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

被引:38
作者
Al-Nabulsi, Z. [1 ]
Mottram, J. T. [1 ]
Gillie, M. [2 ]
Kourra, N. [3 ]
Williams, M. A. [3 ]
机构
[1] Univ Warwick, Sch Engn, Coventry, W Midlands, England
[2] Northumbria Univ, Newcastle Upon Tyne, Tyne & Wear, England
[3] Univ Warwick, Warwick Mfg Grp, Coventry, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
Metal 3D printing; WAAM process; Mechanical properties; X-ray computed tomography; Tensile testing; Structural application;
D O I
10.1016/j.conbuildmat.2020.121700
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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). (C) 2020 The Authors. Published by Elsevier Ltd.
引用
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页数:13
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