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A review of geometric sensitivities in laser metal 3D printing
Virtual and Physical Prototyping ( IF 10.6 ) Pub Date : 2020-02-25 , DOI: 10.1080/17452759.2019.1709255
Vedant Chahal 1 , Robert M. Taylor 1
Affiliation  

This paper examines the relationships in laser metal additive manufacturing between part geometry and as-built part quality, including residual stresses, deformations, process induced porosity, surface roughness, and microstructural variations. A comprehensive review of these defects and their relationships with the geometric features are provided along with a brief discussion of the involved physical phenomena. Specific design guidelines are also provided to facilitate a more robust design for structural applications. This review further highlights the need to pursue the development of design methodologies, including automated topology, shape, and sizing optimisation methods, that help derives an optimal design tailored for these process-induced quality considerations in laser metal additive manufacturing that affect structural performance.



中文翻译:

激光金属3D打印中的几何敏感性综述

本文研究了激光金属增材制造过程中零件几何形状与竣工零件质量之间的关系,包括残余应力,变形,工艺引起的孔隙率,表面粗糙度和微观结构变化。对这些缺陷及其与几何特征的关系进行了全面的回顾,并简要讨论了所涉及的物理现象。还提供了特定的设计准则,以促进对结构应用程序进行更可靠的设计。这篇评论进一步强调了对开发设计方法的需求,包括自动拓扑,形状和尺寸优化方法,这些方法有助于获得针对影响结构性能的激光金属增材制造中这些过程引起的质量考虑量身定制的最佳设计。

更新日期:2020-04-20
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