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Acoustic emission is the leading structural health monitoring technique use for the early warning detection of structural damage in advanced composite structures associated with impacts, cracks, fracture, and delaminations. This paper describes progress towards the development of a fiber optic acoustic emission sensor (FAESense™) system based on the use of a novel two-wave mixing interferometer produced on a photonic integrated circuit (PIC) microchip.
Edgar Mendoza,John Prohaska,Connie Kempen,Yan Esterkin,Sunjian Sun, andSridhar Krishnaswamy
"Fiber optic system for the real time detection, localization, and classification of damage in composite aircraft structures", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577E (2 June 2014); https://doi.org/10.1117/12.2064895
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Edgar Mendoza, John Prohaska, Connie Kempen, Yan Esterkin, Sunjian Sun, Sridhar Krishnaswamy, "Fiber optic system for the real time detection, localization, and classification of damage in composite aircraft structures," Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577E (2 June 2014); https://doi.org/10.1117/12.2064895