Results 31 to 40 of about 493 (138)
Numerical Modelling of Roughness and Plasticity Induced Crack Closure Effects in Fatigue [PDF]
Materials Science Forum, 2000 The incidence of roughness induced fatigue crack closure has been studied by finite element modelling. Closure analyses in the literature have been reviewed and been shown to lack a reasonable treatment of: (a) propagating elastic-plastic cracks, and (b) the influence of the characteristically inhomogeneous plastic deformation associated with near ...
Parry, M.R. +2 more
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Hydrogen-Accelerated Fatigue of API X60 Pipeline Steel and Its Weld
Metals, 2023 In this work, the hydrogen fatigue of pipeline steel X60, its girth welds and weld defects were investigated through in situ fatigue testing. A novel in situ gaseous hydrogen charging fatigue set-up was developed, which involves a sample geometry that ...
Lorenzo Etienne Faucon +5 more
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The effect of grain size on the fatigue overload behaviour of nickel
Materials & Design, 2020 The fatigue overload behaviours of coarse grain (~30 μm), ultrafine grain (360 nm) and nanocrystalline (~30 nm) Ni are compared under constant amplitude loading at R = 0.1 after a 100% overload. Synchrotron X-ray diffraction is applied to map the elastic
Wen Zhang +6 more
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On the Distinction Between Plasticity- and Roughness-Induced Fatigue Crack Closure [PDF]
Metallurgical and Materials Transactions A, 2012 A series of experiments has been carried out to determine why some alloys display plasticity-induced fatigue crack closure (PIFCC), whereas other alloys display roughness-induced crack closure (RIFCC). Two alloys were studied, the aluminum alloy 6061-T6 (PIFCC) and a steel of comparable yield strength, S25C (RIFCC).
Sotomi Ishihara +2 more
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Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
Applied Sciences, 2019 Selective Laser Melting (SLM) is an additive manufacturing technology, ideal for the production of complex-shaped components. Design against fatigue is fundamental in the presence of cyclic loads, particularly for these materials which typically have ...
Fernando Antunes +6 more
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An Integral Formulation of Two-Parameter Fatigue Crack Growth Model
Advances in Materials Science and Engineering, 2018 A two-parameter fatigue crack growth algorithm in integral form is proposed, which can describe the continuous crack growth process over the time period.
Jianguo Wu +3 more
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Closure Effect of I + II Mixed-mode Crack for EA4T Axle Steel
Chinese Journal of Mechanical EngineeringThe crack-closure effect is a crucial factor that affects the crack growth rate and should be considered in simulation analysis and testing. A mixed-mode I + II loading fatigue crack growth test was performed using EA4T axle steel specimens.
Shuancheng Wang +4 more
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Short fatigue crack growth in welded joints described by the effective cyclic J-integral
MATEC Web of Conferences, 2018 The purpose of the present contribution is to predict the fatigue life of welded joints by using the effective cyclic J-integral as crack driving force.
Tchoffo Ngoula Désiré +1 more
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Numerical Simulation of the Effect of Pre-Strain on Fatigue Crack Growth in AA2024-T351
MetalsThe objective here is to study the effect of pre-strain on fatigue crack growth (FCG) in 2024-T351 aluminum alloy. Three pre-strain conditions were considered: without pre-strain, compressive and tensile permanent pre-strains of 4%.
Diogo M. Neto +3 more
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Modeling of creep-fatigue interaction effects on crack growth at elevated temperatures
MATEC Web of Conferences, 2018 The well-known load frequency effect on creep-fatigue crack growth is explained by the interactions between fatigue and creep loading and is quantified using the concept of plasticity-induced crack closure.
Potirniche Gabriel P.
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