Modeling, optimization, and experimental validation of a resonant piezo-optical ring sensor for enhanced active and passive structural health monitoring

Erik Frankforter; Jingjing Bao; Bin Lin; Victor Giurgiutiu

doi:10.1117/12.2084457

27 March 2015 Modeling, optimization, and experimental validation of a resonant piezo-optical ring sensor for enhanced active and passive structural health monitoring

Erik Frankforter, Jingjing Bao, Bin Lin, Victor Giurgiutiu

Author Affiliations +

Proceedings Volume 9436, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2015; 94360B (2015) https://doi.org/10.1117/12.2084457
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

A mechanical resonant piezo-optical ring sensor was studied, designed to selectively enhance the response of piezoelectric wafer active sensors (PWAS) and fiber Bragg grating (FBG) sensors. The frequency characteristics of the ring sensor were modeled through modal and harmonic analyses. The models were used to guide the experimentation, serving as a basis for comparison and implementation. Pitch-catch, resonance, and acoustic emission (AE) experiments were performed to compare the performance of the ring sensor to plate-mounted PWAS and FBG. Factors relating to optimal in-service implementation, particularly symmetric placement of FBG and PWAS, were investigated. It was found that the ring sensor was capable of amplifying an incoming Lamb wave signal. This was applied to AE experiments, where selective frequencies were amplified such that the time-domain signal had a larger amplitude response.

Citation Download Citation

Erik Frankforter, Jingjing Bao, Bin Lin, and Victor Giurgiutiu "Modeling, optimization, and experimental validation of a resonant piezo-optical ring sensor for enhanced active and passive structural health monitoring", Proc. SPIE 9436, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2015, 94360B (27 March 2015); https://doi.org/10.1117/12.2084457

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