Journal ArticleDOI
Fiber-matrix interface effects in the presence of thermally induced residual stresses
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TLDR
In this paper, the effects of several physical properties defining the performance of the constituent fiber, matrix, and interface are examined relative to their effect on composite's behavior, and it is shown that the initial transverse modulus for the composite will be the same regardless of whether there is a well-bonded or an unbonded interface.Abstract:
The mechanics of transversely loaded high-temperature composites with a thermally induced residual stress field and a vanishingly weak fiber-matrix interface strength was investigated using two analytical models. In particular, the effects of several physical properties defining the performance of the constituent fiber, matrix, and interface are examined relative to their effect on composite's behavior. Both models demonstrate that, if there is a thermally induced residual stress field in the composite, the initial transverse modulus for the composite will be the same regardless of whether there is a well-bonded or an unbonded interface. 10 refs.read more
Citations
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Micromechanical modeling of fiber/matrix interface effects in transversely loaded SiC/Ti-6-4 metal matrix composites
TL;DR: In this article, the transverse tensile behavior of a composite composed of unidirectional silicon-carbide fiber (Textron SCS-6) in a Ti-6AL-4V matrix is examined with emphasis on the effects of fiber-matrix interface strength.
Journal ArticleDOI
Residual stress build-up in thermoset films cured above their ultimate glass transition temperature
TL;DR: In this article, a model for the build-up of cure stresses is proposed, in which stresses are generated by the cure shrinkage and decay by viscoelastic relaxation.
Journal ArticleDOI
A micromechanical study of residual stress and its effect on transverse failure in polymer–matrix composites
TL;DR: In this paper, the effect of residual stress on failure in unidirectional fiber-reinforced polymer-matrix composites under transverse loading was studied using a micromechanical unit cell model and the finite element method.
Journal ArticleDOI
A thermo-viscoelastic analysis of process-induced residual stress in fibre-reinforced polymer–matrix composites
TL;DR: In this paper, a three-dimensional unit cell with glass fibre and epoxy polymer-matrix, representing the periodic microstructure of unidirectional fiber-reinforced composites, was considered to compute cure residual stress of fibre composites induced by chemical shrinkage of the epoxy resin and thermal cooling contraction of the whole fibre and resin system.
Journal ArticleDOI
Evolution and influence of residual stresses/strains of fiber reinforced laminates
TL;DR: In this article, a meso/micromechanical study of fiber reinforced polymeric matrix cross-ply laminates during and after a high temperature curing process is presented, focusing on the generation and evolution of the curing induced residual stress/strain and their influence on the response under subsequent mechanical loading.
References
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Journal ArticleDOI
Matrix fracture in fiber-reinforced ceramics
TL;DR: In this paper, the critical conditions for the onset of widespread matrix cracking are studied analytically on the basis of fracture mechanics theory, and theoretical results are compared with experimental data for a SiC fiber, lithium-alumina-silicate glass matrix composite.
Journal ArticleDOI
Damage in composites—Modeling of imperfect bonding
TL;DR: In this article, the effect of damage due to imperfect bonding between the constituents of composite materials is considered and the interface decohesion is described by two parameters which completely determine the degree of adhesion at the interfaces in the normal and tangential directions.