Results 231 to 240 of about 2,711,142 (273)

Investigation of fatigue crack growth under constant amplitude loading

International Journal of Pressure Vessels and Piping, 1990
Abstract Crack propagation experiments were performed on 6061-T6 Al alloy for various load ranges and stress ratios. Experimental results show that for a constant load range, the life of the specimen decreased as the stress ratio increased. At constant maximum load, the life of the specimen increased as the load ratio increased. The crack growth data
Raghuvir Kumar, A.K Pandey
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THE RANDOMNESS OF FATIGUE CRACK GROWTH UNDER CONSTANT‐AMPLITUDE LOADS

Fatigue & Fracture of Engineering Materials & Structures, 1996
Abstract—An analysis of fatigue crack growth from an statistical point of view has been carried out. Eighteen pre‐cracked specimens obtained from the same sheet of aluminium alloy were subjected to identical load and environmental conditions. Tests were conducted under constant‐amplitude loads in order to isolate the effect of material randomness.
C. Lapetra, J. Mayo, J. Dominguez
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Total Fatigue Life Prediction under Constant Amplitude Loading

Materials Science Forum, 2011
This paper applies the fracture-mechanics-based analysis and the crack-closure concept to naturally occurring small cracks and large crack growth, and to make total fatigue life predictions solely based on crack growth from the assumed initial materials defect.
Yu Ting He, Wen Jun Shu, Rong Hong Cui, Li Ming Wu, Jin Qiang Du   +4 more
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Growth of surface cracks under constant and variable amplitude loading

Engineering Fracture Mechanics, 2004
Fatigue crack growth experiments were performed on surface cracked tensile specimens of Inconel 718 at 400 °C. The loading was carried out at constant as well as at variable amplitude. The experimental results for the mean growth rate were compared with predictions based on data obtained from testing of compact tension specimens.
F. Nilsson, T. Hansson, T. Månsson
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Review on crack closure for constant amplitude loading in fatigue

Engineering Fracture Mechanics, 1992
Abstract This article reviews the literature on crack closure for CAL in fatigue published since 1970. The review shows that during fatigue crack propagation the crack closure is affected by the material properties (σ y , σ f ), K max , stress range (Δσ), crack length, strain hardening component ( n ), environment and ...
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Notch FCI life under constant amplitude uniaxial loads

International Journal of Structural Integrity, 2010
PurposeThe purpose of this paper is to estimate the number of cycles for fatigue crack initiation in notched plates.Design/methodology/approachPreviously published experimental results for tests with initially uncracked U‐shaped notches of different sizes and geometries are utilized. The present work defines the fatigue initiation period, Ni, as number
M.M.I. Hammouda, I.G. El‐Batanony
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Experimental study of the constant-probability crack growth curves under constant amplitude loading

Engineering Fracture Mechanics, 1987
Abstract This paper is concerned with the application of a mathematical model that describes the fatigue crack growth evolution and associated scatter in polycrystalline solids. The model has been built on the basis that an analogy exists between a particular discontinuous Markovian stochastic process, namely the general pure birth process, and the ...
Ghonem, H., Dore, S.
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Fatigue Crack Closure Evaluation Under Constant Amplitude and Spectrum Loading

Journal of Testing and Evaluation, 2003
Abstract Fatigue crack growth behavior of through-the-thickness cracks emanating from the notch root in an aluminum alloy was investigated with particular emphasis on the evaluation of crack closure and its effects on fatigue crack growth rate.
BK Parida, CM Manjunatha, HM Girish
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Peridynamic Fatigue Model for Composites Under Constant and Variable Amplitude Loads

American Society for Composites 2019, 2019
In previous presented work [1], the authors developed a bond-based peridynamic composite approach with explicit incorporation of fiber and matrix material regions. This explicit definition of fiber and matrix material regions enabled the capturing of anisotropic behavior, but required careful and laborious determination of peridynamic material ...
ERDOGAN MADENCI, ATILA BARUT, NAM PHAN
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Cumulative Damage Under Constant Amplitude and Variable Amplitude Loading: Some New Physical Aspects

1987
From systematic investigations of typical stages of metallic materials, subjected to different types of loading histories, a strong correlation between the cyclic deformation processes, characteristic changes of temperature and the microstructural mechanisms could be identified.
K. Middeldorf, H. Nowack, A. Fischer, H. Harig   +3 more
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