空心抽油杆的超声导波检测  

Ultrasonic Inspection of Hollow Sucker Rod by Guided Waves

作　　者：何存富[1] 李颖[1] 吴斌[1] 李隆涛[1] 王秀彦[1] 

机构地区：[1]北京工业大学机电学院,北京100022

出　　处：《无损检测》2005年第10期538-541,共4页Nondestructive Testing

基　　金：国家自然科学基金资助项目(19972003;10272007);北京市自然科学基金重点资助项目(3011001);北京市优秀人才培养专项经费资助项目

摘　　要：利用超声纵向导波对抽油杆缺陷进行检测。将空心抽油杆简化为一管状波导,利用管道中的导波频散曲线,并结合抽油杆的缺陷检测要求,设计出适合抽油杆缺陷检测的传感器,选择合适的导波模态对抽油杆表面上宽1 mm、深1 mm的周向槽进行检测,试验结果表明将抽油杆简化为管状波导是可行的,利用设计的环状传感器激发出纵向轴对称L(0,2)导波模态,有效检出了抽油杆表面的缺陷。The defect in a hollow sucker rod were detected by longitudinal guided waves. A hollow sucker rod was simplified to be a eannular wave-guide Meanwhile, a transducer which was suitable for detecting the defect in a sucker rod was designed according to the disperse curves of the guided waves in a pipe and the requirements of detecting the defect in a sucker rod. Then a circumferential notch with lmm width and lmm depth was detected by suitable guided wave mode It was shown by experiment that the method was feasible The defect in a sucker rod was effectively detected with the axisyrnmetrieal longitudinall mode L（0, 2） generated by the transducer designed.

关 键 词：超声检测 导波 抽油杆 纵向模态 频散曲线 传感器 

分 类 号：TG115.28[金属学及工艺—物理冶金]