On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles

In the current paper, the effects of interface fiber angles on the characteristics of R-curve and the cohesive law shape of end-notch-flexure specimens are investigated using numerical and empirical methods. To this aim, laminated composites manufactured by E-glass/epoxy with 0//θ interface where θ ...

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Autores principales:	M. Salamat-Talab, M.M. Shokrieh, M. Mohaghegh
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Delamination Interface fiber angle End-notch-flexure Cohesive zone model Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/cedc199419ae4abd93bbf9d54022aa38
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spelling	oai:doaj.org-article:cedc199419ae4abd93bbf9d54022aa382021-11-24T04:25:52ZOn the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles0142-941810.1016/j.polymertesting.2020.106992https://doaj.org/article/cedc199419ae4abd93bbf9d54022aa382021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820322212https://doaj.org/toc/0142-9418In the current paper, the effects of interface fiber angles on the characteristics of R-curve and the cohesive law shape of end-notch-flexure specimens are investigated using numerical and empirical methods. To this aim, laminated composites manufactured by E-glass/epoxy with 0//θ interface where θ = 0, 15, 45, 60, and 90 were fabricated and tested. The mode II laminated fracture toughness and the cohesive shear traction-separation model were obtained irrespective of the impact of the remote-ply orientation. The empirical results showed that as the interface fiber angle rises, the crack growth behavior in the samples becomes more stable which is evident in the augmented length of the steady-state fracture process zone. Furthermore, the maximum bearable load of specimens drops considerably. Also, the delamination toughness propagation is approximately identical for all specimens. This is the case even if the initiation of delamination toughness is significantly reduced by increasing the interface fiber angle. After parameter identification of the cohesive zone model and conducting numerical analyses, it was demonstrated that this model with the proposed linear-exponential softening behavior can estimate the load-displacement response of samples that display a pronounced R-curve behavior.M. Salamat-TalabM.M. ShokriehM. MohagheghElsevierarticleDelaminationInterface fiber angleEnd-notch-flexureCohesive zone modelPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106992- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Delamination Interface fiber angle End-notch-flexure Cohesive zone model Polymers and polymer manufacture TP1080-1185
spellingShingle	Delamination Interface fiber angle End-notch-flexure Cohesive zone model Polymers and polymer manufacture TP1080-1185 M. Salamat-Talab M.M. Shokrieh M. Mohaghegh On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
description	In the current paper, the effects of interface fiber angles on the characteristics of R-curve and the cohesive law shape of end-notch-flexure specimens are investigated using numerical and empirical methods. To this aim, laminated composites manufactured by E-glass/epoxy with 0//θ interface where θ = 0, 15, 45, 60, and 90 were fabricated and tested. The mode II laminated fracture toughness and the cohesive shear traction-separation model were obtained irrespective of the impact of the remote-ply orientation. The empirical results showed that as the interface fiber angle rises, the crack growth behavior in the samples becomes more stable which is evident in the augmented length of the steady-state fracture process zone. Furthermore, the maximum bearable load of specimens drops considerably. Also, the delamination toughness propagation is approximately identical for all specimens. This is the case even if the initiation of delamination toughness is significantly reduced by increasing the interface fiber angle. After parameter identification of the cohesive zone model and conducting numerical analyses, it was demonstrated that this model with the proposed linear-exponential softening behavior can estimate the load-displacement response of samples that display a pronounced R-curve behavior.
format	article
author	M. Salamat-Talab M.M. Shokrieh M. Mohaghegh
author_facet	M. Salamat-Talab M.M. Shokrieh M. Mohaghegh
author_sort	M. Salamat-Talab
title	On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
title_short	On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
title_full	On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
title_fullStr	On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
title_full_unstemmed	On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
title_sort	on the r-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/cedc199419ae4abd93bbf9d54022aa38
work_keys_str_mv	AT msalamattalab onthercurveandcohesivelawofglassepoxyendnotchflexurespecimenswith0thinterfacefiberangles AT mmshokrieh onthercurveandcohesivelawofglassepoxyendnotchflexurespecimenswith0thinterfacefiberangles AT mmohaghegh onthercurveandcohesivelawofglassepoxyendnotchflexurespecimenswith0thinterfacefiberangles
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On the R-curve and cohesive law of glass/epoxy end-notch flexure specimens with 0//θ interface fiber angles

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