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Proceedings Paper

Delamination detection in composites using optical fiber techniques
Author(s): Kent A. Murphy; C. A. Schmid; Tuan A. Tran; Gregory Paul Carman; Anbo Wang; Richard O. Claus
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Paper Abstract

Delaminations between composite laminate are of particular interest because they may cause catastrophic failure of the composite structure. The ability to detect the occurrence and location of a delamination is therefore important in predicting and preventing catastrophic failures within composite structures. This paper describes a delamination detection system for a composite panel. The detection is based on the changes in the acoustic properties of the materials before and after delaminations. Extrinsic Fabry-Perot interferometric (EFPI) optical fiber sensors are embedded and attached in/on a composite panel for detection of the acoustic property changes. Experimental results are presented and discussed.

Paper Details

Date Published: 1 May 1994
PDF: 5 pages
Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); doi: 10.1117/12.173950
Show Author Affiliations
Kent A. Murphy, Virginia Polytechnic Institute and State Univ. (United States)
C. A. Schmid, Virginia Polytechnic Institute and State Univ. (United States)
Tuan A. Tran, Fiber and Sensor Technologies, Inc. (United States)
Gregory Paul Carman, Univ. of California/Los Angeles (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2191:
Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation
James S. Sirkis, Editor(s)

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