Distributed Feedback Fiber Laser Rosette for Acoustic Emission Detection

Abstract:

This study aims at providing a practical method in large structure health monitoring. A novel fiber optic rosette based on distributed feedback (DFB) fiber laser for acoustic emission (AE) detection and location is presented. The ultra-narrow line width of the DFB fiber laser will result in high resolution in AE wave detection using a fiber optic interferometric demodulation method. The directivity of the fiber optic rosette is investigated. A rosette with three DFB fiber lasers is tested in the experiment to determine the direction of propagation of AE waves.

• Periodical: Applied Mechanics and Materials (Volume 330)
• Pages: 412-417
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.330.412
• Online since: June 2013
• Authors: Wen Zhu Huang, Wen Tao Zhang, Huai Xiang Ma, Fang Li, Yan Liang Du
• Keywords: Acoustic Emission (AE), Directivity, Fiber Laser, Location, Rosette

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