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Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile
The excellent mechanical properties of graphene have enabled it as appealing candidate in the field of impact protection or protective shield. By considering a monolayer graphene membrane, in this work, we assessed its deformation mechanisms under hypervelocity impact (from 2 to 6 km/s), based on a...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020609/ https://www.ncbi.nlm.nih.gov/pubmed/27618989 http://dx.doi.org/10.1038/srep33139 |
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author | Xia, Kang Zhan, Haifei Hu, De’an Gu, Yuantong |
author_facet | Xia, Kang Zhan, Haifei Hu, De’an Gu, Yuantong |
author_sort | Xia, Kang |
collection | PubMed |
description | The excellent mechanical properties of graphene have enabled it as appealing candidate in the field of impact protection or protective shield. By considering a monolayer graphene membrane, in this work, we assessed its deformation mechanisms under hypervelocity impact (from 2 to 6 km/s), based on a serial of in silico studies. It is found that the cracks are formed preferentially in the zigzag directions which are consistent with that observed from tensile deformation. Specifically, the boundary condition is found to exert an obvious influence on the stress distribution and transmission during the impact process, which eventually influences the penetration energy and crack growth. For similar sample size, the circular shape graphene possesses the best impact resistance, followed by hexagonal graphene membrane. Moreover, it is found the failure shape of graphene membrane has a strong relationship with the initial kinetic energy of the projectile. The higher kinetic energy, the more number the cracks. This study provides a fundamental understanding of the deformation mechanisms of monolayer graphene under impact, which is crucial in order to facilitate their emerging future applications for impact protection, such as protective shield from orbital debris for spacecraft. |
format | Online Article Text |
id | pubmed-5020609 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-50206092016-09-20 Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile Xia, Kang Zhan, Haifei Hu, De’an Gu, Yuantong Sci Rep Article The excellent mechanical properties of graphene have enabled it as appealing candidate in the field of impact protection or protective shield. By considering a monolayer graphene membrane, in this work, we assessed its deformation mechanisms under hypervelocity impact (from 2 to 6 km/s), based on a serial of in silico studies. It is found that the cracks are formed preferentially in the zigzag directions which are consistent with that observed from tensile deformation. Specifically, the boundary condition is found to exert an obvious influence on the stress distribution and transmission during the impact process, which eventually influences the penetration energy and crack growth. For similar sample size, the circular shape graphene possesses the best impact resistance, followed by hexagonal graphene membrane. Moreover, it is found the failure shape of graphene membrane has a strong relationship with the initial kinetic energy of the projectile. The higher kinetic energy, the more number the cracks. This study provides a fundamental understanding of the deformation mechanisms of monolayer graphene under impact, which is crucial in order to facilitate their emerging future applications for impact protection, such as protective shield from orbital debris for spacecraft. Nature Publishing Group 2016-09-13 /pmc/articles/PMC5020609/ /pubmed/27618989 http://dx.doi.org/10.1038/srep33139 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Xia, Kang Zhan, Haifei Hu, De’an Gu, Yuantong Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title | Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title_full | Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title_fullStr | Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title_full_unstemmed | Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title_short | Failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
title_sort | failure mechanism of monolayer graphene under hypervelocity impact of spherical projectile |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020609/ https://www.ncbi.nlm.nih.gov/pubmed/27618989 http://dx.doi.org/10.1038/srep33139 |
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