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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Fatigue crack growth in 2017A-T4 alloy subjected to proportional bending with torsion
TL;DR: In this paper, the results of tests on the fatigue crack growth for a constant moment amplitude under combined bending with torsion in the aluminium alloy AW-2017A-T4 were presented.
Journal ArticleDOI
Effects of morphology on the tensile and fatigue behavior of a dual-phase steel
TL;DR: Sun, ZM (reprint author), ACAD SINICA, INST MET RES, NATL LAB FATIGUE & FRACTURE,SHENYANG,PEOPLES R CHINA as mentioned in this paper
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Material characteristics at 3D-mixed-mode-loadings
Hans Albert Richard,A. Eberlein +1 more
TL;DR: In this article, the 3D-mixed-mode criteria for cyclic loadings are compared with experimental determined threshold values under 3D mixed-mode loadings for different materials as well as crack kinking and twisting angles.
Journal ArticleDOI
Development of multiple ordered fracture in an elastic homogeneous, structured and layered medium
TL;DR: In this paper, a series of fracture processes accompanied by formation of structures of cracks (violations) are presented, and an influence of various mechanisms of local brittle fracture in the vicinities of pores and micro-cracks on the material bearing capacity at complex stress state is considered.
Journal ArticleDOI
Mixed-Mode I and II fatigue threshold and crack closure in dual-phase steels
Y. S. Zheng,Z.G. Wang,S.H. Ai +2 more
TL;DR: In this paper, the effect of shear and tensile crack growth on mixed-mode fatigue threshold was studied in dual-phase steels with two types of volume fraction of martensite in laboratory air at room temperature.
References
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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.