Acoustic emission and elastic wave measurements by using a new fiber-optic (DEFEW) sensor

K. Kageyama; H. Murayama; Isamu Ohsawa; K. Uzawa; Makoto Kanai; Y. Akematsu; M. Matsuo; T. Matsuo

doi:10.1117/12.623601

23 May 2005 Acoustic emission and elastic wave measurements by using a new fiber-optic (DEFEW) sensor

K. Kageyama, H. Murayama, Isamu Ohsawa, K. Uzawa, Makoto Kanai, Y. Akematsu, M. Matsuo, T. Matsuo

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623601
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

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.

Citation Download Citation

K. Kageyama, H. Murayama, Isamu Ohsawa, K. Uzawa, Makoto Kanai, Y. Akematsu, M. Matsuo, and T. Matsuo "Acoustic emission and elastic wave measurements by using a new fiber-optic (DEFEW) sensor", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623601

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