Conference paper
High-resolution Brillouin analysis of composite materials beams
Bar-Ilan Univ. (Israel)1
Xenom Ltd. (Israel)2
Technion-Israel Institute of Technology (Israel)3
Univ. Tecnológica Federal do Paraná (Brazil)4
Univ. du Québec en Outaouais (Canada)5
High-resolution Brillouin optical correlation domain analysis of fibers embedded within beams of composite materials is performed with 4 cm resolution and 0.5 MHz sensitivity. Two new contributions are presented. First, analysis was carried out continuously over 30 hours following the production of a beam, observing heating during exothermal curing and buildup of residual strains.
Second, the bending stiffness and Young's modulus of the composite beam were extracted based on distributed strain measurements, taken during a static three-point bending experiment. The calculated parameters were used to forecast the beam deflections. The latter were favorably compared against external displacement measurements.
Language: | English |
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Publisher: | SPIE |
Year: | 2015 |
Pages: | 96346N-96346N-4 |
Proceedings: | International Conference on Optical Fibre Sensors (OFS24) |
ISBN: | 1628418397 and 9781628418392 |
ISSN: | 1996756x and 0277786x |
Types: | Conference paper |
DOI: | 10.1117/12.2194521 |