Mechanical and X ray computed tomography characterisation of a WAAM 3D printed steel plate for structural engineering applications
Mechanical and X ray computed tomography characterisation of a WAAM 3D printed steel plate for structural engineering applications
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DOI：
10.1016/j.conbuildmat.2020.121700
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发表时间：
2021-01-29
影响因子：
7.4
通讯作者：
Williams, M. A.
中科院分区：
文献类型：
--
作者：
Al-Nabulsi, Z.;Mottram, J. T.;Williams, M. A.
本文报告了一项调查，以提高结构工程中钢材3D打印的基础知识和理解。所研究的工艺方法是用于制造大型部件的线弧增材制造（WAAM）。3D打印的Union K 40 - GMAW钢的机械性能被确定并与EN 8碳中碳钢的测量性能进行基准测试。所提出和讨论的结果是从拉伸试样测试和X射线计算机断层扫描，与后者检查WAAM钢的内部体积：印刷方向;映射孔隙度;印刷层之间的界面变化。关键的发现是WAAM钢的机械性能满足欧洲规范3（EN 1993-1-1）规定的建筑结构用结构钢等级的要求。(C)2020年，任作家。出版社：Elsevier Ltd
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.