Ultrasonic characterization of residual stress in materials based on phase-frequency relationship

被引：0
作者：
Chen T. [1 ,2 ]
Xiang Y. [1 ]
Chen H. [3 ]
Xuan F. [1 ]
Chen D. [3 ]
机构：
[1] Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai
[2] East-China Design Branch, China Petroleum Engineering & Construction Corporation, Qingdao
[3] Ningbo Special Equipment Inspection and Research Institute, Ningbo
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2016年 / 52卷 / 22期
关键词：
Phase-frequency relationship; Residual stress; Ultrasonic testing; Welded joints;
D O I：
10.3901/JME.2016.22.009
中图分类号：
学科分类号：
摘要：
To nondestructively test residual stress in materials, a time of flight measurement of ultrasonic propagation is proposed based on phase-frequency relationship and then an ultrasonic characterization of residual stress is developed based on acoustoelasticity, in which a combined measurement of longitudinal and transverse waves are used. The proposed ultrasonic measurement of residual stress can be applied not only to test the residual stress with a dual-directions, but also to make an exquisite measurement of time of sound flight in a short distance. The accuracy can reach to a sensitivity of 0.3 ns for the specimen of 9 mm's length under a stress load of 20 MPa. The proposed method is carried out to measurement the distribution of residual stresses in the welded joints of 16Mn steels. Then, theoretical computations and X-ray diffraction also are used to verify the measured results. The result shows that the proposed ultrasonic method has a good repeatability and reliability in experiments, which can be used to test residual stress for welded joints in two axis directions. © 2016 Journal of Mechanical Engineering.
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页码：9 / 14
页数：5
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