3D打印复杂点阵结构的缺陷三维可视化方法

doi:10.3969/j.issn.1000-1158.2020.09.07

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摘要针对3D打印的复杂点阵结构容易出现裂纹、未熔合或孔洞等缺陷,严重影响结构件的功能性能问题,开展了对3D打印的一种复杂点阵结构件的缺陷三维可视化检测方法研究。基于CT图像中结构件内部缺陷的灰度值差异特征,采用集合灰度值法自动识别一类缺陷并分割提取,由光线投射法对分割得到的缺陷序列图像进行三维重构。实验结果表明:所提方法有效获得了点阵结构件内部一种典型缺陷的三维可视图,从三维角度可对缺陷的形状、大小等形貌细节信息进行描述,为进一步分析缺陷对结构性能的影响提供了有力的依据。

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	温银堂
	高亭亭
	张玉燕

关键词 ：计量学;3D打印;点阵结构;三维可视化;集合灰度值法, 缺陷检测

Abstract：Due to the complex lattice structure of 3D printing is prone to defects such as cracks, unfused or holes, and its seriously affect the functional performance of structural parts, a 3D visual inspection method for 3D printed defects in a complex lattice structure was studied. Based on gray value difference feature of internal defect in CT images of lattice structure, a class of defects were automatic identified and segmented by using the collective gray value method, and the segmented defect image sequence was 3D reconstructed by using ray-casting method. The experiment results showed that the method proposed can effectively obtained a three-dimensional view of a typical defect inside the lattice structure, and from which the shape and size of defect can be described. A strong basis for further analysis of the impact of defects on structural performance is provided.

Key words： metrology 3D printing lattice structure three-dimensional visualization set gray value method;defect detection

收稿日期: 2019-09-20 发布日期: 2020-08-28

PACS:

TB96

基金资助:河北省自然科学基金(E2017203240)

作者简介: 温银堂(1978-),男,河北唐县人,燕山大学研究员,从事智能传感、结构无损检测及健康监测技术方向的研究。Email: ytwen@ysu.edu.cn

引用本文:

温银堂,高亭亭,张玉燕. 3D打印复杂点阵结构的缺陷三维可视化方法[J]. 计量学报, 2020, 41(9): 1077-1081.
WEN Yin-tang,GAO Ting-ting,ZHANG Yu-yan. 3D Visualization Method for Complex Lattice Structure Defects in 3D Printing. Acta Metrologica Sinica, 2020, 41(9): 1077-1081.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2020.09.07 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2020/V41/I9/1077

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