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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. S1 — Aug. 28, 2005
  • pp: S308–S310

Numerical simulation of laser-generated Lamb wave by finite element method in thin transversely isotropic laminate composite

Jijun Wang, Zhonghua Shen, Baiqiang Xu, Xiaowu Ni, Jianfei Guan, and Jian Lu  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue S1, pp. S308-S310 (2005)


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Abstract

Laser ultrasound is a technique based on lasers to generate and detect ultrasound remotely. The thermal expansion arising from the optical absorption of a short laser pulse generates ultrasonic wave. By using finite element method, this study presents a source model for laser ultrasonic generation in thin transversely isotropic laminate composite in the thermoelastic regime. According to the thermoelastic theory, the transient temperature is equivalent to a body source to generate ultrasonic waves. The numerical results indicate that the symmetric and antisymmetric Lamb wave is excited in thin transversely isotropic laminate composite plate, the evolution of the dispersive waveform is a function of the source-receiver distance, the plate thickness, and the parameters of the fiber-reinforced composite. These results are very useful for evaluation materials parameters of the composite plate.

© 2005 Chinese Optics Letters

OCIS Codes
(110.7170) Imaging systems : Ultrasound
(350.7420) Other areas of optics : Waves

Citation
Jijun Wang, Zhonghua Shen, Baiqiang Xu, Xiaowu Ni, Jianfei Guan, and Jian Lu, "Numerical simulation of laser-generated Lamb wave by finite element method in thin transversely isotropic laminate composite," Chin. Opt. Lett. 3, S308-S310 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-S1-S308

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