Paper Title:
Fatigue Crack Growth Monitoring by Optical Fiber Sensors in Smart Composite Patch Repairs
  Abstract

The fiber optic smart structures allow engineers to add nerve systems to their designs, giving structures capabilities that would be very difficult to achieve by other means, including continuous assessment of damage processes. In this study, we evaluated the potentiality of the application of the optical fiber sensors to the monitoring of the fatigue crack growth behavior of composite patch repaired structures. The composite patch with embedded optical fiber sensors can be considered as a smart patch which has both repairing and monitoring functions. We used recently developed Transmission-type Extrinsic Fabry-Perot Interferometric (TEFPI) optical fiber sensors for the monitoring of fatigue crack growth behavior of cracked thick aluminum plate repaired with bonded composite patch. The sensing principle and the senor construction of the optical fiber sensor are presented. The experimental results show that it is possible to monitor the fatigue crack growth behavior of structures repaired with composite patch using the optical fiber sensor

  Info
Periodical
Key Engineering Materials (Volumes 321-323)
Edited by
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages
286-289
DOI
10.4028/www.scientific.net/KEM.321-323.286
Citation
D. C. Seo, I. B. Kwon, J. J. Lee, "Fatigue Crack Growth Monitoring by Optical Fiber Sensors in Smart Composite Patch Repairs", Key Engineering Materials, Vols. 321-323, pp. 286-289, 2006
Online since
October 2006
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Price
$32.00
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