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Fiber optic transverse pressure detection technology for structural health monitoring
Author(s): Yi Zhang; Zhi Zhuang; Chong Li
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Paper Abstract

An embedded fiber optic sensor based on the photonic crystal fiber is proposed to measure the transverse stress in composited material for structural health monitoring. The sensing principle has been analyzed and validated by experiments. The 0.1%F.S high precision calibration device has been designed to indicated that linear correlation between the wavelength shift of Sagnac loop and pressure, and the good performances of sensor, such as the sensitivity coefficient is 0.1285nm/N, linearity is accessible to 1.02%F.S, maximum error is 3%F.S. Other experiments have been done by a material testing machine on the sensor, which have shown that the sensitivity coefficient is increasing with sensing length but immune with the shape of sensor. The sensor will be suitable for solving the problem of high precision online pressure monitoring in some complex structure health monitoring.

Paper Details

Date Published: 13 November 2018
PDF: 5 pages
Proc. SPIE 10766, Infrared Sensors, Devices, and Applications VIII, 107660Q (13 November 2018); doi: 10.1117/12.2319912
Show Author Affiliations
Yi Zhang, Institute of Systems Engineering (China)
Zhi Zhuang, Institute of Systems Engineering (China)
Chong Li, Institute of Systems Engineering (China)


Published in SPIE Proceedings Vol. 10766:
Infrared Sensors, Devices, and Applications VIII
Paul D. LeVan; Priyalal Wijewarnasuriya; Arvind I. D'Souza, Editor(s)

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