The effects of nanostructure additive on fracture strength in adhesively bonded joints subjected to fully reversed four-point bending fatigue load

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dc.authoridAKPINAR, Salih/0000-0003-3247-991X
dc.contributor.authorDemir, Kubra
dc.contributor.authorGavgali, Esma
dc.contributor.authorYetim, Ali Fatih
dc.contributor.authorAkpinar, Salih
dc.date.accessioned2024-10-04T18:53:54Z
dc.date.available2024-10-04T18:53:54Z
dc.date.issued2021
dc.departmentBayburt Üniversitesien_US
dc.description.abstractStructural adhesive joints used in aerospace are usually subjected to fatigue loading rather than static loading. This study experimentally and numerically investigated the static four-point bending loads of adhesively bonded joints after fully reversed four-point bend fatigue loading where nanoadhesives - obtained by adding carbon nanostructures into aerospace grade structural adhesive - were used to bond the joints. Single lap joint specimens were produced using a nanocomposite adhesive obtained by adding 1 wt % graphene, 1 wt % carbon nanotubesCOOH and 1 wt % fullerene C60 nanostructures to a DP460 structural adhesive. AA2024-T3 aluminum alloy and carbon fiber-reinforced composites (CFRCs) with a plain weave fabric (0/90 degrees) were used as adherend materials. First, static four-point bending tests were applied to these joints to obtain their strengths and then fully reversed sinusoidal fatigue tests were applied under a constant load amplitude, a frequency of 20 Hz and a load ratio of R = -1. Fatigue tests were performed over 1,000,000 cycles - accepted as an infinite life - at four different load levels by considering the strengths obtained from the static tensile tests. After obtaining the static four-point bending strengths of the joints to which fatigue loading was applied, the changes in the strengths of joints with and without fatigue testing were examined. The static strengths of aluminum joints bonded with nanoadhesive and subjected to fully reversed fatigue loading significant increased, depending on the nanostructure type added to the adhesive. Moreover, such increases in the strengths of joints are highly dependent on the adherend type (composite with [0/90]6 stacking sequence or AA2024-T3 aluminum).en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey-TUBITAK [119M666]en_US
dc.description.sponsorshipThis study was financially supported by The Scientific and Technological Research Council of Turkey-TUBITAK through the Project no. 119M666.en_US
dc.identifier.doi10.1016/j.ijadhadh.2021.102943
dc.identifier.issn0143-7496
dc.identifier.issn1879-0127
dc.identifier.scopus2-s2.0-85111003167en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijadhadh.2021.102943
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3782
dc.identifier.volume110en_US
dc.identifier.wosWOS:000684536200004en_US
dc.identifier.wosqualityQ2en_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.subjectNanocompositeen_US
dc.subjectFractureen_US
dc.subjectStrengthen_US
dc.subjectFour-point bending testen_US
dc.subjectResistance to fatigueen_US
dc.subjectBonded jointsen_US
dc.titleThe effects of nanostructure additive on fracture strength in adhesively bonded joints subjected to fully reversed four-point bending fatigue loaden_US
dc.typeArticleen_US

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