摘要
针对中华山项目组16号机位风电组塔筒基础下端段高强度螺栓,采取不拆卸状态下轴向紧固力检测,首先根据超声波应力检测原理,建立函数模型关系,针对同材质的高强度42CrMo螺栓进行声弹系数标定实验,通过测量空载和加载状态的横纵波声时值得到声弹性系数,基于实验得到的声弹性数据,在现场运用超声波螺栓应力检测仪进行现场试验,记录试验结果。实验表明该检测方法能够有效、快速、且准确地测算出螺栓紧固轴向力,且更加易于操作。
Aiming at the high-strength bolts at the bottom end of the tower foundation of the Zhonghuashan Project Unit No.16 wind power unit,the axial tightening force is measured without disassembly.First,according to the principle of ultrasonic stress detection,a function model relationship is established,and the relationship is based on the same material.The high-strength 42CrMo bolts are subjected to the acoustoelastic coefficient calibration experiment.The acoustoelastic coefficient is obtained by measuring the acoustic time values of transverse and longitudinal waves in the unloaded and loaded state.Based on the acoustoelastic data obtained from the experiment,the ultrasonic bolt stress detector is used for field test and record The test results show that the detection method can effectively,quickly and accurately measure the bolt tightening axial force,and it is easier to operate.
作者
王健
黄桥生
曾江卓
代家昆
黄鑫
Wang Jian;Huang Qiao-sheng;Zeng Jiang-zhuo;Dai Jia-kun;Huang Xin
出处
《电力系统装备》
2021年第22期91-92,共2页
Electric Power System Equipment
关键词
风电塔筒
高强度螺栓
超声波检测
声弹系数
wind turbine tower
high-strength bolts
ultrasonic testing
acoustic elasticity coefficient
