$Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites$
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Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites

In this article, mode II fracture toughness (GIIc{G}_{\text{IIc}}) of unidirectional E-glass/vinyl ester composites subjected to sulfuric acid aging is studied at two different temperatures (25 and 90°C). Specimens were manufactured using the hand lay-up method with the [0]20{{[}0]}_{20} stacking se...

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Autores principales:	Salamt-Talab Mazaher, Delzendehrooy Fatemeh, Akhavan-Safar Alireza, Safari Mahdi, Bahrami-Manesh Hossein, da Silva Lucas Filipe Martins
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	acid aging mode ii fracture toughness unidirectional composites degradation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/c28cf94322d2453e90b77e67e54734c5
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spelling	oai:doaj.org-article:c28cf94322d2453e90b77e67e54734c52021-12-05T14:11:03ZEnvironmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites2191-035910.1515/secm-2021-0028https://doaj.org/article/c28cf94322d2453e90b77e67e54734c52021-07-01T00:00:00Zhttps://doi.org/10.1515/secm-2021-0028https://doaj.org/toc/2191-0359In this article, mode II fracture toughness (GIIc{G}_{\text{IIc}}) of unidirectional E-glass/vinyl ester composites subjected to sulfuric acid aging is studied at two different temperatures (25 and 90°C). Specimens were manufactured using the hand lay-up method with the [0]20{{[}0]}_{20} stacking sequence. To study the effects of environmental conditions, samples were exposed to 30 wt% sulfuric acid at room temperature (25°C) for 0, 1, 2, 4, and 8 weeks. Some samples were also placed in the same solution but at 90°C and for 3, 6, 9, and 12 days to determine the interlaminar fracture toughness at different aging conditions. Fracture tests were conducted using end notched flexure (ENF) specimens according to ASTM D7905. The results obtained at 25°C showed that mode II fracture toughness increases for the first 2 weeks of aging and then it decreases for the last 8 weeks. It was also found that the flexural modulus changes with the same trend. Based on the results of the specimens aged at 90°C, a sharp drop in fracture toughness and flexural modulus with a significant decrease in maximum load have been observed due to the aging. Finite element simulations were performed using the cohesive zone model (CZM) to predict the global response of the tested beams.Salamt-Talab MazaherDelzendehrooy FatemehAkhavan-Safar AlirezaSafari MahdiBahrami-Manesh Hosseinda Silva Lucas Filipe MartinsDe Gruyterarticleacid agingmode ii fracture toughnessunidirectional compositesdegradationMaterials of engineering and construction. Mechanics of materialsTA401-492ENScience and Engineering of Composite Materials, Vol 28, Iss 1, Pp 382-393 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	acid aging mode ii fracture toughness unidirectional composites degradation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	acid aging mode ii fracture toughness unidirectional composites degradation Materials of engineering and construction. Mechanics of materials TA401-492 Salamt-Talab Mazaher Delzendehrooy Fatemeh Akhavan-Safar Alireza Safari Mahdi Bahrami-Manesh Hossein da Silva Lucas Filipe Martins Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
description	In this article, mode II fracture toughness (GIIc{G}_{\text{IIc}}) of unidirectional E-glass/vinyl ester composites subjected to sulfuric acid aging is studied at two different temperatures (25 and 90°C). Specimens were manufactured using the hand lay-up method with the [0]20{{[}0]}_{20} stacking sequence. To study the effects of environmental conditions, samples were exposed to 30 wt% sulfuric acid at room temperature (25°C) for 0, 1, 2, 4, and 8 weeks. Some samples were also placed in the same solution but at 90°C and for 3, 6, 9, and 12 days to determine the interlaminar fracture toughness at different aging conditions. Fracture tests were conducted using end notched flexure (ENF) specimens according to ASTM D7905. The results obtained at 25°C showed that mode II fracture toughness increases for the first 2 weeks of aging and then it decreases for the last 8 weeks. It was also found that the flexural modulus changes with the same trend. Based on the results of the specimens aged at 90°C, a sharp drop in fracture toughness and flexural modulus with a significant decrease in maximum load have been observed due to the aging. Finite element simulations were performed using the cohesive zone model (CZM) to predict the global response of the tested beams.
format	article
author	Salamt-Talab Mazaher Delzendehrooy Fatemeh Akhavan-Safar Alireza Safari Mahdi Bahrami-Manesh Hossein da Silva Lucas Filipe Martins
author_facet	Salamt-Talab Mazaher Delzendehrooy Fatemeh Akhavan-Safar Alireza Safari Mahdi Bahrami-Manesh Hossein da Silva Lucas Filipe Martins
author_sort	Salamt-Talab Mazaher
title	Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
title_short	Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
title_full	Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
title_fullStr	Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
title_full_unstemmed	Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites
title_sort	environmental effects on mode ii fracture toughness of unidirectional e-glass/vinyl ester laminated composites
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/c28cf94322d2453e90b77e67e54734c5
work_keys_str_mv	AT salamttalabmazaher environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites AT delzendehrooyfatemeh environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites AT akhavansafaralireza environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites AT safarimahdi environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites AT bahramimaneshhossein environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites AT dasilvalucasfilipemartins environmentaleffectsonmodeiifracturetoughnessofunidirectionaleglassvinylesterlaminatedcomposites
_version_	1718371444173307904

Environmental effects on mode II fracture toughness of unidirectional E-glass/vinyl ester laminated composites

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