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dc.contributor.authorYudhanto, Arief
dc.contributor.authorAlmulhim, Mohammed
dc.contributor.authorKamal, Faisal
dc.contributor.authorTao, Ran
dc.contributor.authorFatta, L.
dc.contributor.authorAlfano, M.
dc.contributor.authorLubineau, Gilles
dc.date.accessioned2020-08-16T12:54:44Z
dc.date.available2020-08-16T12:54:44Z
dc.date.issued2020-07-29
dc.date.submitted2020-01-29
dc.identifier.citationYudhanto, A., Almulhim, M., Kamal, F., Tao, R., Fatta, L., Alfano, M., & Lubineau, G. (2020). Enhancement of fracture toughness in secondary bonded CFRP using hybrid thermoplastic/thermoset bondline architecture. Composites Science and Technology, 199, 108346. doi:10.1016/j.compscitech.2020.108346
dc.identifier.issn0266-3538
dc.identifier.doi10.1016/j.compscitech.2020.108346
dc.identifier.urihttp://hdl.handle.net/10754/664613
dc.description.abstractStructures made of carbon fiber-reinforced polymer (CFRP) can be assembled using adhesive bonding. However, such bonding is prone to brittle delamination, and a method to improve delamination resistance is desirable. Here, we propose a technique to introduce crack-arrest features that increase the R-curve response by engineering the adhesive bondline/interface. We specifically designed a wavy net-like thermoplastic insert that was embedded into the thermoset adhesive bondline where the new mechanisms of energy dissipation were generated. We demonstrate that the technique is effective at improving mode I fracture toughness of secondary bonded carbon/epoxy by more than 400%. The hybrid thermoset/thermoplastic bondline architecture was carefully tailored to achieve its best performance. We demonstrate that introducing porosities in the adhesive bondline (by adding a limited amount of thermoset adhesive) further improves the fracture toughness. This toughness improvement originates from the extrinsic toughening of the crack-arrest feature, which is enabled by the insert ductility and microstructures (via strand formation, anchoring and stretching).
dc.description.sponsorshipThe research funding was supported by Office of Sponsored Research (OSR) of KAUST (King Abdullah University of Science and Technology) under the award number OSR-CRG2017-3388. We also thank COHMAS Laboratory Researchers: Mr. Anh-Quan Vu for assisting preliminary FRT test, Mr. Omar Qahtani for preliminary DCB test and 3D printing and Dr. Ahmed Wagih for Mode II test data.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0266353820302967
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Composites Science and Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Science and Technology, [199, , (2020-07-29)] DOI: 10.1016/j.compscitech.2020.108346 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleEnhancement of fracture toughness in secondary bonded CFRP using hybrid thermoplastic/thermoset bondline architecture
dc.typeArticle
dc.contributor.departmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalComposites Science and Technology
dc.rights.embargodate2022-08-11
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Mechanical, Energy and Management Engineering, University of Calabria, 87036, Rende, CS, Italy
dc.identifier.volume199
dc.identifier.pages108346
kaust.personYudhanto, Arief
kaust.personAlmulhim, Mohammed
kaust.personKamal, Faisal
kaust.personTao, Ran
kaust.personFatta, L.
kaust.personLubineau, Gilles
kaust.grant.numberCRG2017
dc.date.accepted2020-07-06
dc.identifier.eid2-s2.0-85089192972
refterms.dateFOA2020-08-16T13:18:15Z
kaust.acknowledged.supportUnitCOHMAS
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)
dc.date.published-online2020-07-29
dc.date.published-print2020-10


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