Rapid determination of the S-N curve of Wire + Arc additively manufactured steel by infrared thermography
Year: 2025
Type: article
Abstract: Wire + Arc Additive Manufacturing (WAAM) enables additive manufacturing of metals using electric arc welding. For widespread adoption, mechanical properties like fatigue performance must be characterised and benchmarked against conventionally manufactured materials. This research presents S-N curves from rotating bending fatigue tests on specimens produced from T50 6 1Ni M M21 1 H5 steel feedstock wire. No significant anisotropy was found between deposition and build directions, and fatigue performance exceeded reference curves from standards. Additionally, a rapid method for determining S-N curves using a specimen's surface temperature during stepped amplitude testing is proposed. While more data is needed for robust analysis, the mean S-N curves show good agreement with conventionally determined curves.
Source: Materials Science and Technology
Authors: Robin Motte, Victor Rappe, Rafael Nunes, Wim Verlinde, Wim De Waele
Institutions: Ghent University, Belgian Welding Institute
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Award: G5453597061
OpenAlex ID: W4415545903