NDLI: RETRACTED ARTICLE: All-Atom Molecular-Level Analysis of the Ballistic-Impact-Induced Densification and Devitrification of Fused Silica

Content Provider	Springer Nature Link
Author	Grujicic, M. Snipes, J. S. Ramaswami, S. Yavari, R. Barsoum, R. S.
Copyright Year	2015
Abstract	All-atom molecular-level computations are carried out to infer the dynamic response and material microstructure/topology changes of fused silica subjected to ballistic impact by a hard projectile. The analysis was focused on the investigation of specific aspects of the dynamic response and of the microstructural changes such as the deformation of highly sheared and densified regions and the conversion of amorphous fused silica to SiO$_{2}$ crystalline allotropic modifications (in particular, α-quartz and stishovite). The microstructural changes in question were determined by carrying out a post-processing atom-coordination procedure. This procedure suggested the formation of stishovite (and perhaps α-quartz) within fused silica during ballistic impact. To rationalize the findings obtained, the all-atom molecular-level computational analysis is complemented by a series of quantum-mechanics density functional theory (DFT) computations. The latter computations enable determination of the relative potential energies of the fused silica, α-quartz, and stishovite under ambient pressure (i.e., under their natural densities) as well as under imposed (as high as 50 GPa) pressures (i.e., under higher densities) and shear strains. In addition, the transition states associated with various fused-silica devitrification processes were identified. The results obtained are found to be in good agreement with their respective experimental counterparts.
Starting Page	2970
Ending Page	2983
Page Count	14
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	24
Issue Number	8
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2015-06-27
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	all-atom molecular-level analyses fused silica quantum-mechanical density functional theory (DFT) analyses quartz stishovite Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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Retraction Note to: All-Atom Molecular-Level Analysis of the Ballistic-Impact-Induced Densification and Devitrification of Fused Silica

The Effect of High-Pressure Devitrification and Densification on Ballistic-Penetration Resistance of Fused Silica

Retraction Note to: All-Atom Molecular-Level Analysis of the Ballistic-Impact-Induced Densification and Devitrification of Fused Silica

RETRACTED ARTICLE: Multi-Length Scale Analysis of the Effect of Fused-Silica Pre-shocking on its Tendency for Devitrification

Molecular-Level Analysis of Shock-Wave Physics and Derivation of the Hugoniot Relations for Fused Silica

Retraction Note to: Multi-Length Scale Analysis of the Effect of Fused-Silica Pre-shocking on its Tendency for Devitrification

The Effect of High-Pressure Devitrification and Densification on Ballistic-Penetration Resistance of Fused Silica

The effect of fused-silica pre-shocking on its devitrification propensity and ballistic resistance: an all-atom molecular-level analysis

Densification and Devitrification of Fused Silica Induced by Ballistic Impact: A Computational Investigation

RETRACTED ARTICLE: All-Atom Molecular-Level Analysis of the Ballistic-Impact-Induced Densification and Devitrification of Fused Silica

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