摘要
用超声纵波沿垂直于应力方向对45#钢进行测试,测量其在单轴应力作用下的声速变化。实验结果表明:材料在拉、压单轴应力作用下,超声纵波的声速都发生了变化,声速相对变化率与应力成线性关系。通过本实验提供了一种无损测试材料内部应力的方法。
The ultrasonic longitudinal wave was used to measure the applied stress in 45# steel. Experimental results show that the presence of the stress will cause small changes in phase velocities of the longitudinal wave ,and the velocity will increase with the increasing of the applied stress. Furthermore, the percentage change of the velocity is proportional to the applied stress. This linear relationship provides a practical non-destructive technique for the stress measurement.
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2007年第B12期24-26,共3页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
省重点实验室开放研究基金课题(SJ05046)
关键词
声弹性理论
回振法
应力测试
acousticelasticity
sing-around method
stress measurement
