Microstructured optical fiber Bragg grating as an internal three-dimensional strain sensor for composite laminates - Archive ouverte HAL Access content directly
Journal Articles Smart Materials and Structures Year : 2015

Microstructured optical fiber Bragg grating as an internal three-dimensional strain sensor for composite laminates

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Abstract

In this article, we study the possibility to use a pair of specifically designed microstructured optical fiber Bragg gratings (MOFBGs) as a multi-component strain sensor when embedded within composite materials. The dependence on the orientation of the transverse sensitivity of the MOFBGs is exploited to build a sensing device able to measure the strain field along the three principal mechanical directions of a laminate composite. We developed an analytical and numerical model of such a sensor and benchmarked it with experiments performed on laminated composite coupons equipped with this sensor. We report on a theoretical strain resolution of about 5 μ in the transverse directions of the composite material, which is a six-fold improvement over results reported in literature. © 2015 IOP Publishing Ltd.
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Dates and versions

hal-02184108 , version 1 (15-07-2019)

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C. Sonnenfeld, G. Luyckx, S. Sulejmani, T. Geernaert, S. Eve, et al.. Microstructured optical fiber Bragg grating as an internal three-dimensional strain sensor for composite laminates. Smart Materials and Structures, 2015, 24 (5), pp.055003. ⟨10.1088/0964-1726/24/5/055003⟩. ⟨hal-02184108⟩
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