Multi-view fringe projection system for surface topography measurement during metal powder bed fusion
Multi-view fringe projection system for surface topography measurement during metal powder bed fusion
复制标题
多视角条纹投影法测量金属粉末熔床表面形貌
DOI：
10.1364/josaa.396186
复制
发表时间：
2020-09-01
影响因子：
1.9
通讯作者：
Leach, Richard
中科院分区：
文献类型：
--
作者：
Dickins, Andrew;Widjanarko, Taufiq;Leach, Richard
金属粉末床熔融（PBF）方法需要过程中测量方法来增加用户的信心，并鼓励在高价值制造领域进一步采用。本文提出了一种新的PBF系统的测量方法，使用多视图条纹投影，以获得高分辨率的粉末床的表面形貌信息。使用商业PBF系统的模型进行测量，以评估该系统的准确性和精度相比，传统的单视图条纹投影技术用于相同的应用。结果表明，多视图系统比单视图条纹投影逐点测量精度高，但精度差。多视图系统还通过使用交替视图来访问不由单个相机测量的区域来实现高度的表面覆盖。由The Optical Society根据知识共享署名4.0许可证条款发布。
Metal powder bed fusion (PBF) methods need in-process measurement methods to increase user confidence and encourage further adoption in high-value manufacturing sectors. In this paper, a novel measurement method for PBF systems is proposed that uses multi-view fringe projection to acquire high-resolution surface topography information of the powder bed. Measurements were made using a mock-up of a commercial PBF system to assess the system's accuracy and precision in comparison to conventional single-view fringe projection techniques for the same application. Results showthat the multi-view system is more accurate, but less precise, than single-view fringe projection on a point-by-point basis. The multi-view system also achieves a high degree of surface coverage by using alternate views to access areas not measured by a single camera. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.