Fiber optic sensor reliability issues in structural health monitoring

Zhihong Xu; Asadollah Bassam; Hongqiang Jia; Adam Tennant; Farhad Ansari

doi:10.1117/12.606834

16 May 2005 Fiber optic sensor reliability issues in structural health monitoring

Zhihong Xu, Asadollah Bassam, Hongqiang Jia, Adam Tennant, Farhad Ansari

Proceedings Volume 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems; (2005) https://doi.org/10.1117/12.606834
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

Reliability is an important aspect of any sensor, and especially in terms of long term monitoring of structures. Some issues pertaining to the reliability of optical fiber sensors in civil structures are discussed in this article. The strength and fatigue properties of optical fibers influence their performance, and life span. Lessons learnt from the reliability of optical fibers in the telecommunication industry are useful for assessment of reliability in optical fiber sensors. However, optical fiber sensors go through additional manufacturing steps, handling processes, and in general operate under environmental conditions and stress levels different from the telecommunication lines. In general, optical fiber sensors in structures are subjected to fatigue loading under high stresses. Other reliability concerns pertain to the effects of the packaging, installation issues at the construction site. These issues along with some of the results acquired from fatigue tests on fiber optic Bragg gratings and long gauge interferometric sensors are discussed in this article.

Citation Download Citation

Zhihong Xu, Asadollah Bassam, Hongqiang Jia, Adam Tennant, and Farhad Ansari "Fiber optic sensor reliability issues in structural health monitoring", Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); https://doi.org/10.1117/12.606834

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