Ultrasonic Excitation by Phase Velocity Scanning of Laser Beam and Application to Nondestructive Evaluation (Short Note)
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概要
- 論文の詳細を見る
It is essential for advanced nondestructive evaluation that single mode of acoustic waves be selectively generated. We have proposed the phase velocity scanning (PVS) method for this purpose. In this work, we improved the PVS method by using an acoustooptic deflector to scan a laser beam at high velocity with high repeatability. In aluminum plates, we succeeded to generate narrow-band single-mode Lamb waves, which propagated a distance more than 1.7m. We propose to apply this method to detection of defects on large plate structures. [DOI: 10.1143/JJAP.41.3547]
- 社団法人応用物理学会の論文
- 2002-05-30
著者
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Yamanaka Kazushi
Department Of Materials Processing Tohoku University
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Yamanaka Kazushi
Department Of Materials Processing Graduate School Of Engineering Tohoku University
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Cho Hideo
Department Of Materials Processing Graduate School Of Engineering Tohoku University
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Cho Hideo
Department Of Materials Processing Tohoku University
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Watanabe Tomokazu
Department Of Materials Processing Tohoku University
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Yamanaka Kazushi
Department Of Applied Physics Faculty Of Engineering University Of Tokyo:(present Address)mechanical
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