Kinetics of cracks nucleation on materials interface
نویسندگان
چکیده
منابع مشابه
Interface Cracks
-Properties of elastic solutions to interface crack problems are discussed in both the open formulation, in which the crack faces are assumed to be traction-free and interpenetration is permitted, and the unilateral formulation, where a contact zone is generally established adjacent to the crack tips. It is shown that if the contact zone is sufficiently small compared with the other dimensions ...
متن کاملConditions of Nucleation and Interface Propagation in Thermoplastic Materials
Nucleation and interface propagation criteria are derived with account for temperature variation in the course of phase transition (PT) and internal variables. A model problem concerning the nucleation of thin inclined infinite layer in a rigid-plastic half-space under prescribed normal and shear stresses is solved. Nontrivial effect of shear stress on the PT pressure is shown.
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چکیده این تحقیق " مواد درسی " را به عنوان یکی از بحث برانگیزترین موضوعات آموزش زبان تلقی کرده و درتلاش است به سه سوال عمده پاسخ دهد: 1) آیا بکارگیری جزوات گرداوری شده توسط گروهی از مدرسین تاثیر بسزایی در میزان توانش خواندن و درک متون انگلیسی دانشجویان پزشکی دارد؟ 2) آیا استفاده از مواد درسی اصلی( بین المللی )، توانش خواندن و درک متون انگلیسی دانشجویان پزشکی را به طور چشمگیری تحت تاثیر قرار م...
15 صفحه اولNucleation of cracks in a brittle sheet.
We use molecular dynamics to study the nucleation of cracks in a two-dimensional material without pre-existing cracks. We study models with zero and nonzero shear moduli. In both situations, the time required for crack formation obeys an Arrhenius law, from which the energy barrier and prefactor are extracted for different system sizes. For large systems, the characteristic time of rupture is f...
متن کاملExterior Interface Cracks
Abstract-Continuing a recent investigation of interface cracks, attention is paid to the exterior crack. Two elastic solids bonded over a finite segment of their boundary and capable of transmitting shear and tensile tractions are considered. It is found that one of the edge cracks remains completely closed under shear alone, and opens gradually as the level of tension is increased. Both crack ...
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ژورنال
عنوان ژورنال: Procedia Structural Integrity
سال: 2017
ISSN: 2452-3216
DOI: 10.1016/j.prostr.2017.11.081