electronic Engineering, China University of Petroleum, Dongying 257061, Shandong, China;Drilling Technology Research Institute, Shengli Petroleum Administration Bureau, Dongying 257017, Shandong, China

  • 2.

    School of Electrical Engineering and Automatic, Harbin Institute of Technology, Harbin 150001, China

  • 3.

    Drilling Technology Research Institute, Shengli Petroleum Administration Bureau, Dongying 257017, Shandong, China

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  • Received Date: January 04, 2009
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    • Abstract
  • The entire envelope weighting algorithm is proposed in this paper and realized by virtual instrument to obtain residual stress by ultrasonic measurement. Different weight of reference point is assigned to measure time of echo signal more accurately. Compared with traditional single threshold method, the experiment results show that the algorithm improved the stabilization of repeat measurement at the same point by different conditions. The uncertainty is calculated to validate the accuracy of the ultrasonic measurement.
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