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The Development and the Use of Fiber Optic Sensors for the Structural Health Monitoring of Composite (GFRP) Structures

[+] Author Affiliations
Evageline Rivera, Dimos Polyzois, Douglas J. Thomson, Ningguang Xu

University of Manitoba, Winnipeg, Manitoba, Canada

Paper No. IMECE2002-33864, pp. 85-89; 5 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Nondestructive Evaluation
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Nondestructive Evaluation Division
  • ISBN: 0-7918-3649-5 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


The development of a fiber optic sensor system for the long-term monitoring of composite glass fiber-reinforced polymer (GFRP) poles will be presented. There is a growing interest in developing techniques for evaluating and monitoring their structural integrity. In the past few years, fiber optic sensor technology has emerged as a promising alternative to conventional methods of monitoring such as strain gauges. Fiber optic sensors can be attached to or embedded in civil structures such as bridges, dams and buildings. They operate by responding to changes in temperature and strain on the structure. The long gauge fiber optic sensor measures the average strain between two points on a structure. Long gauges are interferometric sensors that involve phase matching two optical paths to create a maximum interference pattern at the photodetector. The strain is calculated using the distance in which the reference arm of the interferometer is moved in order to match the optical path lengths.

Copyright © 2002 by ASME



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