Journal ArticleDOI
Crack blunting mechanisms in polymers
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TLDR
In this article, a quantitative model has been developed to account for the degree of blunting that occurs at crack tips in epoxy materials prior to the onset of crack propagation, which controls the subsequent mode of crack growth and the toughness as defined by the stress intensity factor for crack initiation.Abstract:
A quantitative model has been developed to account for the degree of blunting that occurs at crack tips in epoxy materials prior to the onset of crack propagation. This mechanism controls the subsequent mode of crack growth and, to a large extent, the toughness as defined by the stress intensity factor for crack initiation. From this model a unique fracture criterion is derived which is applicable over all modes of crack propagation.read more
Citations
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Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate–polymer composites
TL;DR: In this article, the effects of particle size, particle/matrix interface adhesion and particle loading on the stiffness, strength and toughness of such particulate polymer composites are reviewed.
Journal ArticleDOI
Epoxy nanocomposites ¿ fracture and toughening mechanisms
TL;DR: In this paper, a comprehensive study was carried out on series of nanocomposites containing varying amounts of nanoparticles, either titanium dioxide (TiO 2 ) or aluminium oxide (Al 2 O 3 ).
Journal ArticleDOI
Deformation and fracture behaviour of a rubber-toughened epoxy: 1. Microstructure and fracture studies
TL;DR: In this article, the microstructure and fracture behavior of an unmodified and a rubber-modified epoxy have been studied and the mechanisms for this increased toughness have been considered and a mechanism that accounts for all the observed characteristics has been proposed.
Book
The Theory of Critical Distances
TL;DR: The Theory of Critical Distance Theories of Fracture (TCD) is a group of theories used for predicting the effects of notches and other stress-concentration features as mentioned in this paper.
Journal ArticleDOI
Failure mechanisms in toughened epoxy resins—A review
Amar C. Garg,Yiu-Wing Mai +1 more
TL;DR: A critical review of the existing theories that have been proposed for the various toughening mechanisms related to modified epoxy resins can be found in this article, where the failure mechanisms leading to the improvement in toughness are discussed.
References
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Journal ArticleDOI
Finite deformation analysis of crack-tip opening in elastic-plastic materials and implications for fracture
TL;DR: In this article, a finite element method was used to analyze the deformation field around smoothly-blunting crack tips in both non-hardening and hardening elastic-plastic materials, under contained plane-strain yielding and subject to mode I opening loads.
Failure of brittle polymers by slow crack growth (part 2)
Pwr Beaumont,RJ Young +1 more
TL;DR: In this article, the authors measured the variation of crack velocity (V) with stress intensity factor (KI) at the tip of a crack has been measured for an epoxy resin containing 42% by volume of irregularly-shaped silica particles.
Journal ArticleDOI
Relationship between mechanical properties of and crack progogation in epoxy resin adhesives
TL;DR: In this paper, a series of amine-cured epoxy resin adhesives in both the bulk material and adhesive joints has been studied as a function of the formulation of the resins and the conditions of testing using a linear elastic fracture mechanics approach.