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Proceedings Paper

Polymer optical fiber sensors for civil infrastructure systems
Author(s): Sharon Kiesel; Kara Peters; O. Abdi; Tasnim Hassan; Mervyn Kowalsky
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Paper Abstract

This paper presents intrinsic polymer fiber (POF) sensors for high-strain applications such as the performance-based assessment and health monitoring of civil infrastructure systems subjected to earthquake loading or morphing aircraft. POFs provide a potential maximum strain range of 6-12%, are more flexible that silica optical fibers, and are more durable in harsh chemical or environmental conditions. Recent advances in the fabrication of singlemode POFs have made it possible to extend POFs to interferometric sensor capabilities. Furthermore, the interferometric nature of intrinsic sensors permits high accuracy for such measurements. Measurements of the mechanical response of the sensor at various strain rates are presented. In addition, the design of a time-of-flight interferometer for phase measurements over the large strain range required is discussed. Finally the bond strength between the embedded POF and various structural materials is investigated and a methodology demonstrated for embedment of the sensors into a reinforced concrete structural component.

Paper Details

Date Published: 10 April 2007
PDF: 11 pages
Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 65293B (10 April 2007); doi: 10.1117/12.715173
Show Author Affiliations
Sharon Kiesel, North Carolina State Univ. (United States)
Kara Peters, North Carolina State Univ. (United States)
O. Abdi, North Carolina State Univ. (United States)
Tasnim Hassan, North Carolina State Univ. (United States)
Mervyn Kowalsky, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 6529:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)

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