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Mechanical behavior of high dosage short carbon fiber reinforced epoxy composites

2017-06Journal article Restricted access
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dc.contributor.authorCapela, C.
dc.contributor.authorOliveira, S. E.
dc.contributor.authorFerreira, J. A. M.
dc.date.accessioned2025-09-04T16:11:53Z
dc.date.available2025-09-04T16:11:53Z
dc.date.issued2017-06
dc.description.abstractShort fibers are effective reinforcements in strengthening and toughening polymer materials, even small amounts of fibers. However, for high fiber dosage the achieved dispersion and interface adhesion is quite poor reaching to lower stiffness and strength efficiency. In high dosage composites, the effects of the fiber length and volume fraction on mechanical properties is not entirely consensual; nonetheless this paper intends to contibute for a better understanding of this occurrence. Composite plates were manufactured by compression moulding, using short carbon fibers reinforcements (2, 4 and 6 mm in length) with 45-75 % wt fiber fraction. Tensile and dynamic mechanical analysis (DMA) specimens were machined from molded plates for the desired dimensions. DMA was performed with bi-supported specimens in temperature ranged from 20 to 180 oC. High dosage composites exhibit very low efficiency parameters both in stiffness and particularly in tensile strength. However, the stiffness increases in order of 25 % when fiber length increases from 2 mm to 4 mm, but afterwards tends to decrease for 6 mm fiber length composites. The same tendency was observed for the tensile strength. For very high fiber dosage composites, tensile strength decreases and Young’s modulus tends to remain at constant values. However, the results of DMA indicate that bending modulus storage increases when fiber length increases from 2 mm to 6 mm.eng
dc.description.sponsorshipThis research was sponsored by FEDER funds through the program COMPETE - Programa Operacional Factores de Competitividade - and by national funds through FCT - Fundação para a Ciência e a Tecnologia -, under the project PEst-C/EME/UI0285/2013.
dc.identifier.citationCapela, C., Oliveira, S.E. & Ferreira, J.A.M. Mechanical behavior of high dosage short carbon fiber reinforced epoxy composites. Fibers Polym 18, 1200–1207 (2017). https://doi.org/10.1007/s12221-017-7246-0
dc.identifier.doi10.1007/s12221-017-7246-0
dc.identifier.issn1229-9197
dc.identifier.issn1875-0052
dc.identifier.urihttp://hdl.handle.net/10400.8/13990
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Science and Business Media LLC
dc.relationStrategic Project - UI 285 - 2013-2014
dc.relation.hasversionhttps://link.springer.com/article/10.1007/s12221-017-7246-0
dc.relation.ispartofFibers and Polymers
dc.rights.uriN/A
dc.subjectComposites
dc.subjectMechanical properties
dc.subjectShort fibber composites
dc.titleMechanical behavior of high dosage short carbon fiber reinforced epoxy compositeseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 285 - 2013-2014
oaire.awardURIhttp://hdl.handle.net/10400.8/13285
oaire.citation.endPage1207
oaire.citation.issue6
oaire.citation.startPage1200
oaire.citation.titleFibers and Polymers
oaire.citation.volume18
oaire.fundingStream6820 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCapela
person.givenNameCarlos
person.identifier.ciencia-id9B1E-6857-3D6B
person.identifier.orcid0000-0003-3334-4945
person.identifier.ridG-6395-2016
person.identifier.scopus-author-id7801358401
relation.isAuthorOfPublication9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isAuthorOfPublication.latestForDiscovery9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isProjectOfPublication6b741f11-7fd6-4328-8dbb-0eff4bc07dc1
relation.isProjectOfPublication.latestForDiscovery6b741f11-7fd6-4328-8dbb-0eff4bc07dc1

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