Temperature gradients and vibration measurements obtained in a composite material by a multichannel optical fiber interferometer

Jose Antonio Garcia Souto; Horacio Lamela

doi:10.1117/12.396413

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24 August 2000 Temperature gradients and vibration measurements obtained in a composite material by a multichannel optical fiber interferometer

Jose Antonio Garcia Souto, Horacio Lamela

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Proceedings Volume 4073, Fifth European Conference on Smart Structures and Materials; (2000) https://doi.org/10.1117/12.396413
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

Abstract

We present the results of our experiment for the characterization of mechanical vibrations and temperature gradients of a carbon fiber board. The sensor system is a multichannel interferometer with sensing optical fibers embedded onto the plate under test. We investigate the simultaneous measurement of dynamic gradients of temperature and propagation of vibrations applying a synchronous sampling at the frequency of vibrations. The signals resulting from this technique provides the information of the optical phase due to temperature changes and the relative amplitude of vibrations. We measure the optical phase difference between four separated fiber-optic channels relative to a common reference path. The results are the calibration of the sensor and the spatial propagation of vibrations and temperature gradient.

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Jose Antonio Garcia Souto and Horacio Lamela "Temperature gradients and vibration measurements obtained in a composite material by a multichannel optical fiber interferometer", Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000); https://doi.org/10.1117/12.396413

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