Fracture surface evaluation of adhesively bonded dissimilar joints reinforced with nanoclay

Dizeci Ş., Khabaz-Aghdam A., Kandemir A. Ç.

Journal of Adhesion Science and Technology, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/01694243.2025.2467758
  • Dergi Adı: Journal of Adhesion Science and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: adhesion strength, dissimilar joint, Fracture surface, nanoclay, parametric analysis
  • TED Üniversitesi Adresli: Evet

Özet

This study investigates the morphology of fracture surfaces in adhesively bonded dissimilar single lap joints (DSLJs) with dissimilar adherends such as aluminum (Al), copper (CU), stainless steel (SS) and carbon fiber reinforced polymer (CFRP). examining the influence of incorporating nanoclay (NC) at different weight percentages. Tensile testing is conducted on DSLJs (Al-Cu, Al-SS, SS-Cu, and Al-CFRP) to determine the ultimate load. Fracture surface morphology on each adherend is analyzed introducing two surface area parameters. Adding 1.4 wt% NCs to the adhesive enhances epoxy strength by 11% and increases the ultimate load of DSLJs by 29–40%. Moreover, incorporating NCs increased the sensitivity of the adherend (Formula presented.), and decreased the total failure area parameter (Formula presented.)), leading to improved adhesion performance and joint strength. A parabolic function depicting the relationship between loading capacity and fracture surface parameters demonstrates a strong correlation. These findings provide valuable insights for DSLJs and can serve as a benchmark derived from fracture surface analysis.