Journal ArticleDOI
The fatigue crack direction and threshold behaviour of mild steel under mixed mode I and III loading
TLDR
In this paper, the authors investigate the mixed mode fatigue crack growth threshold behavior of mild steel and show that the expected tendency to Mode I crack growth showed as an initial directional discontinuity followed by a smooth rotation of the crack front until it was almost perpendicular to the specimen sides.About:
This article is published in International Journal of Fatigue.The article was published on 1985-01-01. It has received 111 citations till now. The article focuses on the topics: Crack closure & Crack growth resistance curve.read more
Citations
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Journal ArticleDOI
Mixed mode fatigue crack growth: A literature survey
J. Qian,Ali Fatemi +1 more
TL;DR: In this paper, various criteria and parameters have been proposed in the literature for predicting mixed-mode crack growth directions and rates, and the physical basis and limitations for each criterion are briefly reviewed, and corresponding experimental supports are discussed.
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A 50-year retrospective review of three-dimensional effects at cracks and sharp notches
TL;DR: A review of three-dimensional effects at cracks and sharp notches can be found in this article, where the authors review developments over the past 50 years leading up to the current state of the art.
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Fatigue strength of severely notched specimens made of Ti–6Al–4V under multiaxial loading
TL;DR: In this article, the authors dealt with multiaxial fatigue behavior of severely notched components made of titanium grade 5 alloy (Ti-6Al-4V) under combined Mode I and Mode III loadings, both in phase and out of phase.
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Multiaxial fatigue of V-notched steel specimens: a non-conventional application of the local energy method
TL;DR: In this article, the multi-axial fatigue strength of notched specimens made of 39NiCrMo3 hardened and tempered steel was investigated under two nominal load ratios, R=−1 and R= 0, taking into account the influence of the biaxiality ratio, λ=τa/σa.
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Fatigue strength of structural components under multi-axial loading in terms of local energy density averaged on a control volume
Filippo Berto,Paolo Lazzarin +1 more
TL;DR: In this paper, an approach based on the strain energy density (SED) averaged over a control volume is first used to summarise uniaxial and multi-axial fatigue strength data of welded joints made of structural steels and aluminium alloys.
References
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Journal ArticleDOI
Wide range stress intensity factor expressions for ASTM E 399 standard fracture toughness specimens
TL;DR: In this paper, a polynominal expression is given for the stress intensity factor, K, from the applied force, P, and the specimen dimensions, which is explicitly stated that these expressions should not be used outside the range of relative crack length, a/W.
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Plane elastostatic analysis of V-notched plates
TL;DR: In this paper, the effect of the magnitude of the V-notch angle and specimen geometry on stress intensity factors KI and KII were obtained for unloaded notch surfaces, and it was shown that there is less than one percent difference in opening mode I stress intensity factor in going from a zero degree notch angle to a 30-degree notch angle.
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Inherent Stress Biaxiality in Various Fracture Specimen Geometries
Patrick S. Leevers,J.C. Radon +1 more
TL;DR: In this paper, the crack-length dependence of a parameter expressing the degree of stress biaxiality inherent to a number of standard specimen geometries is investigated, and it is shown that the sensitivity of a given material's sensitivity to stress biasiality is responsible for K1-independent variations in crack behaviour between specimens.
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The effect of crack angle on fracture toughness
TL;DR: In this article, the effect on fracture toughness of a crack inclined at an angle β to the plane of a plate, so that Mode I and Mode III crack surface displacements were present, was investigated using ASTM-type single-edge notch tension specimens made from two aluminium alloys and a tool steel.
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Why do cracks avoid each other
TL;DR: In this paper, the authors investigated the stability of straight crack paths and showed that the straight crack path is unstable, i.e. that tip to tip coalescence will not take place.