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

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Campilho, RDSG (Author) Other; Pinto, AMG (Author) Other; Banea, MD (Author) FEUP; Silva, RF (Author) Other; da Silva, LFM (Author) FEUP

Journal

Title: Journal of Adhesion Science and Technology

Vol. 25

Pages: 2351-2368

ISSN: 0169-4243

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 49 Citations

Scopus - 85 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: 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

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18