Results 21 to 30 of about 9,005 (275)
Growth of inclined fatigue cracks using the biaxial CJP model [PDF]
Fracture and Structural Integrity, 2015 The CJP model of crack tip stresses is a modified version of the Williams crack tip stress field which takes account of simplified stress distributions that arise from the presence of a zone of plastic deformation associated with the crack flanks and ...
G. Laboviciute +3 more
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MATEC Web of Conferences, 2018 This paper reports on a computational study and experimental validation of creep-fatigue crack growth rates at high temperature in two structural materials.
Ramirez Jose +6 more
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Can Keff be assumed as the driving force for fatigue crack growth? [PDF]
Fracture and Structural Integrity, 2015 This work raises some new questions about the validity of blindly assuming that Elber’s effective stress intensity factor is the actual fatigue crack driving force, and that as so it can be used to explain all load sequence effects on fatigue crack ...
J.T.P. Castro +2 more
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Materials & Design, 2021 Numerous efforts have been devoted to produce reliable additive manufactured (AM) materials for structural applications. However, the critical fatigue issue poses a significant hurdle in relation to the nature of this production method.
Juan Guillermo Santos Macías +5 more
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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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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 a laser shock peened residual stress field [PDF]
, 2019 Laser Shock Peening is a surface treatment technique used in the aerospace sector to increase fatigue life, as well as resistance to fretting fatigue and stress corrosion cracking.
Achintha +19 more
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Analysis of Plasticity-induced Crack Closure of Fatigue Crack Interacting with Microstructure.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 2000 The propagation behavior of small fatigue cracks was numerically simulated to evaluate the development of crack closure with crack growth. The effect of the interaction between crack-tip slip band and grain boundaries on plasticity-induced crack closure was analyzed under plane stress condition.
Yoshiaki AKINIWA +2 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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