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dc.contributor.authorHashem, Mjed H.
dc.contributor.authorWagih, A
dc.contributor.authorLubineau, Gilles
dc.date.accessioned2022-04-17T08:45:30Z
dc.date.available2022-04-17T08:45:30Z
dc.date.issued2022-04-14
dc.identifier.citationHashem, M., Wagih, A., & Lubineau, G. (2022). Laser-based pretreatment of composite T-joints for improved pull-off strength and toughness. Composite Structures, 115545. https://doi.org/10.1016/j.compstruct.2022.115545
dc.identifier.issn0263-8223
dc.identifier.doi10.1016/j.compstruct.2022.115545
dc.identifier.urihttp://hdl.handle.net/10754/676276
dc.description.abstractThis study demonstrates the efficiency of two CO surface laser treatment strategies for improving the strength and toughness of the adhesive bonding of T-joints. The first strategy involves uniform laser treatment to the surface, and the second strategy involves laser patterning by alternatively applying high- and low-power laser irradiation to the T-joint stiffener and skin surfaces. All the laser-treated T-joints showed progressive failure modes during pull-off test, unlike the PP surface-treated joints that exhibited brittle failure. The uniform laser-treated joints exhibited improved strength and toughness because contaminants were removed and the fibers were exposed to be directly bonded with adhesive. The joints subjected to the laser-patterning strategy demonstrated a substantial improvement in terms of the strength and toughness, reaching values of 2.2 and 12 times those of the PP surface-treated T-joints, respectively. This is because of the crack arresting at the transition between the two treatments at the stiffener interface, inducing crack migration from the stiffener-adhesive interface to the skin-adhesive interface while forming adhesive ligaments. The formation, deformation, and breakage of these ligaments dissipated more energy, hence increasing the effective joint toughness and strength.
dc.description.sponsorshipFunded by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award number OSR-2017-CRG6-3388.01
dc.description.sponsorshipWe thank Dr. Ran Tao for helping in the samples treatment
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0263822322003348
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Composite Structures. 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 Composite Structures, [, , (2022-04-14)] DOI: 10.1016/j.compstruct.2022.115545 . © 2022. 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.subjectComposites
dc.subjectT-joints
dc.subjectAdhesive joints
dc.subjectPulsed laser irradiation
dc.subjectPull-off strength
dc.titleLaser-based pretreatment of composite T-joints for improved pull-off strength and toughness
dc.typeArticle
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Mechanics of Composites for Energy and Mobility Lab., Thuwal 23955-6900, Saudi Arabia
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalComposite Structures
dc.rights.embargodate2024-04-14
dc.eprint.versionPost-print
dc.identifier.pages115545
kaust.personHashem, M
kaust.personWagih, A
kaust.personLubineau, Gilles
kaust.grant.numberOSR-2017-CRG6-3388.01
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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