Journal ArticleDOI
Singular behaviour at the end of a tensile crack in a hardening material
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In this paper, a total deformation theory of plasticity, in conjunction with two hardening stress-strain relations, is used to determine the dominant singularity at the tip of a crack in a tension field.Abstract:
D istributions of stress occurring at the tip of a crack in a tension field are presented for both plane stress and plane strain. A total deformation theory of plasticity, in conjunction with two hardening stress-strain relations, is used. For applied stress sufficiently low such that the plastic zone is very small relative to the crack length, the dominant singularity can be completely determined with the aid of a path-independent line integral recently given by rice (1967). The amplitude of the tensile stress singularity ahead of the crack is found to be larger in plane strain than in plane stress.read more
Citations
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Local and global measures of the fracture toughness of metal matrix composites
Ilchat Sabirov,Otmar Kolednik +1 more
TL;DR: In this article, the fracture behavior of two metal matrix composites at different aging conditions is investigated both at the global and local levels, focusing on the processes of void initiation near the crack tip by either particle fracture or particle/matrix decohesion, and on fracture initiation.
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Numerical analysis of retained residual stresses in C(T) specimen extracted from a multi-pass austenitic weld and their effect on crack growth
TL;DR: In this article, a research program was described to predict the start-of-creep-test levels of retained residual stress and residual stress intensity factor in compact tension C(T) specimen blanks extracted from non-post heat-treated AISI 316 weldments.
Journal ArticleDOI
Global constraint-insensitive fracture in SiC particulate-reinforced AA 2009
TL;DR: In this article, the authors show that the effective plastic fracture strain for a discontinuously reinforced metal matrix composite (MMC) is insensitive to globally imposed triaxial tensile stress, because the elastic reinforcement independently produces high local matrix constraint during plastic deformation.
Journal ArticleDOI
Evaluation of fracture toughness characteristics for nuclear piping using various types of specimens
TL;DR: In this article, the fracture-toughness of different types of nuclear pipe materials is compared and each J-R curve considered in the constraint effect is compared, and the experimental results showed that a curved CT specimen is similar to the cases of pipes with small crack angles (60° and 120°).
Journal ArticleDOI
The effect of isothermal heat treatment on hydrogen environment-assisted cracking susceptibility in Monel K-500
Zachary D. Harris,James T. Burns +1 more
TL;DR: In this article, the effect of isothermal heat treatment on hydrogen environment-assisted cracking (HEAC) susceptibility in a single heat of Monel K-500 was evaluated via slow-rising stress intensity (K) testing while immersed in 0.6 M NaCl solution and exposed to applied potentials ranging from −1000 to −1200 mVSCE (vs. saturated calomel electrode).
References
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Book
The mathematical theory of plasticity
TL;DR: In this paper, the solution of two-dimensional non-steady motion problems in two dimensions is studied. But the solution is not a solution to the problem in three dimensions.
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Numerical Solution of Ordinary and Partial Differential Equations
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Local yielding and extension of a crack under plane stress
G.T Hahn,A. R. Rosenfield +1 more
TL;DR: In this article, the size of locally yielded regions, the stress distribution, and displacements attending a crack in tension under plane stress have been calculated by extending the work of Dugdale and others.
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Contained plastic deformation near cracks and notches under longitudinal shear
TL;DR: In this paper, an exact linear elastic-perfectly plastic solution for the problem of sharp notch (or, when the notch angle is zero, a crack) in a plane of finite width subjected to anti-plane stresses inducing a stress and deformation state of longitudinal shear is presented.
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