Measurement of Welding Residual Stress by Ultrasonic Technology

Abstract:

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 measurement results was confirmed by H&K theory and XRD methods with good repeatability and reliability.

• Periodical: Applied Mechanics and Materials (Volume 750)
• Pages: 206-213
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.750.206
• Online since: April 2015
• Authors: Hu Chen*, Jin Dan Zhu, Yan Xun Xiang
• Keywords: Nondestructive Testing, Residual Stress, Ultrasonic Method, Weld Joint

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