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Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact
The influence of hygrothermal aging on high-velocity impact damage of carbon fiber-reinforced polymer (CFRP) laminates is investigated. Composite laminate specimens were preconditioned in water at 70 °C. The laminates were subsequently impacted by flat-, sphere-, and cone- ended projectiles with vel...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6317049/ https://www.ncbi.nlm.nih.gov/pubmed/30545087 http://dx.doi.org/10.3390/ma11122525 |
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author | Liu, Xiang Gu, Weimin Liu, Qiwen Lai, Xin Liu, Lisheng |
author_facet | Liu, Xiang Gu, Weimin Liu, Qiwen Lai, Xin Liu, Lisheng |
author_sort | Liu, Xiang |
collection | PubMed |
description | The influence of hygrothermal aging on high-velocity impact damage of carbon fiber-reinforced polymer (CFRP) laminates is investigated. Composite laminate specimens were preconditioned in water at 70 °C. The laminates were subsequently impacted by flat-, sphere-, and cone- ended projectiles with velocities of 45, 68, and 86 m/s. The incident and residual velocities were collected during the impact test. The impact-induced damages were measured by ultrasonic C-scan, a digital microscope system, and a scanning electron microscope. The results show that the hygrothermally conditioned laminates offer a higher energy absorption during high-velocity impact. Due to the weakening of the interlaminar properties, the hygrothermally conditioned laminates are more susceptible to delamination failure, and shear-induced debonding dominates. The projected delamination area increases with the increment of impact velocity. The damaged region becomes close to a circular shape after hydrothermal conditioning, and close to a rhomboidal shape for the dry specimens. |
format | Online Article Text |
id | pubmed-6317049 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63170492019-01-08 Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact Liu, Xiang Gu, Weimin Liu, Qiwen Lai, Xin Liu, Lisheng Materials (Basel) Article The influence of hygrothermal aging on high-velocity impact damage of carbon fiber-reinforced polymer (CFRP) laminates is investigated. Composite laminate specimens were preconditioned in water at 70 °C. The laminates were subsequently impacted by flat-, sphere-, and cone- ended projectiles with velocities of 45, 68, and 86 m/s. The incident and residual velocities were collected during the impact test. The impact-induced damages were measured by ultrasonic C-scan, a digital microscope system, and a scanning electron microscope. The results show that the hygrothermally conditioned laminates offer a higher energy absorption during high-velocity impact. Due to the weakening of the interlaminar properties, the hygrothermally conditioned laminates are more susceptible to delamination failure, and shear-induced debonding dominates. The projected delamination area increases with the increment of impact velocity. The damaged region becomes close to a circular shape after hydrothermal conditioning, and close to a rhomboidal shape for the dry specimens. MDPI 2018-12-12 /pmc/articles/PMC6317049/ /pubmed/30545087 http://dx.doi.org/10.3390/ma11122525 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Xiang Gu, Weimin Liu, Qiwen Lai, Xin Liu, Lisheng Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title | Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title_full | Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title_fullStr | Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title_full_unstemmed | Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title_short | Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact |
title_sort | damage of hygrothermally conditioned carbon epoxy composites under high-velocity impact |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6317049/ https://www.ncbi.nlm.nih.gov/pubmed/30545087 http://dx.doi.org/10.3390/ma11122525 |
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