Numerical and experimental evaluation of ultrasonic wave propagation characteristics at contact interface

被引:4
作者
Suzuki, A [1 ]
Biwa, S
Ohno, N
机构
[1] Toyota Cent Res & Dev Labs Inc, Res Domain 13, Mech Engn Dept, Nagakute, Aichi 4801192, Japan
[2] Kyoto Univ, Grad Sch Energy Sci, Dept Energy Convers Sci, Sakyo Ku, Kyoto 6068501, Japan
[3] Nagoya Univ, Dept Computat Sci & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
关键词
ultrasonic wave; contact interface; phase velocity; interface stiffness; contact pressure; finite difference method; PMMA; nondestructive evaluation;
D O I
10.1299/jsmea.48.20
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
As a background of the ultrasonic characterization of contact interfaces, ultrasonic wave propagation characteristics at contacting solid surfaces have been studied numerically and experimentally. The wave propagation along the contact interface has been simulated by the two-dimensional finite difference method, assuming a spring-type interface with normal and tangential stiffnesses. The analysis has verified that the antisymmetric-mode interface wave can be generated by the shear excitation at one end of the interface, and its phase velocity can be evaluated with good accuracy from the waveform received at the other end. Measurement of the phase velocity of the interface wave has been carried out for contacting PMMA surfaces under different contact pressures, together with the shear-wave reflection measurement to evaluate the interface tangential stiffness. The measured relation between the phase velocity and the tangential stiffness has been shown to agree well with the theoretical relation for the antisymmetric-mode interface wave.
引用
收藏
页码:20 / 26
页数:7
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