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Proceedings Paper

Dynamic 3D strain measurements with embedded micro-structured optical fiber Bragg grating sensors during impact on a CFRP coupon
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Paper Abstract

Composite materials are increasingly used in aerospace applications, owing to their high strength-to-mass ratio. Such materials are nevertheless vulnerable to impact damage. It is therefore important to investigate the effects of impacts on composites. Here we embed specialty microstructured optical fiber Bragg grating based sensors inside a carbon fiber reinforced polymer, providing access to the 3D strain evolution within the composite during impact. We measured a maximum strain of -655 με along the direction of impact, and substantially lower values in the two in-plane directions. Such in-situ characterization can trigger insight in the development of impact damage in composites.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032360 (23 April 2017); doi: 10.1117/12.2263193
Show Author Affiliations
Sidney Goossens, Vrije Univ. Brussel (Belgium)
Thomas Geernaert, Vrije Univ. Brussel (Belgium)
Ben De Pauw, Vrije Univ. Brussel (Belgium)
Alfredo Lamberti, Vrije Univ. Brussel (Belgium)
Steve Vanlanduit, Vrije Univ. Brussel (Belgium)
Geert Luyckx, Univ. Gent (Belgium)
Gabriele Chiesura, Univ. Gent (Belgium)
Hugo Thienpont, Vrije Univ. Brussel (Belgium)
Francis Berghmans, Vrije Univ. Brussel (Belgium)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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