Temperature-dependent optical material properties of polymer powders regarding in-situ measurement techniques in additive manufacturing
- Due to the growing number of applications for Additive Manufacturing (AM), an increasing need for enhanced quality control methods exists. Here optical measurement techniques are often used for in-situ monitoring in AM. There is a great potential to standardize and improve applications of optical measurement devices in accordance to the increasing requirements of measuring tasks. Beside the optical material qualifications, especially process-oriented changes in optical effects are of great relevance for in-situ evaluations. The optical modifications may be attributed to aggregate specific phase transitions coming along with variable emitted wavelengths. A measuring setup with two integrations spheres and a heated process chamber have been developed to analyze the optical interactions of laser radiation and visual illumination with the powder. The process oriented analysis for selective laser sintering lead to improved operating conditions in the field of in-situ measurements in combination with an accurate evaluation of the absorption ratio of the examined powder.
Author: | M. Heinl, Tobias LaumerORCiDGND, F. Bayer, Tino HausotteORCiDGND |
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DOI: | https://doi.org/10.1016/j.polymertesting.2018.09.016 |
Parent Title (English): | Polymer Testing |
Publisher: | Elsevier |
Document Type: | Article |
Language: | English |
Year of first Publication: | 2018 |
Release Date: | 2022/06/07 |
Volume: | 71 |
Issue: | October |
First Page: | 378 |
Last Page: | 383 |
Institutes: | Fakultät Maschinenbau |
Technologie-Campus Parsberg-Lupburg | |
Fakultät Maschinenbau / Labor Additive and Intelligent Manufacturing for Sustainability (AIMS) | |
Begutachtungsstatus: | peer-reviewed |
Publication: | Externe Publikationen |
research focus: | Produktion und Systeme |
Licence (German): | Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG |