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Published in:
2022 | OriginalPaper | Chapter
Automated Visual Inspection of Near Nozzle Droplet Formation for Quality Control of Additive Manufacturing
Authors : Derk Bos, Rob Wolfs
Published in: Third RILEM International Conference on Concrete and Digital Fabrication
Publisher: Springer International Publishing
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Abstract
The formation of droplets near the nozzle exit gives information about the production process and extruded material properties, which can be used for quality control, and process and material optimization. Mass and length of these droplets, or “slugs”, have been measured in previous studies [1, 2]. In this study, the experiment is expanded by including a fully automated visual inspection procedure to calculate the volume of the droplets for all axisymmetric geometry. The method extends the application domain of the experiment since the material can be analyzed when the droplet frequency is high or even without the formation of separate droplets. By measuring the droplet mass in parallel to the volume estimation, the density of the material can be determined when an infrequent slug-by-slug flow exists.