Journal ArticleDOI
The interaction of a crack front with a second-phase dispersion
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TLDR
In this paper, it was shown that a crack front increases its length by changing its shape when it interacts with two or more inhomogeneities in a brittle material, and an expression for the fracture energy was obtained.Abstract:
Observations are presented showing that a crack front increases its length by changing its shape when it interacts with two or more inhomogeneities in a brittle material. These observations are presented for both cleavage and conchoidal types of fracture. Based on these observations and the concept that a crack front possesses a line energy, an expression for the fracture energy is obtained. This expression shows that the fracture energy should increase as the distance between the dispersed inhomogeneities is decreased. Using the Griffith fracture criterion, this result is discussed for the case of strengthening a brittle material.read more
Citations
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Low speed fracture instabilities in a brittle crystal
Noam Bernstein,James R. Kermode,Tristan Albaret,Dov Sherman,Peter Gumbsch,Mike C. Payne,G. Ábor Csányi,Alessandro De Vita +7 more
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Properties and microstructures of Lanxide Al2O3-Al ceramic composite materials
TL;DR: In this article, a study has been made of four Al2O3-Al composite materials fabricated by the directed oxidation of molten aluminium alloys, and measurements of density, coefficient of thermal expansion, thermal conductivity, hardness, elastic constants, compressive strength, flexural strength, fracture toughness, work of fracture, and thermal shock resistance are reported.
Journal ArticleDOI
Fracture Energy and Strength Behavior of a Sodium Borosilicate Glass‐Al2O3 Composite System
TL;DR: Fracture energy and strength were determined for three series within a sodium borosilicate glass-Al2O3 dispersed composite system as discussed by the authors, and the fracture energy was determined at 77°K with the double cantilever specimen configuration.
Journal ArticleDOI
Crack interaction with microstructure
Sharvan Kumar,William A. Curtin +1 more
TL;DR: In this paper, a variety of multiphase alloys including steels, titanium aluminides, Mo alloys, and nanocrystalline metals are reviewed, and various aspects of crack interaction with microstructure are demonstrated through experiments and computations.
Journal ArticleDOI
Particulate silicon nitride-based composites
TL;DR: In this article, a review of particulate, silicon nitride-based composites other than whisker- or platelets-reinforced, is presented, with a special emphasis on TiN- and TiC-containing ceramics.
References
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Journal ArticleDOI
The Phenomena of Rupture and Flow in Solids
TL;DR: In this article, the authors investigated the effect of surface scratches on the mechanical strength of solids, and some general conclusions were reached which appear to have a direct bearing on the problem of rupture, from an engineering standpoint, and also on the larger question of the nature of intermolecular cohesion.
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LXXV. The moving griffith crack
TL;DR: In this article, a straight crack moving through an elastic medium is calculated and the stresses depend on the velocity and reduce to Inglis' solution when the velocity is zero, and the results may be applied to the spicular fracture of glass.
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Fracture Surface Energy of Glass
TL;DR: In this article, the double-cantilever cleavage technique was used to measure the fracture surface energy of six glasses and the results ranged from 3.5 to 5.3 J/m2 depending on the chemical composition of the glass and the temperature of the test.