New design for temperature-strain discrimination using fiber Bragg gratings embedded in laminated composites

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URI: https://hdl.handle.net/10902/35240
ISSN: 0964-1726
ISSN: 1361-665X
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Autoría
Rodríguez Cobo, LuisAutoridad Unican; Marques, António Torres; López Higuera, José MiguelAutoridad Unican; Santos, José Luís; Frazão, Orlando
Fecha
2013-10
Derechos
© IOP Publishing. This is the Accepted Manuscript version of an article accepted for publication in Smart Materials and Structures. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/0964-1726/22/10/105011
Publicado en
Smart Materials and Structures, 2013, 22(10), 105011
Editorial
Institute of Physics Publishing
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Resumen/Abstract
A new smart structure based on fiber Bragg gratings (FBGs) embedded into composite laminates for temperature and strain simultaneous measurement has been designed and experimentally tested. Two holes have been drilled at preset locations in the composite plate to create different strain sensitivities at different locations. The proposed design has been compared to three reference sensing heads also based on embedding FBGs into composite materials. Experimental results agree remarkably well with mechanical simulations and validate all the tested designs for the temperature–strain discrimination. Based on the same principle, another sensing head with a long single FBG embedded has also been designed and experimentally tested, obtaining temperature independent strain measurement.
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