The mechanical behaviour of the fibre-reinforced composites depends on the properties of the matrix, the fibres and their reciprocal bonding. Degrading effects occurring in such materials under service – such as matrix–fibre detaching (debonding), fibre breaking, matrix cracking – must be taken into account in the safety assessments. In the present paper, the fibre–matrix debonding phenomenon at the fibre–matrix interface is examined through fracture mechanics concepts, since a geometric discontinuity arises at the edge of the debonded zone (between two dissimilar materials) producing a stress singularity. The mixed mode stress-intensity factors are determined, and the effects of the geometrical and mechanical parameters related to matrix and fibres are discussed.

FRACTURE MECHANICS APPROACH FOR A PARTIALLY DEBONDED CYLINDRICAL FIBRE / Brighenti, Roberto; Carpinteri, Andrea; Scorza, Daniela. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - 53:(2013), pp. 169-178. [10.1016/j.compositesb.2013.03.042]

FRACTURE MECHANICS APPROACH FOR A PARTIALLY DEBONDED CYLINDRICAL FIBRE

BRIGHENTI, Roberto;CARPINTERI, Andrea;SCORZA, Daniela
2013-01-01

Abstract

The mechanical behaviour of the fibre-reinforced composites depends on the properties of the matrix, the fibres and their reciprocal bonding. Degrading effects occurring in such materials under service – such as matrix–fibre detaching (debonding), fibre breaking, matrix cracking – must be taken into account in the safety assessments. In the present paper, the fibre–matrix debonding phenomenon at the fibre–matrix interface is examined through fracture mechanics concepts, since a geometric discontinuity arises at the edge of the debonded zone (between two dissimilar materials) producing a stress singularity. The mixed mode stress-intensity factors are determined, and the effects of the geometrical and mechanical parameters related to matrix and fibres are discussed.
2013
FRACTURE MECHANICS APPROACH FOR A PARTIALLY DEBONDED CYLINDRICAL FIBRE / Brighenti, Roberto; Carpinteri, Andrea; Scorza, Daniela. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - 53:(2013), pp. 169-178. [10.1016/j.compositesb.2013.03.042]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2587244
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