Journal ArticleDOI
Effect of stress ratio on near-threshold propagation of delimination fatigue cracks in unidirectional CFRP
TLDR
In this paper, the effect of the stress ratio on near-threshold growth of delamination fatigue cracks was investigated with unidirectional laminates made from Ciba Geigy 914C prepegs (T300/914) and from Toray P305 pre-pegs.About:
This article is published in Composites Science and Technology.The article was published on 1987-01-01. It has received 174 citations till now. The article focuses on the topics: Crack closure & Stress concentration.read more
Citations
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Journal ArticleDOI
Simulation of delamination in composites under high-cycle fatigue
TL;DR: In this article, a damage model for the simulation of delamination propagation under high-cycle fatigue loading is proposed, based on a cohesive law that links fracture and damage mechanics to establish the evolution of the damage variable in terms of the crack growth rate.
Journal ArticleDOI
A status report on delamination resistance testing of polymer-matrix composites
TL;DR: The development of fracture mechanics test methods for the determination of delamination resistance or fracture toughness of fiber-reinforced, polymer-matrix composites is an active area of research as mentioned in this paper.
Journal ArticleDOI
Modes I and II interlaminar fracture toughness and fatigue delamination of CF/epoxy laminates with self-same epoxy interleaf
TL;DR: In this paper, the authors investigated the effect of the self-same epoxy interlayer on the interlaminar fracture properties under modes I and II loadings on the bases of the fractographic observations and mechanism considerations.
Journal ArticleDOI
Methods for the prediction of fatigue delamination growth in composites and adhesive bonds: A critical review
TL;DR: In this paper, an overview of the development of methods for the prediction of fatigue driven delamination growth over the past 40 years is given, and four categories of methods are identified: stress/strain-based models, fracture mechanics based models, cohesive zone models, and models using the extended finite element method.
Journal ArticleDOI
Mode I delamination fatigue properties of interlayer-toughened CF/epoxy laminates
TL;DR: In this paper, the authors investigated the delamination fatigue crack growth behavior in carbon fiber (CF)/epoxy laminates with two kinds of interlayer/interleaf and found that the crack path shifted from the heterogeneous interlayer region (Stage I) to the inter-layer/base lamina interface (Stage II) with the increase of the crack length.
References
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Journal ArticleDOI
On cracks in rectilinearly anisotropic bodies
TL;DR: In this paper, the general equations for crack-tip stress fields in anisotropic bodies are derived making use of a complex variable approach and stress intensity factors, which permit concise representation of the conditions for crack extension, are defined and evaluated directly from stress functions.
Book ChapterDOI
Characterization of delamination onset and growth in a composite laminate
TL;DR: In this article, the onset and growth of delaminations in unnotched graphite epoxy laminates is described quantitatively and the strain energy release rate associated with delamination growth is calculated from two analyses.
Journal Article
Characterization of delamination onset and growth in a composite laminate
TL;DR: In this paper, the onset and growth of delaminations in unnotched graphite-epoxy laminates is described quantitatively, and the strain energy release rate associated with delamination growth is calculated from two analyses.
Book ChapterDOI
Characterizing delamination growth in graphite-epoxy
TL;DR: In this paper, coupon specimens have been developed to measure the fundamental static fracture and subcritical growth behavior of delaminations of graphite-epoxy composites, and two basic designs, one for the tensile opening mode (Mode I) and one for forward shear mode (mode II), are described.
Journal ArticleDOI
Effect of stress cycle asymmetry on fatigue crack growth
M. Klesnil,Petr Lukáš +1 more
TL;DR: In this article, the effect of stress cycle asymmetry on fatigue crack rate and on the conditions for a crack not to propagate was studied on sheet steel specimens with a sharp central notch.