On-Line Registration of Damages in Composite Materials with Fiber-Optic Acoustic Emission Sensors

Abstract:

This paper presents the results of the analysis of acoustic emission signals registered by using fiber-optic sensors during the propagation of ultrasonic waves in a polymer composite material. Fiber-optical sensors for acoustic emission were constructed according to the scheme of an adaptive holographic interferometer. Unlike piezoelectric sensors, fiber-optic sensors are distributed type sensors. This imposes certain features on the detection of signals in plates in which fiber-optic sensors are embedded. It is established that the difference of the spectrum of acoustic emission signals is registered in different directions of wave propagation. The local maximums of the spectrum are determined by the mode of wave propagation in the plate in different directions and the location of fiber-optic sensors.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 270-275
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.270
• Online since: February 2019
• Authors: O.V. Bashkov*, H. Khon, V.I. Zaikov, I.O. Bashkov, A.I. Evstigneev
• Keywords: Acoustic Emission, Anisotropy, Fiber-Optic Sensors, Polymer Composite Material

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