Proceedings of the 1992 Annual Meeting of JSME/MMD
Online ISSN : 2433-1287
2001
Session ID : 352
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352 Study of electromagnetic acoustic transducer for multiple mode-Lamb wave
Riichi MurayamaSouji HaradaNorisato ShigenagaSyouichi Miyano
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Abstract
The electromagnetic acoustic transducer(EMAT) for Lamb wave, which consists of a meander coil with a distance of 2.5mm between two channels and has a symmetrical structure in the vertical direction for both surface sides of a thin steel sheet, has been researched as a flaw detector of thin steel sheets. This EMAT can generate some Lamb waves with variable wavelengths and multiple modes, and can separately generate symmetrical or anti-symmetrical mode Lamb waves.
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© 2001 The Japan Society of Mechanical Engineers
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