Effects of support patches on the mechanical characteristics of adhesively bonded aluminium alloy single lap joints

TAŞ H.

Journal of Adhesion, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/00218464.2025.2472710
  • Dergi Adı: Journal of Adhesion
  • 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: Single lap joint, adhesive joint, support patch, adhesive, mechanical testing, joint geometry
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

In the current work, the effect of support patches bonded to the lateral surfaces of the adherends in adhesively bonded single lap joints (SLJs) was investigated experimentally. Loctite EA 9466 epoxy was employed as the adhesive, while AA5754 aluminium alloy was utilized as both the adherend and the support patch. The impact of support patch length (0, 5, 15, and 25 mm), patch location (patches were located at the centre and at both ends of the side surfaces of adherends in the joint region), and number of support patches stacked on top of each other (0, 1, and 2) on the mechanical behaviour of the SLJ subjected to tensile loading was studied. According to the findings, bonding support patches increased the load-carrying and deformation capacity of the SLJs by 13.1% to 78.4% and 16.3% to 119.5%, depending on the patch length, location, and layer number. Additionally, support patch location and layer number are key parameters significantly influencing the mechanical properties of the SLJ, even when the bonding area remains unchanged. Increasing the patch layer number and placing the support patches at both ends of the lateral surfaces of adherends resulted in improved mechanical characteristics of the SLJ.