Theoretical and experimental research on controlling guided waves propagation direction in pipes

摘要：

The theoretical formula of guided waves propagation direction in pipes is derived. The single direction propagation of ultrasonic guided waves in pipes are numerical simulated and experimented by setting up the gap length between magnetostrictive sensors with λ/4 and 3λ/4, and the phase difference of two excitation channels with π/2, -π/2 , respectively. The research results show that, when two excitation channels condition are thoroughly the same, and the gap length between two excitation sensors is an odd multiple of λ/4 and the phase difference between two excitation channels is an odd multiple of π/2 , guided waves single direction propagation will be achieved. This conclusion is consistent with the results of the theoretical formula derived, numerical simulation and experiment by done.

关键词： guided waves direction control propagation pipes

作者: Wang Yuemin Shen Lihua Shen Chuanjun Sun Fengrui

作者单位: College of Architecture and Power,Naval University of Engineering,Wuhan 430033,China

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 28-32

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）