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Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli

Publication ,  Journal Article
Guan, YJ; Sun, HX; Yuan, SQ; Ge, Y; Xia, JP
Published in: Wuli Xuebao/Acta Physica Sinica
November 20, 2016

Taking into account the gradient change of the near-surface viscous property, we develop a finite element model of laser-generated surface acoustic wave in composite plate. The propagation characteristics of the surface acoustic wave in the composite plate are studied in detail, and the influences of the near-surface viscous modulus, thickness, and Lamé constant on the attenuation characteristics of the surface acoustic wave are discussed. In addition, the propagation characteristics of the surface acoustic wave are verified by the theoretical calculations of the dispersion and attenuation curves. The results show that the near-surface viscous modulus and thickness are related to the attenuations of the surface shear wave and the Rayleigh wave, but have no influence on the propagation velocity. Furthermore, the imaginary part of the Lamé constant μ has great influence on the attenuations of the surface shear wave and the Rayleigh wave, whereas the imaginary part of λ has no effect on the attenuation characteristics of the two waves, which indicates that the attenuation of the surface acoustic wave is related to the near-surface shear viscous modulus. The study gives theoretical basis for evaluating the near-surface mechanical properties of the composite plates by the laser ultrasound technique. Besides, it provides a feasible way to study the surface micro-cracks on the composite plates.

Duke Scholars

Published In

Wuli Xuebao/Acta Physica Sinica

DOI

ISSN

1000-3290

Publication Date

November 20, 2016

Volume

65

Issue

22

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Guan, Y. J., Sun, H. X., Yuan, S. Q., Ge, Y., & Xia, J. P. (2016). Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli. Wuli Xuebao/Acta Physica Sinica, 65(22). https://doi.org/10.7498/aps.65.224201
Guan, Y. J., H. X. Sun, S. Q. Yuan, Y. Ge, and J. P. Xia. “Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli.” Wuli Xuebao/Acta Physica Sinica 65, no. 22 (November 20, 2016). https://doi.org/10.7498/aps.65.224201.
Guan YJ, Sun HX, Yuan SQ, Ge Y, Xia JP. Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli. Wuli Xuebao/Acta Physica Sinica. 2016 Nov 20;65(22).
Guan, Y. J., et al. “Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli.” Wuli Xuebao/Acta Physica Sinica, vol. 65, no. 22, Nov. 2016. Scopus, doi:10.7498/aps.65.224201.
Guan YJ, Sun HX, Yuan SQ, Ge Y, Xia JP. Propagation characteristics of laser-generated surface acoustic waves in composite plate with gradient changes of near-surface viscous moduli. Wuli Xuebao/Acta Physica Sinica. 2016 Nov 20;65(22).

Published In

Wuli Xuebao/Acta Physica Sinica

DOI

ISSN

1000-3290

Publication Date

November 20, 2016

Volume

65

Issue

22

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences