Comparison of mechanical performance between friction-stir spot welded and adhesive bonded joints

Paulo NB Reis; Ana Amaro; Altino Loureiro

doi:10.3221/IGF-ESIS.53.10

Comparison of mechanical performance between friction-stir spot welded and adhesive bonded joints

Authors

Paulo NB Reis C-MAST, Dep. of Electromechanical Engineering, University of Beira Interior, Covilhã, Portugal
Ana Amaro University of Coimbra, CEMMPRE, Dep. of Mechanical Engineering, Portugal
Altino Loureiro University of Coimbra, CEMMPRE, Dep. of Mechanical Engineering, Portugal

DOI:

https://doi.org/10.3221/IGF-ESIS.53.10

Keywords:

Adhesive bonding, Friction-stir welding, Aluminium adherends

Abstract

The main objective of this study is to compare the mechanical strength of friction stir spot welded (FSSW) joints and adhesive bonded single lap ones. The present study aims to compare the morphology and strength of welded and adhesive bonded joints. The welded joints were done by friction stir spot welding and the adhesive bonded ones by the use of the adhesive Araldite 420 A/B. The produced joints were subjected to morphology and microstructure analyzes, microhardness tests, tensile-shear tests and local strain analyzes. The welded joints have higher strength than adhesive-bonded joints. However, this difference is insignificant, around 5%, which is covered by the standard deviation. The connection by FSSW proves to be an alternative to adhesive bonded joints, offering the same strength, but with the connection at isolated points, inducing local stress concentration.

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Published

19-07-2020

Issue

Vol. 14 No. 53 (2020): July 2020

Section

Advanced Manufacturing and Processing

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Comparison of mechanical performance between friction-stir spot welded and adhesive bonded joints. (2020). Frattura Ed Integrità Strutturale, 14(53), 124-133. https://doi.org/10.3221/IGF-ESIS.53.10