An intensity-based fiber optic vibration sensor

Crispin T. M. Doyle; Gerard Franklyn Fernando

doi:10.1117/12.240850

30 May 1996 An intensity-based fiber optic vibration sensor

Crispin T. M. Doyle, Gerard Franklyn Fernando

Proceedings Volume 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation; (1996) https://doi.org/10.1117/12.240850
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

A compact intensity-based fiber-optic vibration sensor, suitable for embedment or surface- mounting has been designed and evaluated. It employs simple and inexpensive instrumentation, and is shown to be responsive to frequencies in the range of 100 - 10,000 Hz. It was mounted onto the surface of specimens of carbon fiber reinforced composite, and proved to be capable of differentiating between the vibrational responses of damaged and undamaged panels. An attempt was made to characterize the sensor's output signal by FFT processing. The sensor also survived embedment in a cementitious composite panel. It is proposed that the device can be used as the sensing element of a real-time mechanical-health- monitoring system.

Citation Download Citation

Crispin T. M. Doyle and Gerard Franklyn Fernando "An intensity-based fiber optic vibration sensor", Proc. SPIE 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation, (30 May 1996); https://doi.org/10.1117/12.240850

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