Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 26, Issue 11, Pages 1346-1359Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X14541493
Keywords
Fiber Bragg gratings (FBGs); principal component analysis (PCA); structural health monitoring (SHM); damage detection
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Funding
- Ministerio de Ciencia e Innovacion in Spain [DPI2011-28033-C03-03]
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An innovative methodology based on the use of fiber Bragg gratings as strain sensors and strain field pattern recognition is proposed for damage detection in composite materials structures. The strain field pattern recognition technique is based on principal component analysis. Damage indices (T-2 and Q) and detection thresholds are presented. New techniques for unfolding and scaling tridimensional matrices arrays obtained from structures working under variable load conditions are presented.
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