Surface Acoustic Waves on a Sphere —Analysis of Propagation Using Laser Ultrasonics—
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概要
- 論文の詳細を見る
Using the laser ultrasonic method, we investigated the distribution of surface acoustic waves (SAWs) on a sphere excited by a line source. Experimental results revealed that the SAWs were confined within a narrow path due to the balance of the diffraction and convergence effects. Moreover, the distribution had unique divergent, collimating and focussing forms, which had been predicted theoretically. These results were generally in good agreement with the results calculated using the approximate Green’s function. It was shown that the distribution of SAWs is well defined by the half-aperture angle of the source and by the product of the wavenumber and the radius of the sphere.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-05-30
著者
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Ishikawa Satoru
Department Of Materials Processing Graduate School Of Engineering Tohoku University
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Ishikawa Satoru
Department Of Environmental Chemistry Heavy Metal Group Soil Biochemistry Unit National Institute Fo
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Cho Hideo
Department Of Materials Processing Graduate School Of Engineering Tohoku University
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Nakaso Noritaka
Technical Research Institute Toppan Printing Co. Ltd.
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Tsukahara Y
Technical Research Institute Toppan Printing Co. Ltd.
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Tsukahara Yusuke
Technical Research Institute Toppan Printing Co. Ltd.
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Yamanaka Kazushi
Department Of Applied Physics Faculty Of Engineering University Of Tokyo:(present Address)mechanical
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Terada Yasuhiko
Department Of Applied Physics School Of Engineering The University Of Tokyo
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Ishikawa Satoru
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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