In situ strain and temperature monitoring of adaptive composite materials

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An optical fiber sensor is designed to simultaneously measure strain and temperature in an adaptive composite material. The sensor is formed by splicing two fiber Bragg gratings (FBGs) close to each other, which are written in optical fibers with different core dopants and concentrations. Their temperature sensitivities are hence different. The sensor is tested on an adaptive composite laminate made of unidirectional Kevlar-epoxy prepreg plies. Several 150 mu m diameter prestrained NiTiCu shape memory alloy (SMA) wires are embedded in the composite laminate together with one fiber sensor. Simultaneous monitoring of strain and temperature during the curing process and activation in an oven is demonstrated.
Publisher
SAGE PUBLICATIONS LTD
Issue Date
2006-12
Language
English
Article Type
Article; Proceedings Paper
Keywords

BRAGG GRATING SENSORS; MEMORY ALLOY WIRES; SMART STRUCTURES; 2ND-ORDER DIFFRACTION; FIBEROPTIC SENSORS; HYBRID-COMPOSITES; TURN COMPOSITES; PART II; DISCRIMINATION; COEFFICIENTS

Citation

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, v.17, no.12, pp.1059 - 1067

ISSN
1045-389X
DOI
10.1177/1045389X06064889
URI
http://hdl.handle.net/10203/89264
Appears in Collection
AE-Journal Papers(저널논문)
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