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Sistema gráfico interativo para análise de nucleação e propagação detrincas
(Universidade Federal de Minas GeraisUFMG, 2016-02-29)
This masters thesis is concerned about computational implementation of an interactive graphical software that integrates pre-processor, constitutive models, nonlinear equation solvers and post-processor for analysis of ...
Análise da propagação de trinca por fadiga submetida a carregamento cíclico com razão de carga negativa para a liga AA 6005
(Universidade Estadual Paulista (Unesp), 2016-12-14)
For engineering projects requiring a high degree of reliability, it is necessary to understand, in addition to the physical and chemical properties of the materials, its limits for static and dynamic applications, in order ...
Influence of static strength on the fatigue resistance of welds
(EDP Sciences, 2018-05-25)
The present paper deals with a fracture mechanic approach that employs the Resistance-Curve concept, in order to predict fatigue endurances of welded components, with different tensile strengths of the base metal. The ...
Fatigue assessment of a double submerged arc welded gas pipeline
(Elsevier, 2007-06)
An uncommon blow out in a 24″ diameter, 7 mm thick API 5L X52 gas pipeline was due to fracture at the longitudinal double submerged arc weld (DSAW). Fatigue cracks were found to have initiated from a large embedded weld ...
2D mesoscale model for concrete based on the use of interface element with a high aspect ratio
(2016-09-01)
The mesostructure of concrete plays a very important role in the process of initiation and propagation of cracks. Microcracks tend to start in the Interfacial Transition Zone (ITZ) and propagate toward the mortar matrix ...
Fatigue damage in coarse-grained lean duplex stainless steels
(Elsevier Science Sa, 2016-04)
The present investigation is focused on assessing the effect of a thermal treatment for grain coarsening on the low cycle fatigue damage evolution in two types of Lean Duplex Stainless Steels (LDSSs). The dislocation ...
Avaliação da propagação de trincas em problemas de fadiga por fretting através da implementação de um método semianalítico
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia MecânicaDepartamento de Engenharia Mecânica, 2021)
A lattice discrete element method to model the falling-weight impact test of PMMA specimens
(Elsevier, 2016-01)
It is introduced in this paper a Lattice Discrete Element Method (LDEM) for modelling the falling-
weight test of polymethyl-methacrylate (PMMA) specimens. The method exploits the inherent characteristics
of discrete ...
Crack network monitoring upon curing and drying of high-alumina MgO-containing refractory castable via digital image correlation
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMCâmpus São Carlos, 2020-12-23)
MgO particles are added to high-alumina refractory castable formulations to
form spinel at high temperatures. However, these particles react with water forming brucite, which causes heterogeneous expansions in the material ...