- Karaelmas Fen ve Mühendislik Dergisi
- Vol: 13 Issue: 1
- Fracture Morphology of Single-Lap Dissimilar Joints Between Thermoplastic Composite and AA5754-H111 ...
Fracture Morphology of Single-Lap Dissimilar Joints Between Thermoplastic Composite and AA5754-H111 with Laser Ablation Surface Pre-Treatment
Authors : Nahit Öztoprak, Gökçe Mehmet Gençer
Pages : 12-21
Doi:10.7212/karaelmasfen.1144918
View : 50 | Download : 44
Publication Date : 2023-06-30
Article Type : Research Article
Abstract :Hot pressing is successfully proposed to bond metallic and polymeric materials as a direct-joining method to replace conventional assembly techniques. This article reports an experimental investigation on the failure mechanism analysis of single-lap joints (SLJs) subjected to tensile-shear loading. Al5754 alloy in H111 condition and long glass fiber reinforced-polypropylene (PP) composite are chosen as the adherends. In order to enhance the bond strength, laser processing is applied to the metal surface. A grid texture model by eight consecutive times scanning is utilized for the surface modification. After fabrication of the dissimilar joint, quasi-static mechanical performance of the metal-polymer hybrid structure is elucidated through tensile-shear testing. Thereafter, morphology of the fracture surfaces is evaluated by scanning electron microscopy (SEM). The experimental findings reveal that the laser surface texturing is proved to be an outstanding candidate for achieving strong joints through micro-interlocking in such metal/polymer multi-material connections. The ultimate force reaches the value of 1515.10 N after the 20 W laser surface pre-treatment.Keywords : Tek bindirmeli bağlantılar, Sıcak presleme, Lazer ile uzaklaştırma işlemesi, Kırılma yüzeyi