Results 221 to 230 of about 36,960 (267)

A Fracture Criterion for Cold Forming

Journal of Engineering Materials and Technology, 1973
Fracture under combined stresses has been studied with the objective of evaluating existing fracture criteria and providing data for the formulation of new criteria. Upsetting, bending, rolling, and plane strain tests were used for the fracture study.
H. A. Kuhn, P. W. Lee, T. Erturk
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Prediction of Fracture Toughness by Local Fracture Criterion

1990
Incorporation of micromechanistic criteria of failure to analytical or numerical crack tip stress and strain solutions, known as the RKR (Ritchie, Knott, and Rice) model, derives a certain relation between the fracture toughness and flow/fracture properties of materials.
T Miyata, A Otsuka, M Mitsubayashi, T Haze, S Aihara   +4 more
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Thermodynamics and the griffith criterion for brittle fracture

International Journal of Solids and Structures, 1979
Abstract The Griffith criterion for fracture, considered within the framework of nonlinear thermoelasticity, is shown to be a necessary condition for crack initiation, provided the underlying strain energy is properly interpreted, and provided the initial temperature is continuous at the crack tip.
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A new criterion for fracture initiation

Engineering Fracture Mechanics, 1995
Abstract A new fracture initiation criterion is proposed in this paper which agrees with the results obtained by Theocaris and Andrianopoulos [ Engng Fracture Mech. 16 , 425–432 (1982)] for the case of uniaxial, biaxial and shear loading at infinity.
UKADGAONKER, VG, AWASARE, PJ
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Griffith Fracture Criterion and Concrete

Journal of the Engineering Mechanics Division, 1971
The original Griffith fracture criteria was developed to describe the rapid extension of a crack in a homogeneous elastic body. To check the applicability of the Griffith theory to portland cement systems which are neither elastic nor homogeneous, specimens of hardened cement paste, mortar and concrete made with normal and lightweight aggregates, and ...
Surendra P. Shah, Fred J. McGarry
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Det.-Criterion of Fracture

1993
Various criteria have been introduced for the determination of the conditions of initiation and the prediction of the propagation direction of a crack subjected to combined mode-I and mode-II in-plane deformations. First of all, Griffith [3] introduced a criterion based on physical consideration to determine the conditions to initiate the propagation ...
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A fracture criterion for nuclear graphite

Journal of Nuclear Materials, 1982
Abstract Measurements of tensile and flexural strength of a nuclear graphite using small bar specimens are reported. A theoretical model of failure is described in which critical defects are assumed to be associated with cleaved large coke particles.
A.P.G. Rose, M.O. Tucker
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Fracture criterion for inelastic solids

International Journal of Engineering Science, 1982
Abstract The criterion of inelastic crack growth is found on the basis of the principle of the minimum energy dissipation. According to it the variation of dissipation plus the elastic energy rate per unit of crack growth has to reach the critical value. The path-independent integral of the 2nd type about crack-tip zone is given.
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Two-parametrical fracture criterion

Strength of Materials, 2006
We demonstrate that semi-brittle or semi-plastic solids require more comprehensive fracture interpretation, than brittle or plastic ones. Application of two-parametrical fracture criterions make it possible to solve this problem and to provide more reliable estimation of mechanical behavior of materials.
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A note on the fracture-branching criterion

Philosophical Magazine A, 1979
Abstract A proof of the criterion for fracture branching, based on energy-balance arguments, is shown to be invalid.
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