INFLUENCE OF LARGE ARTIFICIAL POROSITY ON BENDING BEHAVIOUR OF TI6AL4V ELI ADDITIVELY MANUFACTURED SPECIMENS SUBJECTED TO TYPICAL LOADS DURING MASTICATION

IF 0.5 4区工程技术 Q4 ENGINEERING, INDUSTRIAL

South African Journal of Industrial Engineering Pub Date : 2020-11-11 DOI:10.7166/31-3-2449

A. Wessels, A. Plessis, I. Yadroitsava, J. Els, I. Yadroitsev

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引用次数: 0

Abstract

Effective quality control of implants made using additive manufacturing is an important task for suppliers to comply fully with existing regulations and certifications. To study the influence of porosity on the mechanical behaviour of mandibular implants produced by additive manufacturing, preliminary tests with longitudinal flat samples were performed with 3D point bending tests. Ti6Al4V Extra Low Interstitial (ELI) specimens with artificial porosity were designed and subjected to typical loads during mastication. In this work, a finite element simulation was constructed to investigate the bending behaviour of samples, which was consistent with the experimental results. The work shows that even large artificial cavities (designed up to 0.42 mm) do not significantly affect the strength of additively manufactured 2.5 mm-thick Ti6Al4V ELI specimens under typical static loads of mandibular implants, in the considered loading conditions, and for samples subjected to appropriate surface finishing and annealing heat treatment.

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大的人工孔隙率对TI6AL4V-ELI添加试样在典型载荷作用下胶合弯曲性能的影响

对使用增材制造的植入物进行有效的质量控制是供应商完全遵守现有法规和认证的重要任务。为了研究孔隙率对增材制造下颌种植体力学性能的影响，采用三维点弯曲试验对纵向扁平样品进行了初步试验。设计了具有人工孔隙率的Ti6Al4V超低间隙（ELI）试样，并在咀嚼过程中承受典型载荷。在这项工作中，建立了有限元模拟来研究样品的弯曲行为，这与实验结果一致。研究表明，即使是大的人工空腔（设计高达0.42 mm），在下颌植入物的典型静态载荷下，在所考虑的载荷条件下，以及对于经过适当表面精加工和退火热处理的样品，也不会显著影响额外制造的2.5 mm厚Ti6Al4V ELI样品的强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

South African Journal of Industrial Engineering 工程技术-工程：工业

CiteScore

1.10

自引率

20.00%

发文量

审稿时长

6 weeks

期刊介绍： The South African Journal of Industrial Engineering (SAJIE) publishes articles with the emphasis on research, development and application within the fields of Industrial Engineering and Engineering and Technology Management. In this way, it aims to contribute to the further development of these fields of study and to serve as a vehicle for the effective interchange of knowledge, ideas and experience between the research and training oriented institutions and the application oriented industry. Articles on practical applications, original research and meaningful new developments as well as state of the art surveys are encouraged.