基于超声纵横波原位法的螺栓预紧力检测研究  

Research on Bolt Pretightening Force Detection Based on Ultrasonic Longitudinal and Transverse Wave in Situ Method

作　　者：刘阳[1] 陈东 范海涛 刘飞 贺瑞敏 LIU Yang;CHEN Dong;FAN Haitao;LIU Fei;HE Ruimin(Inner Mongolia Electric Power(Group)Co.Ltd.,Hohhot 010030,China)

机构地区：[1]内蒙古电力(集团)有限责任公司,内蒙古呼和浩特010030

出　　处：《工业加热》2024年第5期79-84,共6页Industrial Heating

基　　金：内蒙古电力公司2022年科技项目(2022-38)。

摘　　要：针对超声纵横波的螺栓预紧力原位测量精度受几何层面和材料层面因素的影响,通过声弹力学的理论推导,提出了基于形状因子和材料因子的螺栓预紧力超声原位检测模型,并对多种规格、等级、厂商的螺栓的形状因子和材料因子的影响进行试验。结果表明,本测量方法具有较高的拟合度,且可将形状因子λ<0.3作为适用条件。由此得出,通过测量验证了理论推导的正确性,定量地获得了各种因素对测量精度的影响范围,为建立纵横波虚拟标定曲线算法和数据库提供了坚实的基础。In view of the influence of geometric and material factors on the accuracy of bolt preload in-situ measurement of ultrasonic longitudi-nal and transverse waves,it proposes an ultrasonic in-situ measurement model of bolt preload based on form factor and material factor through theoretical derivation of acoustic elasticity,and tests the influence of form factor and material factor of bolts of various specifications,grades and manufacturers.The results show that this measurement method has a high degree of fit,and can reduce the form factorλ<0.3 as appli-cable conditions.It is concluded that the correctness of theoretical derivation is verified through measurement,and the influence range of vari-ous factors on measurement accuracy is quantitatively obtained,which provides a solid foundation for establishing a virtual calibration curve al-gorithm and database for longitudinal and transverse waves.

关 键 词：超声纵横波原位法 材料因子 螺栓预紧力 声弹力学理论 

分 类 号：TG4[金属学及工艺—焊接]