Temperature correction of bolt axial stress test by transverse and longitudinal wave method
-
摘要: 根据声弹性原理和胡克定律推导了纵波法和横纵波法的螺栓轴向应力测量公式,探究了纵波法和横纵波法对温度变化的敏感性差异,推导了横纵波法的温度修正模型,并通过试验验证了该模型的精度。结果表明,相比纵波法,横纵波法受温度影响较小,纵波法对温度变化的敏感性约为横纵波法的2倍。Abstract: Based on the principles of acoustoelastic principle and Hooke's law, the axial stress measurement formulas for bolts using longitudinal wave method and transverse longitudinal wave method were derived. The sensitivity differences between longitudinal wave method and transverse longitudinal wave method to temperature changes were explored, and a transverse longitudinal wave temperature correction model was derived. The accuracy of the model was verified through experiments. The research shows that the transverse and longitudinal wave method is less affected by temperature than the longitudinal wave method, and the sensitivity of the longitudinal wave method to temperature changes is about twice that of the transverse and longitudinal wave method.
-
-
[1] 陆益锋. 在役电机螺栓超声检测技术研究[D]. 上海:华东理工大学, 2012. [2] 王涛, 罗毅, 刘绍鹏, 等. 基于压电主动传感方式的螺栓松动检测实验研究[J]. 传感技术学报, 2013, 26(8):1059-1063. [3] 徐春广, 李骁, 潘勤学, 等. 螺栓拉应力超声无损检测方法[J]. 应用声学, 2014(2):102-106. [4] 张俊. 基于声弹性原理的超声波螺栓紧固力测量技术研究[D]. 杭州:浙江大学, 2005. [5] CRECRAFT D I. Ultrasonic measurement of stresses[J]. ultrasonics, 1968, 6(2):117-121.
[6] 江泽涛, 朱士明.纵横波测已紧固螺栓轴向应力[J].应用声学, 2000(1):16-21. [7] 贾雪. 声弹性效应螺栓轴向应力标定试验研究[J]. 中国测试, 2018, 44(3):23-27.
计量
- 文章访问数: 6
- HTML全文浏览量: 1
- PDF下载量: 8