Mechanical and X ray computed tomography characterisation of a WAAM 3D printed steel plate for structural engineering applications

Z. Al-Nabulsi, J.T. Mottram*, M. Gillie, N. Kourra, M.A. Williams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

This paper reports an investigation to improve fundamental knowledge and understanding of 3D printing of steel in structural engineering. The process method examined is Wire and Arc Additive Manufacturing (WAAM) for the manufacturing of large-sized components. The mechanical properties of 3D printed Union K 40 - GMAW steel are determined and benchmarked against measured properties of EN 8 carbon medium steel. The results presented and discussed are from tensile coupon testing and X-ray Computed Tomography, with the latter inspecting an internal volume of the WAAM steel for: printing orientation; mapping porosity; interfacial variation between the printed layers. The key finding is that the mechanical properties of the WAAM steel satisfy the requirements for a structural steel grade for building structures as specified by Eurocode 3 (EN 1993–1-1).
Original languageEnglish
Article number121700
Number of pages13
JournalConstruction and Building Materials
Volume274
Early online date9 Dec 2020
DOIs
Publication statusPublished - 8 Mar 2021

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