An investigation on the strength of single lap adhesive joints with a wide range of materials and dimensions using a critical distance approach

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Akhavan Safar, A (Autor) Outra; da Silva, LFM (Autor) FEUP; Ayatollahi, MR (Autor) Outra

Revista

Título: International Journal of Adhesion and Adhesives

Vol. 78

Páginas: 248-255

ISSN: 0143-7496

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 15 Citações

Outras Informações

ID Authenticus: P-00M-ZYG

DOI: 10.1016/j.ijadhadh.2017.08.009

Abstract (EN): Several criteria have been proposed for failure load prediction of adhesively bonded single lap joints (SLJs). However, the presence of factors such as the bimaterial interface, the ductility or brittleness of adhesives and also the singularity at the bonding ends make the failure prediction of SLJs a challenging issue. Recently a distance based failure load prediction method named CLS (critical longitudinal strain) was applied successfully on SLJs with different bonding lengths. This method uses a specific distance and the critical longitudinal strain as failure parameters. In this paper, the CLS was used on a variety of SLJs with a wide range of materials and geometries. Five types of adhesives including epoxies, silicones, bismaleimides, polyurethanes and acrylic were considered and the substrates consisted of different steels and aluminum alloys. The results show that the CLS can predict the failure load of SLJs with different adhesives including ductile and also brittle adhesives very well. Also, there is a good correlation between the predictions and the experimental data for SLJs with different dimensions. It was also found that the critical longitudinal strain is a function of the substrate thickness and also the Young's modulli of the substrate and adhesive. A relation was proposed for the prediction of the critical longitudinal strain in SLJs with different configurations.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8