Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 61, Issue 13, Pages 1863-1869Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0266-3538(01)00086-0
Keywords
smart materials; matrix cracking; passive optical fibres
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The obtrusivity of a passive optical fibre embedded in the 0 degrees ply of a model cross-ply GRP laminate has been investigated experimentally and theoretically. The experimental results show that for quasi-static loading and cyclic loads with a peak strain greater than the quasi-static cracking threshold, both the initiation and development of matrix cracks are insensitive to the presence of the optical fibre. However, for cyclic loading with a peak strain just below the cracking threshold, the matrix crack-growth rate is reduced significantly in the vicinity of the optical fibre. The reduction in the crack-growth rate can be understood in terms of a reduction in the strain-energy release rate for cracking as a consequence of the local stiffening of the 0 degrees ply due to the presence of the optical fibre. (C) 2001 Elsevier Science Ltd. All rights reserved.
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