Effect of atmospheric plasma treatment on Mode-I and Mode-II fracture toughness properties of adhesively bonded carbon fiber/PEKK composite joints

Basit Öğe Kaydı
dc.authorid0000-0002-0726-2420
dc.authorid0000-0003-1626-5858
dc.authorid0000-0003-0259-2655
dc.authorid0000-0002-3204-6746
dc.authorid0000-0001-8591-8993
dc.contributor.authorYildirim, Ceren
dc.contributor.authorUlus, Hasan
dc.contributor.authorBeylergil, Bertan
dc.contributor.authorAl-Nadhari, Abdulrahman
dc.contributor.authorTopal, Serra
dc.contributor.authorYildiz, Mehmet
dc.date.accessioned2026-01-24T12:31:09Z
dc.date.available2026-01-24T12:31:09Z
dc.date.issued2023
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractThis study aims to assess the influence of peel-ply (PP), mechanical abrasion (MA), and atmospheric plasma activation (APA) treatments on Mode-I and Mode-II fracture toughness of carbon fiber/ poly-ether-ketone-ketone (CF/PEKK) composite joints. A comprehensive examination of the topography and wettability of the adherend surfaces is conducted using various methods. The CF/PEKK adherends are produced through an automated fiber placement (AFP) process, and the CF/PEKK bonded joints are prepared using two different structural adhesive films, one of which has a lower strength, while the other has a higher strength. To evaluate their fracture toughness properties, double cantilever beam (DCB) and end-notched flexure (ENF) tests are carried out in accordance with ASTM standards. Acoustic emission sensors are used to monitor the test specimens during DCB tests, allowing for an in-depth evaluation of the failure modes and damage propagations in the joints. The results show that the GIC and GIIC values of the APA-treated CF/ PEKK bonded joints are remarkably higher than those of the untreated ones, with a range of improvement of 34.0-84.8 times and 7.5-17.4 times, respectively. Adhesive failure is the dominant failure mode on the surfaces of non-treated (NT) and PP samples, while cohesive failure is more prominent in those treated with MA and APA. The failure modes of the treated samples varied depending on the adhesive used, with APA-treated samples always exhibiting a cohesive failure. It is observed that the AE counts increase more slowly in APA-treated samples compared to MA-treated joints as delamination progresses more slowly with cohesive failure dominant, which leads to a lower release of AE energy.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUEBITAK) [218M709]
dc.description.sponsorshipThe authors gratefully acknowledge financial support from the Scientific and Technological Research Council of Turkey (TUEBITAK) with project number 218M709. The authors would like to thank Hatice S. Sas (Sabanci University) for her assistance in CF/PEKK composite manufacturing.
dc.identifier.doi10.1016/j.engfracmech.2023.109463
dc.identifier.issn0013-7944
dc.identifier.issn1873-7315
dc.identifier.scopus2-s2.0-85164220244
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.engfracmech.2023.109463
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5684
dc.identifier.volume289
dc.identifier.wosWOS:001039765700001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofEngineering Fracture Mechanics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectAtmospheric plasma
dc.subjectCF
dc.subjectPEKK
dc.subjectAdhesively bonded joints
dc.subjectFracture toughness
dc.subjectAcoustic emission
dc.titleEffect of atmospheric plasma treatment on Mode-I and Mode-II fracture toughness properties of adhesively bonded carbon fiber/PEKK composite joints
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu