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Proceedings Paper

Polymer optical fiber sensors for the civil infrastructure
Author(s): Sharon Kiesel; Patrick Van Vickle; 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. A formulation for the sensor response is presented, including the finite deformation of the POF cross-section at high strain values and nonlinear strain optic effects in the polymer. In addition, the design of a time-of-flight interferometer for phase measurements over the large strain range required is outlined. Afterwards, initial measurements of the mechanical response of the sensor at various strain rates are presented. Finally the bond strength of specimens with the POF embedded in various structural materials is investigated.

Paper Details

Date Published: 11 April 2006
PDF: 12 pages
Proc. SPIE 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, 617435 (11 April 2006); doi: 10.1117/12.658885
Show Author Affiliations
Sharon Kiesel, North Carolina State Univ. (United States)
Patrick Van Vickle, 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. 6174:
Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)

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