Inspecting manufacturing precision of 3D printed concrete parts based on geometric dimensioning and tolerancing
Inspecting manufacturing precision of 3D printed concrete parts based on geometric dimensioning and tolerancing
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DOI：
10.1016/j.autcon.2020.103233
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发表时间：
2020-09
影响因子：
10.3
通讯作者：
Jie Xu;R. Buswell;P. Kinnell;I. Bíró;J. Hodgson;Nikolaos Konstantinidis;L. Ding
中科院分区：
文献类型：
--
作者：
Jie Xu;R. Buswell;P. Kinnell;I. Bíró;J. Hodgson;Nikolaos Konstantinidis;L. Ding
使用3D混凝土打印（3DCP）等基于挤压技术的零件增材制造提供了传统成型工艺的替代方案。然而，所需形状的精度受到挤压工艺和层厚的限制，在制造过程中湿材料中的变形加剧了这一点。量化制造精度是定义过程能力和质量控制程序的关键部分，但这还有待于这些技术的探索。针对这一问题，本文提出了加工零件几何精度的评定问题，并提出了一种制造中常用的基于几何尺寸公差的方法。然后将其应用于案例研究中，以演示该技术在理解和定义过程能力方面的应用，以启用更有效的设计规则，从而对零件设计的可行性产生更大的信心，并为过程改进和控制提供必要的可靠性能度量。研究结果表明，该技术的前景是积极的，其应用将有利于未来3DCP质量控制程序的发展。
The additive manufacture of parts using extrusion-based techniques such as 3D Concrete Printing (3DCP) offers an alternative to traditional moulding processes. The precision to which the desired shape can be produced, however, is limited by the extrusion process and layer thickness, exacerbated by the deformation that occurs in the wet material during manufacture. Quantifying manufacturing precision is a critical part of defining process capability and quality control procedures, but this has yet to be explored for these technologies. To address this, this paper presents the problem of evaluating the geometrical precision of manufactured parts and then proposes an approach based on geometric dimensioning and tolerancing (GD&T), commonly used in manufacturing. This is then applied in a case study in order to demonstrate the application of the technique for understanding and defining process capability, to enable more effective design rules that lead to greater confidence in the viability of part designs, and to provide the reliable performance metrics necessary for process improvement and control. The work concludes that the outlook for such techniques is positive and that the application will be beneficial in the future development of quality control procedures for 3DCP.