High strain rate behavior of graphene-epoxy nanocomposites

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dc.authorid0000-0002-2515-7624en_US
dc.contributor.authorColak, Ozgen U.
dc.contributor.authorBahlouli, Nadia
dc.contributor.authorUzunsoy, Deniz
dc.contributor.authorFrancart, Charles
dc.date.accessioned2021-03-20T20:12:22Z
dc.date.available2021-03-20T20:12:22Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.description.abstractThis work consists of the synthesis of high purity graphene nanoflakes (GNF), the manufacturing of GNF-epoxy nanocomposites and the mechanical characterization of the nanocomposite at high and quasi static strain rates, (2750/s - 1.E 5/s). GNF were synthesized by using the electric arc discharge technique. Thermogravimetry/ Differential Thermal Analysis (TG/DTA) of synthesized graphene reveals high purity and high crystallinity. Raman spectra and the broad Brunauer-Emmet-Teller (BET) specific surface area indicate that the synthesized graphene has several layers. Following the solution mixing manufacturing process of GNF-epoxy nanocomposites, the influences of strain rate on the mechanical behaviors are investigated under quasi static and dynamic loadings. High strain rate uniaxial compression tests (1270-2750/s) using Split Hopkinson Pressure Bar (SHPB) and quasi static compression tests (1.E-3 and 1.E-5/s) of GNF-epoxy with two graphene contents (0.1 and 0.5 wt %) are performed at room temperature. The maximum elasticity modulus achieved by the GNF-epoxy with 0.5 wt% at the strain rate of 2350/s corresponds to a 68% increase compared to the neat epoxy. The yield strength of the material is doubled under dynamic loading conditions compared to the quasi static loading.en_US
dc.identifier.doi10.1016/j.polymertesting.2019.106219en_US
dc.identifier.issn0142-9418
dc.identifier.issn1873-2348
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.polymertesting.2019.106219
dc.identifier.urihttps://hdl.handle.net/20.500.12885/519
dc.identifier.volume81en_US
dc.identifier.wosWOS:000525303900013en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorUzunsoy, Deniz
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofPolymer Testingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectGraphene-epoxy nanocompositeen_US
dc.subjectSplit hopkinson baren_US
dc.subjectCompression testen_US
dc.subjectElectric arc discharge techniqueen_US
dc.titleHigh strain rate behavior of graphene-epoxy nanocompositesen_US
dc.typeArticleen_US

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