Strength Improvement of Adhesively-Bonded Joints Using a Reverse-Bent Geometry

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Campilho, RDSG (Autor) Outra; Pinto, AMG (Autor) Outra; Banea, MD (Autor) FEUP; Silva, RF (Autor) Outra; da Silva, LFM (Autor) FEUP

Revista

Título: Journal of Adhesion Science and Technology

Vol. 25

Páginas: 2351-2368

ISSN: 0169-4243

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 90 Citações

Scopus - 107 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-002-X3G

DOI: 10.1163/016942411x580081

Abstract (EN): Adhesive bonding of components has become more efficient in recent years due to the developments in adhesive technology, which has resulted in higher peel and shear strengths, and also in allowable ductility up to failure. As a result, fastening and riveting methods are being progressively replaced by adhesive bonding, allowing a big step towards stronger and lighter unions. However, single-lap bonded joints still generate substantial peel and shear stress concentrations at the overlap edges that can be harmful to the structure, especially when using brittle adhesives that do not allow plasticization in these regions. In this work, a numerical and experimental study is performed to evaluate the feasibility of bending the adherends at the ends of the overlap for the strength improvement of single-lap aluminium joints bonded with a brittle and a ductile adhesive. Different combinations of joint eccentricity were tested, including absence of eccentricity, allowing the optimization of the joint. A Finite Element stress and failure analysis in ABAQUS (R) was also carried out to provide a better understanding of the bent configuration. Results showed a major advantage of using the proposed modification for the brittle adhesive, but the joints with the ductile adhesive were not much affected by the bending technique. (C) Koninklijke Brill NV, Leiden, 2011

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18