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

Al-Nabulsi, Z., Mottram, J.T., Gillie, Martin, Kourra, N. and Williams, M.A. (2020) Mechanical and X ray computed tomography characterisation of a WAAM 3D printed steel plate for structural engineering applications. Construction and Building Materials. p. 121700. ISSN 0950-0618 (In Press)

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Official URL: https://doi.org/10.1016/j.conbuildmat.2020.121700

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).

Item Type: Article
Uncontrolled Keywords: Metal 3D printing, WAAM process, Mechanical properties, X-ray computed tomography, Tensile testing, Structural application
Subjects: H200 Civil Engineering
H300 Mechanical Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 15 Dec 2020 09:34
Last Modified: 15 Dec 2020 09:45
URI: http://nrl.northumbria.ac.uk/id/eprint/44981

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