Experimental study of the T(0,1)-wave excitation method based on a buffer waveguide
SUN Feiran1, DING Yulin1, SUN Zhenguo1,2, CHEN Qiang1,2, MURAYAMA Riichi3
1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2. Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China; 3. Department of Intelligent Mechanical Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
Abstract：This paper presents an experimental study of the T(0,1) mode guided wave excitation method for a buffer waveguide wrapped around a pipe which has been proposed to overcome the main challenge in online inspection of high-temperature pipelines. The dispersion curve was analyzed in tests to show that the T(0,1) mode guided wave can be excited in the pipe by exciting the S0 mode Lamb wave in the buffer waveguide with a meander-line coil EMAT to generate the S0-wave and a PPM EMAT to detect the T(0,1)-wave. Tests indicate that the T(0,1)-wave can be converted from the S0-wave by the buffer waveguide, which verifies the validity of this method as a foundation for engineering applications.
孙斐然, 丁雨林, 孙振国, 陈强, MURAYAMA Riichi. 基于缓冲波导的T(0,1)模态导波激励方法实验研究[J]. 清华大学学报（自然科学版）, 2018, 58(8): 740-745.
SUN Feiran, DING Yulin, SUN Zhenguo, CHEN Qiang, MURAYAMA Riichi. Experimental study of the T(0,1)-wave excitation method based on a buffer waveguide. Journal of Tsinghua University(Science and Technology), 2018, 58(8): 740-745.
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2018, Vol. 58 
