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Showing papers in "International Journal of Fatigue in 1995"


Journal ArticleDOI
TL;DR: In this paper, the influence of out-of-phase loading on fatigue life is severely overestimated if conventional hypotheses are used, however, the introduced hypotheses of the effective equivalent stress leads to fairly good predictions.

208 citations


Journal ArticleDOI
TL;DR: In this article, shotpeeing was found to affect crack behavior by delaying both crack initiation and crack propagation, and cracks were formed preferentially at the specimen edges, and the crack propagation was higher in the depth direction than along the surface, giving initial quarterelliptical crack fronts with the major axis along the thickness direction.

148 citations


Journal ArticleDOI
TL;DR: In this paper, a micromechanics model that includes the effects of the fibre-matrix interface is used in a simple cumulative damage scheme to predict the tensile fatigue behavior of composite laminates.

133 citations


Journal ArticleDOI
Jun-Hyub Park1, Ji-Ho Song1
TL;DR: Using extensive experimental strain-life curve data on 116 steels, 16 aluminium alloys and six titanium alloys, nearly all methods currently available for estimation of fatigue properties from simple tensile data are discussed in detail as discussed by the authors.

107 citations


Journal ArticleDOI
TL;DR: In this article, a review of the fatigue notch factor, Kf, and some expressions for it that are in current use is presented, which can be classified into three types: the average stress model, the fracture mechanics model and the stress field intensity model analysis.

99 citations


Journal ArticleDOI
TL;DR: In this paper, a unified approach to the effect of mean stress (or stress ratio R) on the threshold conditions, i.e., fatigue limit and threshold stress intensity factor range, is presented.

92 citations


Journal ArticleDOI
TL;DR: In this article, the stress concentration problem of round and flat bars with V-shaped notches under various loadings is especially important for test specimens used to investigate the fatigue strength of materials.

86 citations


Journal ArticleDOI
TL;DR: In this paper, a review of experimental data from cyclic plasticity investigation performed on two structural steels was carried out to determine the influence of ratchet strain accumulation on fatigue life.

83 citations


Journal Article
TL;DR: In this article, the results of fatigue crack growth rate tests conducted in the presence of residual stresses are discussed with reference to experimental trends, in order to clarify the predictive capabilities of the method and aspects needing further investigation.

77 citations


Journal ArticleDOI
TL;DR: In this paper, the main features of the path taken by a propagating fatigue crack are discussed, and the application of chaos theory to crack paths is explored briefly, and it is found that the concept of attractor helps in qualitative descriptions.

68 citations


Journal ArticleDOI
TL;DR: In this article, a variable-amplitude blockloading history consisting of high, near-yield-stress, underloads or compression-tension overloads followed by constant amplitude small cycles was used to examine underload and compression-Tension overload induced reductions in crack closure and the subsequent build-up of crack-opening stress to its steady-state level in a 2024-T351 aluminium alloy.

Journal ArticleDOI
TL;DR: In this article, the effects of loading non-normality and frequency bandwidth and truncation on the rate of fatigue damage accumulation were compared with predictions made using Rayleigh approximation and rainflow analysis in terms of cycles and time to failure.

Journal ArticleDOI
TL;DR: In this article, the influence of microstructure and microporosity on fatigue crack initiation and propagation in AlSi7Mg cast alloy has been investigated at very high numbers of cycles.

Journal ArticleDOI
TL;DR: In this paper, the global strain energy release rate G (GI or GII or GT) for crack growth in the adhesive parallel to the interface has been evaluated using the finite element method, where the fatigue crack growth and quasi-static fracture under mixed-mode loading were controlled by a local mode I mechanism whereby filler particles fractured under the maximum tensile stress and the microcracks so formed subsequently linked up.

Journal ArticleDOI
TL;DR: In this paper, the influence of room-temperature low-cycle fatigue deformation on the microstructure and the consequent modification of the LCF behaviour were examined in the case of AISI 304LN stainless steel and the superalloy Nimonic 90.

Journal ArticleDOI
J. Wan1, Ali Fatemi1
TL;DR: In this paper, the effect of ion-nitriding process on axial fatigue and deformation behavior of SAE 1045 steel was investigated using smooth specimens at room temperature, and several cumulative fatigue damage models were used to predict the fatigue life in overstrain tests.

Journal ArticleDOI
TL;DR: In this paper, the authors derived the fatigue strength distribution as a function of the number of cycles to failure in the stationary random loading process and used the stress-strength interference technique to calculate reliability.

Journal ArticleDOI
TL;DR: In this paper, the early propagation stages of fatigue cracks along the toe of automatic bead-on-plate welds in a structural steel are studied, and three methods to introduce a controlled degree of waviness on the weld toe, to optimize the degree of crack interaction during fatigue growth, were tested: arc rotation, variable arc voltage and variable weld speed.

Journal ArticleDOI
P.C. Wang1
TL;DR: In this article, a correlation between the fatigue life of a laser weld and its J-integral values has been developed, which holds for a useful range of weld dimensions, and can be used to predict the effects of geometric variables on the fatigue resistance of laser welds.

Journal ArticleDOI
TL;DR: In this paper, a model for short and long crack growth was developed by employing elastic plastic fracture mechanics parameters to predict the total fatigue life of a specimen, and these crack growth equations derived from air fatigue tests conducted at stresses above the fatigue limit were applied to the crack growth results obtained from intermittent air fatigue/corrosion fatigue tests carried out at subfatigue limit stress levels.

Journal ArticleDOI
J.P. Chubb1
TL;DR: In this article, the effect of exfoliation corrosion on fracture toughness and fatigue crack growth of a high-strength structural aluminium alloy (7178-T6) was considered, and the results showed that the presence of corrosion enhances the fatigue crack rate at intermediate ΔK values.

Journal ArticleDOI
TL;DR: In this article, a study has been made to understand the low-cycle fatigue properties and cyclic fracture characteristics of 2014 aluminium alloy discontinuously reinforced with varying amounts of Al 2 O 3 particulates.

Journal ArticleDOI
TL;DR: In this article, the behavior of laminated tee joints under fatigue loading was investigated and failure mechanisms under static load conditions were explored, and the results of the fatigue test programme were then documented from viewpoints related to stiffness loss, degradation mechanisms and cumulative damage aspects.

Journal ArticleDOI
TL;DR: In this article, three-dimensional finite element studies were conducted on hot-spot stresses for a tubular T-joint under combined axial and bending loading, and the results for the peak hotspot stress were compared with the results obtained from the API RP2A code procedure using a superposition method for combined loading.

Journal ArticleDOI
TL;DR: In this paper, the fatigue behavior of center-notched specimens of a 2024-T351 aluminium alloy was examined under a variable-amplitude loading sequence consisting of a periodic compression-tension overload of yield magnitude followed by smaller high stress ratio cycles.

Journal ArticleDOI
TL;DR: In this paper, a new dynamic interference statistical model for fatigue reliability analysis is presented, where the non-linearity of fatigue damage accumulation has been taken into account, and this model is able to predict the fatigue reliability for random spectrum loading.

Journal ArticleDOI
TL;DR: In this paper, the influence of specimen thickness on the fatigue crack growth response of a carbon manganese structural steel following a single tensile overload has been investigated, and a linear relationship exists between the retardation, in terms of the logarithm of the delay cycles, and specimen thickness.

Journal ArticleDOI
TL;DR: In this paper, the effect on microstructure and fatigue threshold of tension-tension fatigue at stress below the fatigue limit and high cycles (107) was studied, and the results indicated that the fatigue threshold is lowered after low-stress, high-cycle fatigue: the higher the stress, the greater the decrease of fatigue threshold.

Journal ArticleDOI
TL;DR: In this paper, the effect of crack closure on the propagation of semi-elliptical fatigue cracks is investigated, and the results of an experimental investigation of the impact of crack closures on the performance of load-shedding fatigue threshold tests were carried out at stress ratios of 0.2, 0.5 and 0.7.

Journal ArticleDOI
TL;DR: In this article, a life prediction model under variable-amplitude loading was proposed to predict the fatigue crack initiation (FCI) life of low carbon steels with non-continuous strain-hardening characteristics.