Journal
POLYMER TESTING
Volume 71, Issue -, Pages 378-383Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2018.09.016
Keywords
Additive manufacturing; Selective laser sintering; In-situ measurement; Process-oriented optical material qualification; Integration spheres
Funding
- German Research Foundation [CRC 814]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available