Micromechanical study on the origin of fiber bridging under interlaminar and intralaminar mode I failure

Naya Montans, Fernando; Pappas, G.; Botsis, J.

Publication:
Micromechanical study on the origin of fiber bridging under interlaminar and intralaminar mode I failure

dc.affiliation.dpto	UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras	es
dc.contributor.author	Naya Montans, Fernando
dc.contributor.author	Pappas, G.
dc.contributor.author	Botsis, J.
dc.date.accessioned	2022-02-08T08:45:04Z
dc.date.available	2022-02-08T08:45:04Z
dc.date.issued	2019-02-15
dc.description.abstract	Fiber reinforced polymers (FRPs) subjected to mode I fracture show important toughening due to the development of large scale bridging (LSB). Experimental studies of this phenomenon in unidirectional carbon/epoxy laminates using double cantilever beam specimens, demonstrate important differences in R-curve response for inter- and intralaminar fracture. Post fracture observation of composite’s cross-section pointed out dissimilar fiber bundle size and shape, as the main origin of their differences. In the present paper, representative volume elements with the composite’s constituents, based on the actual material microstructure, and homogenized 2D finite element models were developed to study the effects of microstructure on the first stage of damage leading to LSB development in carbon/epoxy composites under mode I fracture. The differences between inter- and intralaminar fracture were investigated along with the influence of fiber dispersion and the presence of interply and intraply resin-rich zones. The numerical simulations captured different microcrack morphologies for inter- and intralaminar fracture, supporting the experimental observations, while parametric studies showed the influence of the microstructure in the formation of LSB. In particular, fiber dispersion within a ply and resin rich zone between plies play significant roles in mode I fracture and can be used to control toughening mechanisms in FRPs.	en
dc.format.extent	15
dc.identifier.bibliographicCitation	Naya, F., Pappas, G. & Botsis, J. (2019). Micromechanical study on the origin of fiber bridging under interlaminar and intralaminar mode I failure. Composite Structures, 210, 877–891.	en
dc.identifier.doi	https://doi.org/10.1016/j.compstruct.2018.11.064
dc.identifier.issn	0263-8223
dc.identifier.publicationfirstpage	877
dc.identifier.publicationlastpage	891
dc.identifier.publicationtitle	Composite Structures	en
dc.identifier.publicationvolume	210
dc.identifier.uri	https://hdl.handle.net/10016/34061
dc.identifier.uxxi	CC/0000032909
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.rights	© 2018 Elsevier Ltd. All rights reserved.	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Ingeniería Mecánica	es
dc.subject.other	Polymer-matrix composites (PMCs)	en
dc.subject.other	Computational micromechanics (RVE)	en
dc.subject.other	Intralaminar	en
dc.subject.other	Interlaminar	en
dc.subject.other	Microstructure	en
dc.subject.other	Fiber bridging & fracture toughness	en
dc.title	Micromechanical study on the origin of fiber bridging under interlaminar and intralaminar mode I failure	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication