Journal ArticleDOI
A Study of Damage Accumulation in Carbon Fibre Reinforced Epoxy Resin Structures During Mechanical Loading Monitored By Acoustic Emission
D. Valentin,A.R. Bunsell +1 more
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TLDR
In this article, it is shown that the acoustic emission obtained from plates and tube specimens for which failure is dominated by fibre fracture can be described analytically, and a means with which the importance of failure mechanisms other than fibre fracture, such as overloading, can be quantified.Abstract:
It is shown that the acoustic emission obtained from plates and tube specimens for which failure is dominated by fibre fracture can be described analytically. The approach which is taken proposes a means with which the importance of failure mechanisms other than fibre fracture can be quantified. Overloading is seen to be equivalent to an acceleration of time at the lower load. The limitations of this analysis are explored and it is shown that certain structures are not amenable to this approach.read more
Citations
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Journal ArticleDOI
Tensile behaviour of knitted carbon-fibre-fabric/epoxy laminates—Part I: Experimental
S. Ramakrishna,D. Hull +1 more
TL;DR: The tensile behavior of knitted carbon-fibre-fabric/epoxy laminates was studied by the use of acoustic emission, optical microscopy and scanning electron microscopy techniques as mentioned in this paper.
Journal ArticleDOI
The effects of time, temperature and stress on the long-term behaviour of CFRP
TL;DR: In this article, the role of the rheological properties of the matrix on the rate of damage accumulation during the steady loading of unidirectional CFRP was investigated and deduced analytically.
Dissertation
Comportement en fatigue de pièces épaisses en matériaux composites
TL;DR: In this article, a modelisation of the fissuration intra-laminaire dans les composites soumis a des sollicitations quasi-statiques ou cycliques is proposed.
Journal ArticleDOI
Towards a life prediction technique for carbon fibre filament wound structures subjected to steady pressures
Anthony R. Bunsell,D. Valentin +1 more
TL;DR: In this paper, a model of damage accumulation in carbon fiber reinforced resin is discussed and the failure mechanisms monitored by acoustic emission is combined with the damage model to make minimum life predictions for simple structures under steady applied loads.
Journal ArticleDOI
Benefits of metamodel-reduction for nonlinear dynamic response analysis of damaged composite structures
TL;DR: In this article, a method for damage prediction and dynamic behaviour analysis of laminate composite structures is proposed and investigated, where the damage is fully described by a single scalar variable whose evolution law is expressed through the maximum dissipation principle.
References
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Journal ArticleDOI
Tensile failure of fibrous composites.
TL;DR: Failure of composite consisting of matrix stiffened by uniaxially oriented fibers, when subjected to uniaXial tensile load parallel to fiber direction, was reported in this paper.
Journal ArticleDOI
Time-dependent longitudinal strength of unidirectional fibrous composites
J.M. Lifshitz,Assa Rotem +1 more
TL;DR: In this article, a theoretical and experimental treatment of the strength of unidirectional fiber-reinforced composite loaded in tension in the fiber direction is presented, where the fibers are treated as having variable strength which results in fiber fractures prior to composite failure.
Journal ArticleDOI
Tensile failure mechanisms in carbon fibre reinforced plastics
M Fuwa,A. R. Bunsell,B. Harris +2 more
TL;DR: In this article, the authors examined the modes of failure of cured and semi-cured carbon fiber-reinforced epoxy resin (CFRP) specimens and found that consecutive fiber failure may occur as a result of shearing between these sub-bundles, and that the material is weakened by internal failures that are not necessarily connected.
Journal ArticleDOI
Acoustic emission during cyclic loading of carbon-fibre-reinforced plastics
M Fuwa,B Harris,A R Bunsell +2 more
TL;DR: In this paper, acoustic emission detection has been used to study the damage occurring in unidirectional carbon-fibre-reinforced plastics (CFRP) during cyclic loading and stress relaxation at high stress levels.
Longitudinal Strength of Unidirectional Fibrous Composites.
Jacob M. Lifshitz,Assa Rotem +1 more
TL;DR: Theoretical and experimental investigation of the longitudinal strength of unidirectional fiber reinforced composite has been performed as mentioned in this paper, where fibers are treated as having variable strength which results in fiber fractures prior to composite failure.
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Tensile failure mechanisms in carbon fibre reinforced plastics
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