Numerical simulation of elastic acoustic wave interaction with surface-breaking defects

ZHAO Yan; YAN Wei; SHEN Zhong-hua; LU Jian; LI Xiang-yin

doi:10.3969/j.issn.1001-3806.2010.01.026

LASER TECHNOLOGY > 2010 > 34(1): 91-94. > DOI: 10.3969/j.issn.1001-3806.2010.01.026

ZHAO Yan, YAN Wei, SHEN Zhong-hua, LU Jian, LI Xiang-yin. Numerical simulation of elastic acoustic wave interaction with surface-breaking defects[J]. LASER TECHNOLOGY, 2010, 34(1): 91-94. DOI: 10.3969/j.issn.1001-3806.2010.01.026

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Numerical simulation of elastic acoustic wave interaction with surface-breaking defects

School of Science, Nanjing University of Science & Technology, Nanjing 210094, China

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Received Date: February 15, 2009
Revised Date: February 27, 2009
Published Date: January 24, 2010

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Abstract

In order to study the influence of defect on the surface acoustic wave, based on the theory of elastodynamics, the interaction between elastic surface acoustic waves and surface-breaking defect was simulated numerically by means of the finite element method. The interaction between the surface acoustic wave and surface-breaking defects in different depth and width was calculated, and the reflected and transmitted surface acoustic waves were obtained. And then the reflection and transmission coefficients were obtained by means of fast Fourier transform. The results show that the reflected and transmitted surface acoustic waves are induced by the interaction of defect on the acoustic wave. The reflection coefficient gradually increases and transmission coefficient decreases with the depth and width increasing.
- laser physics,
- surface acoustic wave,
- surface-breaking defect,
- finite element method

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[1]	ZHANG Sh Y.Laser ultrasound and nondestructive evaluation in materials[J].Applied Acoustics,1992,11(4):1-6(in Chinese).
[1]	ZHAO Y,SHEN Zh H,LU J,et al.Laser thermo-elastic generated surface acoustic waves on cylindrical coating-substrate system[J].Laser Technology,2006,30(6):647-650(in Chinese).
[2]	LIU S W,HUANG J H.Transient dynamic responses of a cracked solid subjected to in-plane loadings[J].International Journal of Solids and Structures,2003,40(18):4925-4940.
[3]	CHO Y,ROSE J L.An elastodynamic hybrid boundary element study for elastic guided wave interactions with a surface breaking defect[J].International Journal of Solids and Structures,2000,37(30):4103-4124.
[4]	CRANE L J,GILCHRIST M D,MILLER J J H.Analysis of rayleigh-lamb wave scattering by a crack in an elastic plate[J].Computational Mechanics,1997,19(6):533-537.
[5]	SONG W T,POPOVICS J S,ALDRIN J C,et al.Measurement of surface wave transmission coefficient across surface-breaking cracks and notches in concrete[J].J Acoust Soc Amer,2003,113(2):717-725.
[6]	ZHAO X L,ROSE J L.Boundary element modeling for defect characterization potential in a wave guide[J].International Journal of Solids and Structures,2003,40(11):2645-2658.
[7]	ZHAO Y,SHEN Zh H,LU J,et al.Simulation on laser-induced surface acoustic wave on isotropic cylinders by finite element method[J].Opt&Laser Technol,2007,39(4):774-777.
[8]	KASS M,FUKUSHIMA S,GOHSHI Y,et al.A basic analysis of pulsed photoacoustic signals using the finite elements method[J].J A P,1988,64(3):972-976.
[9]	ROSE J L.Ultrasonics waves in solid media[M].Unisted Kingdom:Cambridge University Press,1999:90-95.

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