• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

机械工程学报 ›› 2016, Vol. 52 ›› Issue (22): 9-14.doi: 10.3901/JME.2016.22.009

• 仪器科学与技术 • 上一篇    下一篇

扫码分享

基于相位-频率测量的材料残余应力超声表征方法*

陈天瑞1，2, 项延训1, 陈虎3, 轩福贞1, 陈定岳3   

  1. 1. 华东理工大学承压系统与安全教育部重点实验室 上海 200237;
    2. 中国石油工程建设公司华东设计分公司 青岛 266001
    ; 3. 宁波市特种设备检验研究院 宁波 315103
  • 出版日期:2016-11-15 发布日期:2016-11-15
  • 作者简介:陈天瑞，男，1988年出生。主要研究方向为残余应力的超声波无损检测。E-mail：terrychen821@163.com项延训(通信作者)，男，1979年出生，博士，副教授。主要研究方向为化工过程机械的超声检测与评价。E-mail：yxxiang@ecust.edu.cn
  • 基金资助:
    * 国家自然科学基金资助项目(11474093， 11622430); 20151201收到初稿，20160912收到修改稿;

Ultrasonic Characterization of Residual Stress in Materials Based on Phase-frequency Relationship

CHEN Tianrui1，2, XIANG Yanxun1, CHEN Hu3, XUAN Fuzhen1, CHEN Dingyue3   

  1. 1. Key Laboratory of Pressure Systems and Safety of Ministry of Education，East China University of Science and Technology， Shanghai 200237, 2. East-China Design Branch， China Petroleum Engineering & Construction Corporation， Qingdao 266001, 3. Ningbo Special Equipment Inspection and Research Institute， Ningbo 315103
  • Online:2016-11-15 Published:2016-11-15

PDF

217

摘要：

针对材料中残余应力无损检测的问题，提出一种基于相位-频率关系测量超声信号传播时间的方法，并以声弹性理论为基础，采用纵波和横波相结合的测量模式，建立残余应力的超声测量方法。该超声测量方法应用于焊接接头的残余应力测量，不仅能够表征两轴方向上的残余应力，而且还适用于短距离声时的精确测量，测量精度达到9 mm试样距离上0.3 ns的分辨率(加载应力为20 MPa)。制作16Mn钢材料的焊接接头，并采用所提出的超声测量方法对焊接接头的残余应力分布进行测量。同时，采用理论计算、X射线衍射技术等分别对16Mn钢材料的声弹性参数及焊接接头残余应力分布进行验证测量。研究结果表明基于相位-频率精确测量声时的残余应力超声测量方法具有较高的应力分辨率和较好的测量稳定性，可适用于焊接接头两轴方向上的残余应力表征。

关键词: 残余应力, 焊接接头, 相位-频率关系, 超声检测

Abstract:

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.

Key words: phase-frequency relationship, residual stress, welded joints, ultrasonic testing

版权所有 © 2019 《机械工程学报》编辑部 | 京ICP备05055788号-30