Laser generation of surface waves on cylinder and coated cylinder 被引量：1

Laser generation of surface waves on cylinder and coated cylinder

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摘要 Analytical models of acoustic field excited by a pulsed-laser line source on a cylinder and a coated cylinder were presented. Surface wave dispersive behaviors for a cylinder with a slow coating were analyzed and compared with that of a bare cylinder. Based on this analysis, the laser-generated transient response of the cylindrical Rayleigh wave on cylinder and the perturbed cylindrical Rayleigh wave on coated cylinder and the higher modes were calculated from the models using residue theory and FFT technique. The theoretical results from the superposed waveform of the cylindrical Rayleigh wave and higher modes for both cylinder and coated cylinder agree well with the waveforms obtained from experiment. The transient response of perturbed Raleigh wave on coated cylinder is quite different with cylindrical Rayleigh wave on cylinder because of the guide of surface coating. The results show that the model and numerical method provide a useful technique for quantitatively characterizing coating parameters of coated cylinder by the laser generated surface waves. Analytical models of acoustic field excited by a pulsed-laser line source on a cylinder and a coated cylinder were presented. Surface wave dispersive behaviors for a cylinder with a slow coating were analyzed and compared with that of a bare cylinder. Based on this analysis, the laser-generated transient response of the cylindrical Rayleigh wave on cylinder and the perturbed cylindrical Rayleigh wave on coated cylinder and the higher modes were calculated from the models using residue theory and FFT technique. The theoretical results from the superposed waveform of the cylindrical Rayleigh wave and higher modes for both cylinder and coated cylinder agree well with the waveforms obtained from experiment. The transient response of perturbed Raleigh wave on coated cylinder is quite different with cylindrical Rayleigh wave on cylinder because of the guide of surface coating. The results show that the model and numerical method provide a useful technique for quantitatively characterizing coating parameters of coated cylinder by the laser generated surface waves.

作者 HU Wenxiang ZHANG Shigong

机构地区 Institute of Acoustics

出处《Chinese Journal of Acoustics》 2011年第1期55-61,共7页 声学学报（英文版）

基金 supported by the National Natural Science Foundation of China(10374070) the National Research Foundation of Korea by the National Natural Science Foundation of China(NSFC)

分类号 TN24 [电子电信—物理电子学] TG174.44 [金属学及工艺—金属表面处理]

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参考文献2

1HUWen-Xiang QIANMeng-Lu.Propagating Properties of Cylindrical Rayleigh Waves Generated by a Pulsed Laser Line Source[J].Chinese Physics Letters,2004,21(7):1294-1297. 被引量：3
2张世功,胡文祥.Laser Generation of Surface Waves on Cylinder with a Slow Coating[J].Chinese Physics Letters,2008,25(12):4314-4317. 被引量：3

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