Residual Stress Induced in Thin Plates During Additive Manufacturing

被引:0
作者
Patterson, Eann A. [1 ]
Lambros, John [2 ]
Magana-Carranza, Rodrigo [1 ]
Sutcliffe, Christopher J. [3 ]
机构
[1] Univ Liverpool, Dept Mech Mat & Aerosp Engn, Liverpool, England
[2] Univ Illinois, Dept Aerosp Engn, Champaign, IL USA
[3] Meta Consulting LDA, Foz Do Arelho, Portugal
来源
ADDITIVE AND ADVANCED MANUFACTURING, INVERSE PROBLEM METHODOLOGIES AND MACHINE LEARNING AND DATA SCIENCE, VOL 4, 2023 | 2024年
基金
英国工程与自然科学研究理事会;
关键词
Residual stress; L-PBF; Digital image correlation; Additive manufacturing; Thin plates;
D O I
10.1007/978-3-031-50474-7_3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Additive manufacturing is a technique for producing complex geometry engineering parts relatively quickly and cheaply; however, residual stresses induced in the part during manufacture can result in significant distortion of the build. In this study, nickel-chromium alloy (Inconel 625) geometrically-reinforced thin plates have been additively manufactured using laser-powder bed fusion, that have comparable flatness to those built subtractively. The residual stresses induced in the thin plates from manufacture are deduced by measuring out-of-plane displacements using stereoscopic digital image correlation. The results demonstrate that residual stresses cause potentially severe out-of-plane displacements which can be alleviated by using buttress supports to reinforce the plate edges during the build. In both landscape and portrait orientation builds, out-ofplane displacement increased upon release from the baseplate but was reduced by incremental release.
引用
收藏
页码:13 / 16
页数:4
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