Failure processes in composite materials: getting physical

This paper describes crack growth processes in carbon fibre and glass fibre-epoxy laminates under stress and quantifies by physical modelling the accumulation of damage with load cycling. Cracking mechanisms are observed directly and identified by in-situ dynamic scanning electron microscopy. Armed...

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Bibliographic Details
Published in:Journal of materials science 2006-10, Vol.41 (20), p.6526-6546
Main Authors: Beaumont, P W R, Dimant, R A, Shercliff, H R
Format: Article
Language:English
Subjects:
Carbon fiber reinforced plastics
Carbon fibres
Carbon-epoxy composites
Composite materials
Crack propagation
Cracking (fracturing)
Damage
Damage accumulation
Fatigue failure
Fracture mechanics
Glass fiber reinforced plastics
Glass-epoxy composites
Laminates
Materials science
Modelling
Scanning electron microscopy
State variable
Stresses
Structural damage
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Description
Summary:This paper describes crack growth processes in carbon fibre and glass fibre-epoxy laminates under stress and quantifies by physical modelling the accumulation of damage with load cycling. Cracking mechanisms are observed directly and identified by in-situ dynamic scanning electron microscopy. Armed with this information, particular attention is given to the differences between these cracking processes and the way they interact, their growth-rate, and their effect on the damage-state of the structure with variations in laminate geometry, with changes in magnitude of applied stress, and with fatigue cycles. Particular attention is given to the internal damage state variable approach to physical modelling.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-0196-3