LAMB WAVE DISPERSION OF PIEZOELECTRIC PLATE UNDER LASER EXCITATION
The dispersion characteristics of a piezoelectric plate under the laser excitation are studied. The LAMB wave dispersion curves of the piezoelectric plate are calculated for both electrically open and closed boundary conditions. It is found that the dispersion curves of LAMB wave are greatly influenced by the electrical boundary. The spectra of the piezoelectric plate under the ablation and thermoelastic laser excitation are also calculated. It is shown that the spectrum is dependent on the type of laser source. Although most modes of the dispersion curves can be generated under the laser excitation, the wave energy of the corresponding modes are quite different for the ablation and thermoelasticexcitation, and this provides the possible theoretical basis for the experimental investigation.
Piezoelectric plate Laser Ultrasonic Spectrum Lamb wave
Gen CHEN Jin-Feng ZHAO Yong-Dong PAN
institute of Acoustics, Tongji University, Shanghai 200092, China School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
国际会议
深圳
英文
498-501
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）