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介绍了磁致伸缩技术的基本原理,并研制基于磁致伸缩导波技术的缆索无损检测设备。对设备中的3大系统:激励信号发生系统、功率放大系统和导波检测系统进行说明,并分析采用设备进行缆索损伤定位的原理。设计制作带缺陷试验缆索进行大量检测试验,对检测数据进行细致分析,结果表明:磁致伸缩技术和研制的无损检测设备可较好地实现缆索损伤定位;传感器无需通过缺陷部位,远距离即可检测出缺陷,导波检测精度与缺陷和传感器之间距离有关,在导波检测范围内,传感器越靠近缺陷,检测精度越高。
The basic principle of magnetostrictive technology is introduced, and a cable nondestructive testing device based on magnetostrictive guided wave technology is developed. Three systems in the equipment: excitation signal generation system, power amplification system and guided wave detection system are described, and the principle of using equipment for cable damage positioning is analyzed. Design and manufacture of test cables with defects for a large number of tests, the test data for a detailed analysis of the results show that: magnetostrictive technology and the development of nondestructive testing equipment can be better cable damage positioning; sensor without the defect through the site, long distance Detected defects, guided wave detection accuracy and defect and the distance between the sensors in the guided wave detection range, the sensor closer to the defect, the higher the detection accuracy.