Lamb Wave Detection Using PZT and Fiber Optic Sensor

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The surface mounted piezoceramic transducers and fiber optic sensor can detect signals in both symmetric and antisymmetric Lamb wave modes. Hanning windowed sine torn bursts were used for the piezoceramic transducer excitation signals. In order to overcome the difficulties in the signal processing of the simultaneous modes, using the two sensors bonded on the opposite surfaces at the same planer location separated the symmetric and antisymmetric modes. Spectral analyses of the separated symmetric and antisymmetric Lamb waves showed that each mode propagated with different frequency characteristics in the exciting frequency band range. In case of a fiber optic sensor, its geometric characteristics induce sensing directivity of Lamb wave. In this paper, the directivity of a fiber optic sensor was investigated using EFPI (extrinsic Fabry-Perot interferometer) sensor.
Publisher
JSME
Issue Date
2004
Language
English
Citation

NIHON KIKAI GAKKAI KANTO SHIBU SOKAI KOEN RONBUNSHU , v.10, no. , pp.55 - 58

URI
http://hdl.handle.net/10203/81986
Appears in Collection
AE-Journal Papers(저널논문)
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