Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Effect of atmospheric plasma treatment on Mode-I and Mode-II fracture toughness properties of adhesively bonded carbon fiber/PEKK composite joints
Engineering Fracture Mechanics · Eylül 2023
YÖKSİS Kayıtları
Effect of atmospheric plasma treatment on Mode-I and Mode-II fracture toughness properties of adhesively bonded carbon fiber/PEKK composite joints
Engineering Fracture Mechanics · 2023 SCI-Expanded
DOÇENT HASAN ULUS →
Makale Bilgileri
DergiEngineering Fracture Mechanics
Yayın TarihiEylül 2023
Cilt / Sayfa289
Scopus ID2-s2.0-85164220244
Erişim🔓 Açık Erişim
Özet
This 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.
Yazarlar (6)
1
Ceren Yildirim
2
Hasan Ulus
ORCID: 0000-0001-8591-8993
3
Bertan Beylergil
ORCID: 0000-0002-3204-6746
4
Abdulrahman Al-Nadhari
ORCID: 0000-0003-0461-6905
5
Serra Topal
ORCID: 0000-0002-0726-2420
6
Mehmet Yildiz
ORCID: 0000-0003-1626-5858
Anahtar Kelimeler
Acoustic emission
Adhesively bonded joints
Atmospheric plasma
CF/PEKK
Fracture toughness
Kurumlar
Alanya Alaaddin Keykubat University
Alanya Turkey
Center for Composite Materials
Newark United States
Sabancı Üniversitesi
Tuzla Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
13
Atıf
6
Yazar
5
Anahtar Kelime