Page 110 - 《应用声学》2021年第4期

第 40 卷 第 4 期 Vol. 40, No. 4
2021 年 7 月 Journal of Applied Acoustics July, 2021

⋄ 研究报告 ⋄

风电螺栓轴向应力超声测量标定实验研究 ∗

严 勇 1† 刘楚达 2

(1 长沙航空职业技术学院 长沙 410124)
(2 长沙飚能信息科技有限公司 长沙 410205)

摘要：根据超声导波法测量螺栓轴向应力的基本原理，建立了简便有效的声速标定测试实验系统，通过实验分
析了测试系统延时误差和温度误差对不同测试方法测量精度的影响。对 10.9 级 42CrMoA 风电螺栓轴向应力
进行的实际测试表明，超声纵波实际测量误差不大于 ±2%，纵横波联合测量误差不大于 ±5%，完全能满足工
程应用需求，为该技术在风电领域的推广应用奠定了技术基础。
关键词：高强螺栓；超声波；标定实验；纵波；横波
中图法分类号: TB551 文献标识码: A 文章编号: 1000-310X(2021)04-0594-08
DOI: 10.11684/j.issn.1000-310X.2021.04.014

Experimental study on ultrasonic measurement and calibration of
axial stress of wind turbine bolt

YAN Yong 1 LIU Chuda 2

(1 Changsha Aeronautical Vocational and Technical College, Changsha 410124, China)
(2 Changsha Biaoneng Information Technology Co., Ltd., Changsha 410205, China)

Abstract: According to the basic principle of ultrasonic guided wave method to measure the axial stress of
bolts, a simple and effective sound velocity calibration test system is established. The influence of the delay error
and temperature error of the test system on the measurement accuracy of different test methods is analyzed
through experiments. The actual test of 10.9 grade 42CrMoA wind power bolt axial stress shows that the
measurement error of ultrasonic longitudinal wave real method is less than ± 2%, and that of longitudinal and
transverse wave joint measurement is not more than ± 5%, which can fully meet the requirements of engineering
application, and lay a technical foundation for the popularization and application of this technology in the field
of wind power.
Keywords: High strength bolt; Ultrasonic; Calibration testing; Longitudinal wave; Transverse wave

2020-10-27 收稿; 2021-04-07 定稿
湖南省自然科学基金科教联合项目 (2019J70022)
∗
作者简介: 严勇 (1976– ), 男, 湖南长沙人, 副教授, 研究方向: 螺栓轴向应力超声测量。
† 通信作者 E-mail: 15384447@qq.com