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A study of the displacement field around embedded fibre optic sensors
Luleå tekniska universitet.
Aeronautical Research Institute of Sweden.
Aeronautical Research Institute of Sweden.
Cavendish Laboratory.
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1999 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 30, no 11, p. 1267-1275Article in journal (Refereed) Published
Abstract [en]

Deformation fields around optical fibres embedded in carbon fibre/epoxy composite specimens have been measured using moiré interferometry. The inclusion of the optical fibre resulted in large strain gradients. Calculated displacements from finite element analysis were compared to the experimental results. The numerical analysis showed that the displacement field on the specimen surface is smoothed out through the moiré grating thickness, an effect which is most pronounced at the material interfaces. With this influence taken into consideration a reasonable good quantitative agreement between the experiments and the finite element analysis was obtained. The finite element analysis also showed that the grating stiffness did not affect the measured displacements as long as the grating had a lower stiffness than the specimen

Place, publisher, year, edition, pages
1999. Vol. 30, no 11, p. 1267-1275
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-8001DOI: 10.1016/S1359-835X(99)00036-6ISI: 000082489300004Local ID: 67122e50-ff21-11db-b19d-000ea68e967bOAI: oai:DiVA.org:ltu-8001DiVA, id: diva2:980891
Note
Godkänd; 1999; 20070510 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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