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dc.contributor.authorPlagianakos, Theofanis S.
dc.contributor.authorMuñoz, Kirsa
dc.contributor.authorGuillamet, Gerard
dc.contributor.authorPrentzias, Vasileios
dc.contributor.authorQuintanas-Corominas, Adrià
dc.contributor.authorJimenez, Miguel
dc.contributor.authorKarachalios, Evangelos
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationPlagianakos, T.S. [et al.]. Assessment of CNT-doping and hot-wet storage aging effects on Mode I, II and I/II interlaminar fracture toughness of a UD Graphite/Epoxy material system. "Engineering Fracture Mechanics", 1 Febrer 2020, vol. 224, 106761.
dc.description.abstractThe interlaminar fracture toughness of two unidirectional Graphite/Epoxy composite material systems has been experimentally assessed. The systems studied were prepreg composite and prepreg composite treated with carbon nanotubes (CNT). The fracture toughness has been quantified in Mode I, Mode II and Mode I/II by performing DCB, ENF and MMB tests according to relevant ISO and ASTM standards. The effect of aging by storage under hot-wet conditions has been quantified by studying these systems at room temperature without aging and at 70 °C after aging treatment. Experimental data are reported in a 3- or 5-specimen batch mode, indicating non-linear behavior and sensitivity to imperfections in coupons alignment and load application. Moreover, intermediate variables required for the estimation of fracture toughness are presented in order to be used as a reference guide for principal fracture test data evaluation. In the case of the RT systems, measured data have been compared with analytical solutions and finite element model predictions yielding good correlation for DCB and ENF tests and considerable deviation in the case of MMB tests. Main findings include that CNT-doping leads to an increase of fracture toughness in all modes, especially in Mode II, and that aging leads to less variation in measurements for both systems, indicating a more uniform matrix response.
dc.description.sponsorshipThe current work has received funding from EU Horizon 2020 Clean Sky II project SHERLOC (Structural Health Monitoring, Manufacturing and Repair Technologies for Life Management of Composite Fuselage) under Grant Agreement No CS2-AIR-GAM-2014-2015-01. The authors from HAI would like to thank our ex-colleagues Dimitrios Habas and Stavros Kalogeropoulos for their major assistance with coupons fabrication and experimental work, respectively.
dc.format.extent40 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.subjectÀrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Aplicacions informàtiques a la física i l‘enginyeria
dc.subject.lcshComputer simulation
dc.subject.lcshComposite materials--Mechanical properties
dc.subject.lcshCarbon nanotubes
dc.subject.otherGraphite/Epoxy composite material systems
dc.subject.otherAging of materials
dc.subject.otherFracture toughness testing
dc.subject.otherCarbon nanotubes
dc.subject.otherASTM standards
dc.subject.otherComposite Laminates
dc.titleAssessment of CNT-doping and hot-wet storage aging effects on Mode I, II and I/II interlaminar fracture toughness of a UD Graphite/Epoxy material system
dc.subject.lemacSimulació per ordinador
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/807083/EU/AIRFRAME ITD/GAM AIR 2018
local.citation.publicationNameEngineering Fracture Mechanics

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