理化检验-物理分册2025，Vol.61Issue(9)：31-35,76,6.DOI:10.11973/lhjy-wl250136
热轧钢板超声波残余应力测试影响因素
Influencing factors of ultrasonic residual stress test of hot rolled steel plate
摘要
Abstract
The accuracy of ultrasonic residual stress testing was affected by many factors,which limited the further promotion of this technology.The effects of surface oxide scale,coupling agent type,coupling agent film thickness,equipment accuracy and tester operation difference on the test results were systematically studied,and the effectiveness of the optimization measures was verified by comparative tests.The results show that the method of removing surface oxide scale and floating ash by sandpaper could significantly improve the test accuracy.The use of oil as a coupling agent not only had good rust resistance,but also provided excellent coupling effect.When the thickness of the coupling agent film was controlled at 0.5-1.0 mm,the discreteness of the residual stress test data was only 5%.When the sound velocity measurement accuracy of the device was increased from 1 ns to 0.2 ns,the standard deviation of the single-point repeatability test could be controlled in the range of-5-5 MPa.关键词
超声波/残余应力/热轧钢板/影响因素/测试精度Key words
ultrasonic/residual stress/hot rolled steel plate/influencing factor/test accuracy分类
矿业与冶金引用本文复制引用
刘冬,蔡海斌,闻臻,杜丽影,王立新,魏海丽,朱岩..热轧钢板超声波残余应力测试影响因素[J].理化检验-物理分册,2025,61(9):31-35,76,6.基金项目
广东省基础与应用基础研究基金海上风电联合基金(2023B1515250006) （2023B1515250006）
