Measurement of Welding Residual Stress by Ultrasonic Technology

  title={Measurement of Welding Residual Stress by Ultrasonic Technology},
  author={Hu Chen and Jin Dan Zhu and Yan Xiang},
An ultrasonic method was developed to measure the residual stress in a welded joint based on the modified acoustic-elasticity theory. Phase frequency analysis method was introduced by incombination with shear wave and longitudinal wave. The acoustic-elasticity parameters of joint material was derived by ultrasonic inspection during loading experiment. Transverse and longitudinal residual stress was determined by precisely measuring of short-distance acoustic travel time. The ultrasonic… CONTINUE READING

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