Porosity characterization and respective influence on short-beam strength of advanced composite processed by resin transfer molding and compression molding

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dc.contributor.authorSantos, Ana Carolina Mendes Quintanilha Silva [UNESP]
dc.contributor.authorMonticeli, Francisco Maciel [UNESP]
dc.contributor.authorOrnaghi, Heitor [UNESP]
dc.contributor.authorSantos, Luis Felipe de Paula [UNESP]
dc.contributor.authorCioffi, Maria Odila Hilário [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T11:06:13Z
dc.date.available2021-06-25T11:06:13Z
dc.date.issued2020-01-01
dc.description.abstractThis work has been developed for a comparative purpose concerning the processing and respective mechanical performance of CFRP composites processed by resin transfer molding (RTM) and compression molding (CM) techniques. Thermal and viscosimetric tests before processing certified the optimal parameter procedure. Both composites were submitted to short-beam shear tests and through microscopy to determine failure mechanisms. CM specimens presented a decrease of 27% in shear strength caused by the presence of macro porosity that induced crack initiation and connection of different delamination plies, causing the speeding up of crack propagation and jump of the interlaminar layer. The low capillary effect and higher viscous force were responsible for macro porosity, inducing heterogeneous impregnation in CM and to the direction reduce in mechanical behavior. On the other hand, more homogeneous impregnation in RTM specimens was responsible for the absence of macro porosity, ensuring higher values of shear strength and lower void volume fraction.en
dc.description.affiliationDepartment of Materials and Technology Fatigue and Aeronautic Materials Research Group School of Engineering São Paulo State University (UNESP)
dc.description.affiliationUnespDepartment of Materials and Technology Fatigue and Aeronautic Materials Research Group School of Engineering São Paulo State University (UNESP)
dc.identifierhttp://dx.doi.org/10.1177/0967391120968452
dc.identifier.citationPolymers and Polymer Composites.
dc.identifier.doi10.1177/0967391120968452
dc.identifier.issn1478-2391
dc.identifier.issn0967-3911
dc.identifier.scopus2-s2.0-85094872208
dc.identifier.urihttp://hdl.handle.net/11449/208095
dc.language.isoeng
dc.relation.ispartofPolymers and Polymer Composites
dc.sourceScopus
dc.subjectCFRP
dc.subjectcompression molding
dc.subjectporosity
dc.subjectresin transfer molding
dc.subjectshort-beam strength
dc.subjectStructural composites
dc.titlePorosity characterization and respective influence on short-beam strength of advanced composite processed by resin transfer molding and compression moldingen
dc.typeResenha
unesp.author.orcid0000-0003-4737-554X[1]

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