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The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy

Thin-skinned organic matrix composites within aeronautical structures are subjected to thermooxidative aging during their service life, leading to reductions in their durability. In this paper, a durability evaluation of fiberglass epoxy prepreg is performed on the original composite thickness befor...

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Main Authors: Khajeh, Amin, Mustapha, Faizal, Hameed Sultan, Mohamed Thariq, Banhegyi, Gyorgy, Karacsony, Zsuzsanna, Baranyai, Viktor
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2015
Online Access:http://psasir.upm.edu.my/id/eprint/46572/1/The%20effect%20of%20thermo-oxidative%20aging%20on%20the%20durability%20of%20glass%20fiber-reinforced%20epoxy.pdf
http://psasir.upm.edu.my/id/eprint/46572/
http://www.hindawi.com/journals/amse/
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spelling my.upm.eprints.465722018-02-26T04:19:23Z http://psasir.upm.edu.my/id/eprint/46572/ The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy Khajeh, Amin Mustapha, Faizal Hameed Sultan, Mohamed Thariq Banhegyi, Gyorgy Karacsony, Zsuzsanna Baranyai, Viktor Thin-skinned organic matrix composites within aeronautical structures are subjected to thermooxidative aging during their service life, leading to reductions in their durability. In this paper, a durability evaluation of fiberglass epoxy prepreg is performed on the original composite thickness before and after 800 h isothermal aging at 82°C. The characterization of both aged and unaged composites comprised tensile tests, DMA, FTIR, weight loss measurements, SEM, and DSC. The tensile strength and modulus of the composites increased after being exposed to pronounced aging conditions, whereas a decrease was observed in the toughness. DMA results revealed that the glass transition temperature and rubbery state modulus increased as a result of the thermooxidative aging. FTIR spectroscopy demonstrated the formation of carbonyl compounds due to oxidation of the chemical structure of the resin. SEM observations indicated the existence of minor superficial cracking and poor fiber-matrix adhesion after aging. In addition, a minor mass change was observed from mass loss monitoring methods. The overall findings suggest that postcuring and physical aging enhanced the brittleness of the resin, leading to a significant decline in the useful structural life of the thin-skinned composite. Hindawi Publishing Corporation 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46572/1/The%20effect%20of%20thermo-oxidative%20aging%20on%20the%20durability%20of%20glass%20fiber-reinforced%20epoxy.pdf Khajeh, Amin and Mustapha, Faizal and Hameed Sultan, Mohamed Thariq and Banhegyi, Gyorgy and Karacsony, Zsuzsanna and Baranyai, Viktor (2015) The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy. Advances in Materials Science and Engineering, 2015. art. no. 372354. pp. 1-13. ISSN 1687-8434; ESSN: 1687-8442 http://www.hindawi.com/journals/amse/ 10.1155/2015/372354
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Thin-skinned organic matrix composites within aeronautical structures are subjected to thermooxidative aging during their service life, leading to reductions in their durability. In this paper, a durability evaluation of fiberglass epoxy prepreg is performed on the original composite thickness before and after 800 h isothermal aging at 82°C. The characterization of both aged and unaged composites comprised tensile tests, DMA, FTIR, weight loss measurements, SEM, and DSC. The tensile strength and modulus of the composites increased after being exposed to pronounced aging conditions, whereas a decrease was observed in the toughness. DMA results revealed that the glass transition temperature and rubbery state modulus increased as a result of the thermooxidative aging. FTIR spectroscopy demonstrated the formation of carbonyl compounds due to oxidation of the chemical structure of the resin. SEM observations indicated the existence of minor superficial cracking and poor fiber-matrix adhesion after aging. In addition, a minor mass change was observed from mass loss monitoring methods. The overall findings suggest that postcuring and physical aging enhanced the brittleness of the resin, leading to a significant decline in the useful structural life of the thin-skinned composite.
format Article
author Khajeh, Amin
Mustapha, Faizal
Hameed Sultan, Mohamed Thariq
Banhegyi, Gyorgy
Karacsony, Zsuzsanna
Baranyai, Viktor
spellingShingle Khajeh, Amin
Mustapha, Faizal
Hameed Sultan, Mohamed Thariq
Banhegyi, Gyorgy
Karacsony, Zsuzsanna
Baranyai, Viktor
The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
author_facet Khajeh, Amin
Mustapha, Faizal
Hameed Sultan, Mohamed Thariq
Banhegyi, Gyorgy
Karacsony, Zsuzsanna
Baranyai, Viktor
author_sort Khajeh, Amin
title The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
title_short The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
title_full The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
title_fullStr The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
title_full_unstemmed The effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
title_sort effect of thermo-oxidative aging on the durability of glass fiber-reinforced epoxy
publisher Hindawi Publishing Corporation
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/46572/1/The%20effect%20of%20thermo-oxidative%20aging%20on%20the%20durability%20of%20glass%20fiber-reinforced%20epoxy.pdf
http://psasir.upm.edu.my/id/eprint/46572/
http://www.hindawi.com/journals/amse/
_version_ 1643833789299818496
score 13.211869

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