Manufacturing Metrology Team

Photonics Europe 2022 - Optics and Photonics for Advanced Dimensional Metrology

 
20220412Samuel

Photonics Europe 2022

Dr Mingyu Liu (Samuel) attended the Photonics Europe 2022 - Optics and Photonics for Advanced Dimensional Metrology II conference in Strasbourg, France from 5 to 7 April and gave a presentation entitled Measurement of laser-based powder bed fusion surfaces using light scattering and one-class support vector machines. Dr Liu also chaired a session at the conference: Quantitative Imaging for 3D Metrology.

Works Presented

Measurement of laser-based powder bed fusion (PBF-LB) surfaces provides a promising solution for closed-loop quality control of the final parts. This paper presents a light scattering method to measure PBF-LB surfaces combined with one-class support vector machines (SVMs) for anomaly (defect) detection during the manufacturing process. With the one-class SVM method, datasets from solely reference (acceptable) surfaces are used to fit a classification model. Experimental results show that the method is fast and has higher accuracy than our previous work, which is promising for integration into next-generation PBF-LB machines for process quality monitoring.
 
Posted on Tuesday 12th April 2022

Manufacturing Metrology Team

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