磁致伸缩超声导波管道检测传感器研究进展

Review of Magnetostrictive Transducers in Pipe Ultrasonic Guided Waves Testing

超声导波无损检测技术因其使用频率低、传播距离远和信号衰减小等特点,可以实现高效率、非接触、长距离和大范围的管道缺陷检测,受到国内外学者的广泛青睐与关注。在介绍磁致伸缩物理特性和磁致伸缩超声导波传感器检测原理的基础上,从制作超声导波传感器的磁致伸缩材料和传感器的结构设计与优化两方面,综述了磁致伸缩超声导波传感器的研究现状,并对其发展趋势进行了展望。

Ultrasonic guided wave nondestructive testing technology can achieve high-efficiency, non-contact, long-distance, and large-scale pipe defect detection for its low frequency, long propagation distance and low signal attenuation, which has been widely favored and concerned by scholars at home and abroad.On the basis of introducing the physical characteristics of magnetostriction and the detection principle of magnetostriction ultrasonic guided wave sensor, the research status of magnetostrictive ultrasonic guided wave sensor is reviewed from two aspects, the fabrication of ultrasonic guided wave magnetostrictive materials and the design and optimization of sensor structure, and its development trend is prospected.