| Scholte Wave at Air-Metal Interface Generated by a Pulsed Disc-Like Source |
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| 作者姓名： | 彭若龙 钱梦騄 |
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| 作者单位： | Institute of Acoustics, Tongji University, Shanghai 200092 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10134020 and 10234060. |
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| 摘 要： |
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| 关 键 词： | Scholte波 空气 金属 分界面 脉冲源 |
| 收稿时间： | 2005-05-14 |
| 修稿时间： | 2005-05-14 |
Scholte Wave at Air-Metal Interface Generated by a Pulsed Disc-Like Source |
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| Abstract: | The normal displacement and pressure of Scholte and Leaky Rayleigh waves at air-metal interface generated by a pulsed disc-like source are simulated theoretically by the Cagniard-de Hoop method and studied by laser ultrasound technique experimentally. It is found that the Scholte wave detected by a photorefractive interferometer is mainly contributed by the surface pressure and the Leaky Rayleigh wave is dominated by the surface displacement. It is also proven that the pulse width of these interface waves is mainly determined by the acoustic time delay on the generating source size under our experimental conditions. |
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