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dc.contributor.authorWagih, A.
dc.contributor.authorTao, Ran
dc.contributor.authorLubineau, Gilles
dc.date.accessioned2021-06-30T08:26:29Z
dc.date.available2021-06-30T08:26:29Z
dc.date.issued2021-06-29
dc.date.submitted2021-02-27
dc.identifier.citationWagih, A., Tao, R., & Lubineau, G. (2021). Bio-inspired adhesive joint with improved interlaminar fracture toughness. Composites Part A: Applied Science and Manufacturing, 106530. doi:10.1016/j.compositesa.2021.106530
dc.identifier.issn1359-835X
dc.identifier.doi10.1016/j.compositesa.2021.106530
dc.identifier.urihttp://hdl.handle.net/10754/669845
dc.description.abstractHerein, a novel adhesive joint that mimics the structure of the bondline of two biological systems that have excellent adhesion, gecko and mytilus californianus, was designed. Sacrificial cracks were embedded inside the adhesive layers to activate new dissipative mechanisms and thus increase the effective interlaminar fracture toughness. A finite element model (FEM) that considered the progressive damage in the adhesive layer and decohesion at both adhesive/adherend interfaces was used to understand the damage mechanisms of the bio-inspired adhesives. Contrary to classical joints that experience interfacial failure, wherein failure occurs at one of the substrate/adherend interfaces, our bio-inspired joints are characterized by crack bifurcation between both sides of the bondline. Thus the developed toughening ligaments cause the propagation of secondary and backward cracks at the lower and upper interfaces under and over the sacrificial cracks, respectively. Such crack branching and fragmentation together with the energy required to break these ligaments improve the effective toughness of the adhesive. Increasing the sacrificial crack width and gap between two successive cracks reduces the toughness through reduction in the allowed surface for secondary and backward crack propagation. The adhesive properties significantly affect this toughening effect that increases with adhesive strength and failure strain.
dc.description.sponsorshipThis research was funded by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award number OSR-2017-CRG6-3388.01.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1359835X21002529
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Composites Part A: Applied Science and Manufacturing. 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 Part A: Applied Science and Manufacturing, [, , (2021-06-29)] DOI: 10.1016/j.compositesa.2021.106530 . © 2021. 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.titleBio-inspired adhesive joint with improved interlaminar fracture toughness
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 Part A: Applied Science and Manufacturing
dc.rights.embargodate2023-06-29
dc.eprint.versionPost-print
dc.identifier.pages106530
kaust.personWagih, A.
kaust.personTao, Ran
kaust.personLubineau, Gilles
kaust.grant.numberOSR-2017-CRG6-3388.01
dc.date.accepted2021-06-16
refterms.dateFOA2021-06-30T08:30:24Z
kaust.acknowledged.supportUnitCRG6
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)
dc.date.published-online2021-06-29
dc.date.published-print2021-10


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