نتایج جستجو برای: crack modelling
تعداد نتایج: 186386 فیلتر نتایج به سال:
Assessment of thermo-mechanical fatigue behaviour of the polycrystalline nickel alloy RR1000 reveals a significant effect of phase angle on fatigue life. The current paper explores two scenarios: the first where the mechanical strain range is held constant and comparisons of the fatigue life are made for different phase angle tests; and secondly, the difference between the behaviour of In-phase...
We have proposed a new model for microcrack detection by osteocytes in bone. According to this model, cell signalling is initiated by the cutting of cellular processes which span the crack. We show that shear displacements of the crack faces are needed to rupture these processes, in an action similar to that of a pair of scissors. Current work involves a combination of cell biology experiments,...
We present a new technique for reconstructing thin shapes of fixed thickness from boundary electrical measurements. The main application which we have in mind is crack detection, but the approach is not limited to that. We introduce an extension of the level set technique for modelling thin shapes. Two level set functions are employed in order to achieve this: the first one models the location ...
As a natural biocomposite, Strombus gigas, commonly known as the giant pink queen conch shell, exhibits outstanding mechanical properties, especially a high fracture toughness. It is known that the basic building block of conch shell contains a high density of growth twins with average thickness of several nanometres, but their effects on the mechanical properties of the shell remain mysterious...
The service life of hydrogel-based devices is strongly influenced by the anti-fatigue capability hydrogels. While recent advancements in synthesis hydrogels have improved their fatigue resistance, underlying mechanisms that dominate time-dependent crack growth are still poorly understood. In this study, a computational method developed to predict A physics-based poro-visco-hyperelastic model wi...
An interaction integral method for evaluating mixed-mode stress intensity factors (SIFs) for two dimensional crack problems using NURBS-based isogeometric analysis method is investigated. The interaction integral method is based on the path independent J-integral. By introducing a known auxiliary field solution, the mixed-mode SIFs are calculated simultaneously. Among features of B-spline basis...
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