On the use of the Peak Stress Method for the calculation of Residual Notch Stress Intensity Factors: a preliminary investigation [PDF]
, 2017 Residual stresses induced by welding processes significantly affect the engineering properties of structural components. If the toe region of a butt-welded joint is modeled as a sharp V-notch, the distribution of the residual stresses in that zone is ...
BERTO, FILIPPO +5 more
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Key aspects in 3D fatigue crack closure numerical modelling [PDF]
, 2018 Since long time, fatigue crack closure has been studied by means of finite element models. Initially by bi-dimensional models and recently, due to the higher computational capabilities, the use of three-dimensional models has been extended, providing a
Camas, Daniel +2 more
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Crack paths under mixed mode loading [PDF]
, 2008 Long fatigue cracks that initially experience mixed mode displacements usually change direction in response to cyclic elastic stresses. Eventually the cracks tend to orient themselves into a pure mode I condition, but the path that they take can be ...
Andersson +35 more
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Correlation between the pivot node concept and fatigue crack closure [PDF]
, 2018 The study of fatigue crack growth has been commonly done by means of bi-dimensional models and assuming a homogeneous behaviour through the thickness. According to the specimen thickness, a state of plane stress or plane strain is presumed.
Camas, Daniel +2 more
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Towards the understanding of variable amplitude fatigue [PDF]
, 2015 Fatigue life estimation is of high importance during the design stage of a machine or component. Basic fatigue calculations are made based on the use of an S-N curve. As far as constant amplitude loads are applied, this approach works well. However, most
Chhith, Saosometh +2 more
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Predicting fatigue crack growth rate in a welded butt joint: The role of effective R ratio in accounting for residual stress effect [PDF]
, 2009 A simple and efficient method is presented in this paper for predicting fatigue crack growth rate in welded butt joints. Three well-known empirical crack growth laws are employed using the material constants that were obtained from the base material ...
Servetti, Guido, Zhang, X.
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A numerical analysis of the plastic wake influence on plasticity induced crack closure [PDF]
, 2017 Fatigue crack closure has been studied by means of finite element method since long time ago. Most work has been performed considering bi-dimensional models. Lately, the use of threedimensional models has been extended.
Antunes, F.V. +3 more
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Can Delta Keff be assumed as the driving force for fatigue crack growth?
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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Study of the stress intensity factors in the bulk of the material with synchrotron diffraction [PDF]
, 2017 Artículo de Proceedings de Congreso Internacional Fatigue2017In this work we present the results of a hybrid experimental and analytical approach for estimating the stress intensity factor.
Buslaps, T +5 more
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Analysis of damage and fracture formulations in cold extrusion [PDF]
, 2017 In forming processes, components generally undergo large deformations. This induces the evolution of damage, which can influence material and product properties.
Clausmeyer, Till +2 more
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