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Proceedings Paper

Application of line scanning thermography for the detection of interlaminar disbonds in sandwich composite structures
Author(s): Obdulia Ley; Simon Chung; Jaco Schutte; Anthony Caiazzo; Valery Godinez; Bruce Bandos
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Paper Abstract

An innovative Line Scanning Thermography (LST) inspection method is being developed as part of a Structural Damage Assessment System to access the health of in-service composite structures. The system utilizes a line heat source to thermally excite the surface inspected and an infrared detector to record the transient surface temperature variation and to detect regions of increased heat resistance associated to interlaminar disbonds, cracks and other imperfections found in composites structures. In this study our efforts towards the applications of LST for the analysis of carbon fiber sandwich composites will be discussed. The LST technique provides a quick and efficient methodology to scan wide areas rapidly. The scanning protocols developed for the detection of sub-surface disbonds (delamination) in composite sandwich parts will be presented. The results presented correspond to scans of test coupons with manufactured defects.

Paper Details

Date Published: 8 April 2010
PDF: 12 pages
Proc. SPIE 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010, 76491B (8 April 2010); doi: 10.1117/12.847542
Show Author Affiliations
Obdulia Ley, Mistras Group (United States)
Simon Chung, Materials Sciences Corp. (United States)
Jaco Schutte, Materials Sciences Corp. (United States)
Anthony Caiazzo, Materials Sciences Corp. (United States)
Valery Godinez, Mistras Group (United States)
Bruce Bandos, Naval Surface Warfare Ctr. (United States)


Published in SPIE Proceedings Vol. 7649:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010
Peter J. Shull; Aaron A. Diaz; H. Felix Wu, Editor(s)

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