Results 31 to 40 of about 543,146 (298)

Microstructural modifications in tungsten induced by high flux plasma exposure : TEM examination [PDF]

, 2016
We have performed microstructural characterization using transmission electron microscopy (TEM) techniques to reveal nanometric features in the sub-surface region of tungsten samples exposed to high flux, low energy deuterium plasma.
Bakaeva, Anastasiia, De Temmerman, G, Dubinko, Andrii, Hernandez-Mayoral, M, Noterdaeme, Jean-Marie, Terentyev, D   +5 more
core   +1 more source

A continuum model for dislocation dynamics in three dimensions using the dislocation density potential functions and its application in understanding the micro-pillar size effect

, 2015
In this paper, we present a dislocation-density-based three-dimensional continuum model, where the dislocation substructures are represented by pairs of dislocation density potential functions (DDPFs), denoted by $\phi$ and $\psi$.
Xiang, Yang, Zhu, Yichao
core   +2 more sources

Fracture Dislocation of the Anatomical Neck of the Proximal Humerus: Case Report and Literature Review

Case Reports in Orthopedic Research, 2020
Fractures of the anatomical neck of the humerus are an extremely rare pathological entity in the field of orthopedic surgery. One of the most feared complications associated with anatomical neck fracture of the humerus is avascular necrosis (AVN).
Joseph Maalouly, Dany Khalil Aouad, Antonios Tawk, Georges El Rassi   +3 more
doaj   +1 more source

Edge dislocations in crystal structures considered as traveling waves of discrete models [PDF]

, 2003
The static stress needed to depin a 2D edge dislocation, the lower dynamic stress needed to keep it moving, its velocity and displacement vector profile are calculated from first principles.
A. Carpio, A. I. Landau, A. I. Landau, D. Hull, F. R. N. Nabarro, J. P. Hirth, L. L. Bonilla, L. B. Freund, L. D. Landau, N. G. van Kampen   +9 more
core   +3 more sources

Acute traumatic dislocation of the proximal tibiofibular joint: case report and review of the literature.

Revista de la Asociación Argentina de Ortopedia y Traumatología, 2018
Tibiofibular dislocation is uncommon, and it is related to sport injuries as a result of an external rotation trauma with the knee in fully flexed position, and foot pointing inwards and downwards.
Jessica Andrea Suárez Zarrate, Sebastian Rodriguez Serna, Roy Arturo Reyes, Jairo Gallo Diaz, César Rocha Libreros   +4 more
doaj   +1 more source

Melting as a String-Mediated Phase Transition

, 2000
We present a theory of the melting of elemental solids as a dislocation-mediated phase transition. We model dislocations near melt as non-interacting closed strings on a lattice.
A. Ookawa, A.Z. Patashinskii, A.Z. Patashinskii, C. Giannessi, C. Mott, D. Kuhlmann-Wilsdorf, D. R. Nelson, D.A. Lowe, D.R. Nelson, D.R. Nelson, Dean L. Preston, E. Copeland, E. Copeland, E. Copeland, F.W. Wiegel, G.F. Sarafanov, J. Emsley, J. Magueijo, J.M. Kosterlitz, J.P. Hirth, J.P. Poirier, J.P. Poirier, K.J. Strandburg, Leonid Burakovsky, M. Siol, M.B. Green, M.W. Guinan, N.D. Mermin, N.K. Gilra, N.K. Kultanov, N.K. Kultanov, P. Salomonson, P. Salomonson, R. Brandenberger, R.K. Crawford, R.M.J. Cotterill, R.M.J. Cotterill, R.M.J. Cotterill, R.M.J. Cotterill, Richard R. Silbar, S. Mizushima, S.F. Edwards, S.P. Obukhov, T. Ninomiya, T. Vachaspati, T. Yamamoto, T.W.B. Kibble, V.S. Vorob’ev, W. Janke, W. Shockley, W.L. Bragg   +50 more
core   +2 more sources

Stress State Required for Pyramidal Dislocation Movement in Zinc [PDF]

, 1968
A tension or compression stress in such a direction that basal slip is minimized can produce second-order pyramidal slip bands in zinc single crystals. The stress required to initiate pyramidal dislocation motion is not sensitive to temperature. However,
Blish, R. C., II, Vreeland, T., Jr.
core   +1 more source

A unified non-empirical strength model

Frontiers in Materials, 2023
Strength, as an important indicator of structural materials, has always been an important research topic in materials science. Theoretically, building a strength model is a rewarding method to understand the relationship between the mechanical properties
Xing Feng, Guangpeng Sun, Sitong Zhang, Bin Wen   +3 more
doaj   +1 more source

Continuum dynamics of the formation, migration and dissociation of self-locked dislocation structures on parallel slip planes

, 2016
In continuum models of dislocations, proper formulations of short-range elastic interactions of dislocations are crucial for capturing various types of dislocation patterns formed in crystalline materials.
Niu, Xiaohua, Xiang, Yang, Zhu, Yichao
core   +2 more sources

MRI diagnosis in multiligamentous injuries of knee with associated dislocations and neurovasacular sequelae: a retrospective analysis of injury patterns

Egyptian Rheumatology and Rehabilitation, 2019
Background Simultaneous injury of two or more knee ligaments with concurrent tears involving the anterior cruciate and medial collateral ligaments is considered to be associated with femorotibial knee dislocations (KD).
Reddy Ravikanth, Manu J Abraham, Anoop Pilar, Ashok Alapati   +3 more
doaj   +1 more source