Impact resistance of composite to aluminum single lap joints reinforced with graphene doped nylon 6.6 nanofibers

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dc.contributor.authorYilmaz, Musa
dc.contributor.authorEkrem, Muersel
dc.contributor.authorAvci, Ahmet
dc.date.accessioned2024-02-23T14:03:08Z
dc.date.available2024-02-23T14:03:08Z
dc.date.issued2024
dc.departmentNEÜen_US
dc.description.abstractIn this study, the low velocity impact resistance of pure and modified epoxy adhesives for single lap joints be-tween aluminum and carbon epoxy composites was investigated. Epoxy resin was used as the adhesive, and pure epoxy resin was modified by adding graphene-doped nylon 6.6 nanofibers (1%, 3% and 5% by weight) and pure nylon 6.6 nanofibers produced by electrospinning. These nanofibers are reinforced to aluminum-composite single lap joints as a second interface according to ASTM D1002-10 standard. Thus, single lap joints were pre-pared using 5 different adhesives. To create the impact effect, some joints were subjected to impact at a low velocity (1.04 m/s). Then, all impacted and non-impacted samples were subjected to single lap shear testing at room temperature and constant load to determine the impact resistance. While the non-impact lap shear strength of the pure epoxy adhesive samples was 6.81 MPa, the non-impact shear strength of the samples using pure nanofiber reinforced epoxy adhesive increased by 71.3% to 11.67 MPa compared to the pure epoxy adhesive. When comparing the post-impact failure loads, it was determined that the addition of graphene increases the impact resistance. Furthermore, adhesive surfaces were examined by scanning electron microscopy (SEM) for damage analysis after the tensile tests and toughening mechanisms such as bridging, adhesive crack formation, nanofibers breakage was determined in epoxy adhesives reinforced nanofiber with graphene in different pro-portions by weight. In addition, the glass transition temperature, melting temperature, thermal decomposition temperature and mass loss of epoxy resin, and graphene doped/undoped N6.6 nanofiber-reinforced epoxy ad-hesives were analyzed by Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA) and it was determined that the addition of 3% GNP to N6.6 nanofiber reinforcement increased the thermal stability by 12.4%, the addition of 1% GNP to N6.6 nanofiber reinforcement increased the thermal resistance (glass tran-sition temperature) by 34.9% compared pure epoxy.en_US
dc.identifier.doi10.1016/j.ijadhadh.2023.103565
dc.identifier.issn0143-7496
dc.identifier.issn1879-0127
dc.identifier.scopus2-s2.0-85177213830en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijadhadh.2023.103565
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11969
dc.identifier.volume128en_US
dc.identifier.wosWOS:001120269900001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofInternational Journal Of Adhesion And Adhesivesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAdhesionen_US
dc.subjectSingle Lap Jointsen_US
dc.subjectLow-Velocity Impacten_US
dc.subjectNanofibersen_US
dc.subjectElectrospinningen_US
dc.titleImpact resistance of composite to aluminum single lap joints reinforced with graphene doped nylon 6.6 nanofibersen_US
dc.typeArticleen_US

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