WebJan 2, 2008 · Disclinations were first observed in mesomorphic phases. They were later found relevant to a number of ill-ordered condensed-matter media involving continuous symmetries or frustrated order. Disclinations also appear in polycrystals at the edges of grain boundaries; but they are of limited interest in solid single crystals, where they can … WebAug 1, 2009 · Disclinations are characterized by typical singularities and the property of multi-value of the fields of displacement and rotation associated with the defects. We …
Fundamental Aspects of Dislocation Interactions - 1st Edition
WebApr 1, 2014 · This paper studies the stress field and crack nucleation behavior in a disclinated nanowire with a continuum model. The surface stress effects of the nanowire is accounted for with the Gurtin-Murdoch model. The Green’s functions for the stress fields of a single wedge disclination and a single edge dislocation in a cylindrical nanowire are … Web1 D defects (line-shaped) are either disclinations or dislocations, only the latter is considered here. The line vector s → and the Burgers vector b → are the main characteristics of a … electoral roll barnsley south yorkshire
Cracks at disclinated grain boundaries in graphene - IOPscience
Webdislocations in solids Amit Acharya1yand Claude Fressengeas2z 1Carnegie Mellon University, Pittsburgh, USA 2Laboratoire d’Etude des Microstructures et ... coupled dislocations and so-called disclinations have been the subject of extensive enquiry, e.g. [Kon55, Bil60, KL92, CMB06], and therefore we show how our g.disclinations can be … WebMar 2, 2016 · It is known that a disclination is a strong source of internal stresses and energy, one possible way for the relaxation of the stresses can be in the form of an initiated crack. In the current work, the nucleated Zener-Stroh crack is simulated by a series of edge dislocations with distributed dislocation method. WebJun 1, 1981 · The Technological Institute, Department of Civil Engineering, Northwestern University, Evanston, Ill. 60201 food safe knife oil