期刊
PROCEEDINGS OF THE 2015 ICU INTERNATIONAL CONGRESS ON ULTRASONICS
卷 70, 期 -, 页码 594-598出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.phpro.2015.08.030
关键词
Residual stress; Ultrasonic; Nondestructive testing
Residual stress has significant impacts on the performance of the mechanical components, especially on its strength, fatigue life and corrosion resistance and dimensional stability. Based on theory of acoustoelasticity, the testing principle of ultrasonic L-CR wave method is analyzed. The testing system of residual stress is build. The method of calibration of stress coefficient is proposed in order to improve the detection precision. At last, through experiments and applications on residual stress testing of oil pipeline weld joint, vehicle's torsion shaft, glass and ceramics, gear tooth root, and so on, the result show that it deserved to be studied deeply on application and popularization of ultrasonic L-CR wave method.
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