There are three modes for ultrasonic guided wave to propagate in the pipeline:longitudinal, torsional and flexural waves. The ultrasonic guided wave nondestructive detection is widely used in the pipeline, due to its non-dispersion characteristics. But it is often accompanied with the appearance of longitudinal wave when the torsional waves are stimulated in the pipeline, which leads to difficulties in identifying and analyzing the signal. To inhibit the generation of longitudinal wave, it's helpful to calculate the ultrasonic wave propagation dispersion curve of the pipeline, and control the torsional wave excitation frequency in longitudinal wave cutoff frequency range. In order to verify the effectiveness and correctness of the method, a series of experiments on different excitation frequency of pipeline were made, basing on magnetostrictive guided wave nondestructive testing device. The experimental results coincide with the theoretical conclusions, and this method provides a very important theoretical basis and guidance for the identification and engineering application of guided wave nondestructive testing signal.
WANG Yuemin
,
DENG Wenli
,
GENG Haiquan
,
CHEN Le
,
YE Wei
. Influence of Ultrasonic Guided Wave Excitation Frequency on the Mode Control[J]. Journal of Mechanical Engineering, 2017
, 53(24)
: 104
-109
.
DOI: 10.3901/JME.2017.24.104
[1] KIM Y Y, KWON Y E. Review of magnetostrictive patch transducers and applications in ultrasonic nondestructive testing of waveguides[J]. Ultrasonics, 2015, 62:3-19.
[2] 王悦民, 沈立华, 申传俊, 等. 管道导波无损检测频率选择与管材特征关系[J]. 机械工程学报, 2009, 45(8):243-248. WANG Yuemin, SHEN Lihua, SHEN Chuanjun, et al. Relationship between frequency selection and pipe characteristics for guided waves NDT[J]. Journal of Mechanical Engineering, 2009, 45(8):243-248.
[3] 他得安, 刘镇清, 贺鹏飞. 充粘液管材中超声纵向导波的无损检测参数选择[J]. 声学学报, 2004, 29(2):104-110. TA Dean, LIU Zhenqing, HE Pengfei. Optimal Parameters of ultrasonic guided waves non-destructive testing in viscous liquid-filled elastic pipes[J]. Acta Acustica, 2004, 29(2):104-110.
[4] 何存富, 杨士明, 吴斌, 等. 管道中激励和接收扭转模态导波专用探头的研制与应用[J]. 无损检测, 2005, 27(12):621-623. HE Cunfu, YANG Shi ming, WU Bin, et al. Development and application of the special transducers for exciting and receiving torsional mode guided waves in pipes[J]. Nondestructive Testing, 2005, 27(12):621-623.
[5] JILES D C. Theory of the magnetomechanical effect[J]. Journal of Physics D Applied Physics, 1995, 28(8):1537.
[6] KWUN H. Method and apparatus generating and detecting torsional wave inspection of pipes or tubes[P]. USA:6429650 B1, 2002.
[7] KIM Y Y, CHAN I P, CHO S H, et al. Torsional wave experiments with a new magnetostrictive transducer configuration[J]. Journal of the Acoustical Society of America, 2005, 117(6):3459-3468.
[8] ROSE J L. Ultrasonic waves in solid media[M]. Cambridge University Press, 1999.
[9] 曹正敏, 林莉, 李喜孟. 兰姆波频散曲线的绘制与试验验证[J]. 理化检验:物理分册, 2008(9):482-484 CAO Zhengmin, LIN Li, LI Ximeng. Plotting and experimental validation of lamb wave dispersion curve[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2008(9):482-484
[10] KWUN H, BARTELS K A. Experimental observation of wave dispersion in cylindrical shells via time-Frequency analysis[J]. Journal of the Acoustical Society of America, 1995, 97(6):3905-3907.
[11] 王冰, 徐鸿, 刘鹏程. 超声导波模态识别方法比较[J]. 无损检测, 2009, 31(6):438-441. WANG Bing, XU Hong, LIU Pengcheng. Comparison of mode identification methods for ultrasonic guided waves[J]. Nondestructive Testing, 2009, 31(6):438-441.
