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Proceedings Paper

Acoustic emission and elastic wave measurements by using a new fiber-optic (DEFEW) sensor
Author(s): K. Kageyama; H. Murayama; Isamu Ohsawa; K. Uzawa; Makoto Kanai; Y. Akematsu; M. Matsuo; T. Matsuo
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Paper Abstract

A new fiber-optic acoustic/vibration sensor has been developed. The sensor is based on Doppler effect in flexible and expandable light-waveguide (DEFEW). The DEFEW sensor has extremely high sensitivity in wide band of frequency range. The sensing technology is applied to high speed phenomena, for examples, breakage of carbon fiber in matrix resin and elastic wave propagation impacted by electrical discharge. The demonstrated results show that the DEFEW sensor is applicable to nondestructive damage detection for structural health monitoring.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623601
Show Author Affiliations
K. Kageyama, The Univ. of Tokyo (Japan)
H. Murayama, The Univ. of Tokyo (Japan)
Isamu Ohsawa, The Univ. of Tokyo (Japan)
K. Uzawa, The Univ. of Tokyo (Japan)
Makoto Kanai, The Univ. of Tokyo (Japan)
Y. Akematsu, The Univ. of Tokyo (Japan)
M. Matsuo, The Univ. of Tokyo (Japan)
T. Matsuo, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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