Articles
Authors: Jonas Bally (Ghent University) , Wim De Waele (Ghent University) , Patricia Verleysen (Ghent University) , Nenad Gubeljak (Ghent University) , Stijn Hertelé (Ghent University)
Welding is a widely adopted industrial process used for joining components. A fusion weld has a highly heterogeneous microstructure and characterisation of strength heterogeneity is difficult because of the potentially large variations over a limited distance. Hardness mapping and miniature tensile tests are two distinct approaches to this problem. This paper reports on the possibilities and limitations of both techniques. Hardness mapping is a well-documented procedure as opposed to miniature tensile testing, where the dimensions of the dogbone shaped specimens are smaller than what standards prescribe. A particular challenge is the measurement of strains in such small specimens. The authors have achieved this measurement by means of Digital Image Correlation (DIC). To that end, a sufficiently fine speckling method has been developed.
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How to Cite: Bally, J. , De Waele, W. , Verleysen, P. , Gubeljak, N. & Hertelé, S. (2015) “Characterisation of weld heterogeneity through hardness mapping and miniature tensile testing”, International Journal of Sustainable Construction and Design. 6(3). doi: https://doi.org/10.21825/scad.v6i3.1127