Mechanical Characterization of 2219 Aluminum Alloy Welded Joints Under Bi-Axial Loading

Abstract

The mechanical performances of welded joints under bi-axial loading are significant to the reliability of various engineering structures. However, the protocol for the mechanical characterization of welded joints still needs to be improved to represent the mechanical performances of welded joints under complex loading conditions. In this work, an experimental design is proposed for the mechanical characterization of 2219 aluminum alloy welded joints. The target is to investigate the effects of combined tensile-shear load on the mechanical responses and failure behavior of 2219 aluminum alloy welded joints. The tensile-shear characterization was then conducted using a newly developed U-notch aluminum alloy welded joints specimen. In addition, standard tensile test and standard shear test were conducted to validate of the U-notch specimen design. This newly proposed experimental protocol is suitable to obtain mechanical properties of 2219 aluminum alloy welded joints subjected to tensile-shear load.