Journal ArticleDOI
On the relation between crack densities, stiffness degradation, and surface temperature distribution of tensile fatigue loaded glass-fibre non-crimp-fabric reinforced epoxy
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In this paper, the relationship between crack density, stiffness degradation, surface temperature distribution and failure of E-glass fiber non-crimp fabric reinforced epoxy (GF-NCF-EP) was investigated.Abstract:
In mechanically loaded laminated composites different damage types occur and interact with each other This work contributes to the understanding of the damage and degradation process in fatigue loaded E-glass fibre non-crimp fabric reinforced epoxy (GF-NCF-EP) In particular, it is focused on the relation between crack density, stiffness degradation, surface temperature distribution and failure of fatigue loaded GF-NCF-EP The stiffness degradation of quasi-statically loaded GF-NCF-EP can be related to and modelled by the change of crack density The location of the final failure in fatigue loaded GF-NCF-EP can be detected via thermography already in an early stage of fatigue life The location of final failure cannot be related to the local crack density Thus, the stiffness degradation and failure of GF-NCF-EP under fatigue loading seems to be governed by different, decoupled, mechanismsread more
Citations
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Journal ArticleDOI
Load and health monitoring in glass fibre reinforced composites with an electrically conductive nanocomposite epoxy matrix
TL;DR: In this paper, an epoxy resin was modified with two different types of carbon nanotubes and with carbon black, in order to achieve an electrical conductivity, which was used for both, damage and load detection of fiber reinforced composites.
Journal ArticleDOI
Structural health monitoring of glass fiber reinforced composites using embedded carbon nanotube (CNT) fibers
Nikolaos D. Alexopoulos,Nikolaos D. Alexopoulos,Christèle Bartholome,Philippe Poulin,Zaira P. Marioli-Riga +4 more
TL;DR: In this article, carbon nanotube (CNT) fibers were embedded to glass fiber reinforced polymers (GFRP) for the structural health monitoring of the composite material.
Journal ArticleDOI
The tensile fatigue behaviour of a silica nanoparticle-modified glass fibre reinforced epoxy composite
TL;DR: In this paper, an anhydride-cured thermosetting epoxy polymer was modified by incorporating 10 wt.% of well-dispersed silica nanoparticles, which increased the fatigue life by about three to four times.
Journal ArticleDOI
Improvement of fatigue life by incorporation of nanoparticles in glass fibre reinforced epoxy
TL;DR: In this article, the fatigue properties of glass fibre reinforced epoxy laminates modified with small amounts (0.3 ¼ ) of nanoparticles (fumed silica SiO 2 and multi-wall carbon nanotubes (MWCNT)) were evaluated by means of static and dynamic fatigue tests.
Journal ArticleDOI
The Tensile Fatigue Behavior of a Glass-fiber Reinforced Plastic Composite Using a Hybrid-toughened Epoxy Matrix
TL;DR: In this paper, a thermosetting epoxy-polymer was modified by incorporating 9 wt% of carboxyl-terminated butadiene-acrylonitrile rubber microparticles and 10 wt percent of silica nanoparticles.
References
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Book
Application of fracture mechanics to composite materials
TL;DR: Fracture analysis of polymer composites has been studied in this article, showing that fracture properties of composite materials can be classified into three categories: fracture of anisotropic materials, fracture of polymers, and fracture of composite laminates.
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Fatigue of Composite Materials: Damage Mechanisms and Fatigue Life Diagrams
TL;DR: In this paper, the basic fatigue damage mechanisms in composite laminates are reviewed and a pattern in the fatigue-life diagrams is proposed based on these mechanisms, and several experimental data are shown to agree with this basic pattern.
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Rapid determination of the fatigue curve by the thermographic method
TL;DR: In this paper, the Risitano method is used to determine the fatigue limit of a material and its components, and a procedure for the definition of the whole fatigue curve is presented.
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Fracture of fatigue-loaded composite laminates
Kenneth Reifsnider,R. Jamison +1 more
TL;DR: In this article, the authors examined the effect of pre-fracture fatigue on composite laminates and found that the large strength reductions observed prior to failure at low load levels can be explained by internal stress redistribution and material degradation events.
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Formation of damage and its effects on non-crimp fabric reinforced composites loaded in tension
TL;DR: In this paper, structural properties of NCF cross-ply laminates have been tested in tension and the effects of damage on mechanical properties are modelled using modified micro mechanical models developed for analysis of conventional laminated composites.