Zobrazeno 1 - 10
of 15
pro vyhledávání: '"A. R. Cleave"'
Publikováno v:
Materials & Design. 34:541-551
The ballistic response of composite structures comprising differing laminated float glass/polycarbonate replacement resin (PRR) elements was studied. In order to provide materials data for future modelling work, sphere-impact tests were employed to d
Autor:
J.B. Ball, Samuel T. Murphy, Blas P. Uberuaga, Kurt E. Sickafus, Roger Smith, Robin W. Grimes, A. R. Cleave
Publikováno v:
Solid State Ionics. 180:1-8
The mechanisms by which Mg(2+) and Al(3+) ions are transported through the MgAl(2)O(4) spinel lattice are investigated using atomic scale computer simulation. Both vacancy and interstitial cation processes are considered. Stable vacancies can be gene
Autor:
L. Kittiratanawasin, A. R. Cleave, Robin W. Grimes, Roger Smith, Blas P. Uberuaga, Kurt E. Sickafus
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 266:2691-2697
Molecular dynamics simulations of collision cascades were performed in Er2O3 to determine the displacement energy thresholds, the main types of defects that form and the structure of the collision cascades. The displacement energy thresholds have a s
Autor:
Arthur F. Voter, Roger Smith, A. R. Cleave, Robin W. Grimes, Blas P. Uberuaga, Kurt E. Sickafus
Publikováno v:
Journal of Computer-Aided Materials Design. 14:183-189
Understanding how the defects formed during radiation damage evolve with time is a key component to predicting materials performance during irradiation. This problem is inherently multiscale, involving time scales from ps to years and length scales f
Autor:
Michael J.D. Rushton, Blas P. Uberuaga, A. R. Cleave, Kurt E. Sickafus, Christopher R. Stanek, Robin W. Grimes
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 255:151-157
Atomic scale computer simulation is used to study four defect related processes across a broad range of A 2 3 + B 2 4 + O 7 composition that exhibit pyrochlore or the parent fluorite structures. The first set of results concern the energy for a local
Autor:
E. Skomedal, E. Vikhagen, R. Cleave, P. Meldahl, Peter Hanssen, K.J. Tjøm, A. Brendsdal, T. Bakke
Publikováno v:
Proceedings.
Statoil has developed a new multicomponent seismic sensor (“Temprei camera”) to increase acquisition efficiency, flexibility and access to complex sites like offshore installations. Acquisition can be improved, because the contactless sensor does
Autor:
Blas P. Uberuaga, Kurt E. Sickafus, A. R. Cleave, Robin W. Grimes, Arthur F. Voter, Roger Smith
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 250:12-16
Using temperature accelerated dynamics, we examine the kinetic behavior of interstitial clusters in both pure and Al-doped MgO. We find that penta-interstitials in pure MgO can form at least three different structures, each with unique kinetic proper
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 250:28-35
Atomic scale molecular dynamics simulations of displacement cascades are carried out in an initially defect-free MgO lattice and in a lattice where 0.2% of the Mg 2+ ions have been replaced by Al 3+ ions, charge compensated by magnesium vacancies. Re
Publikováno v:
Philosophical Magazine. 85:967-980
Fluorite-related ceramics have attracted considerable attention as potential host materials for the immobilisation of radionuclides. Here we have used computer simulation to investigate the relative solution energies and mechanisms for Pu3+, Pu4+ and
Autor:
A. R. Cleave, Christopher R. Stanek, Chao Jiang, Blas P. Uberuaga, Robin W. Grimes, Kurt E. Sickafus
Publikováno v:
Physical Review B. 80
A combination of atomistic simulation techniques has been employed to predict ordered structures for a series of ${A}_{4}{B}_{3}{\text{O}}_{12}$ $\ensuremath{\delta}$-phase compounds, where $A$ is a $3+$ cation ranging in size from ${\text{Sc}}^{3+}$