Temperature-dependent optical material properties of polymer powders regarding in-situ measurement techniques in additive manufacturing

Heinl M, Laumer T, Bayer F, Hausotte T (2018)


Publication Language: English

Publication Type: Journal article, other

Publication year: 2018

Journal

Book Volume: Polymer Testing

Pages Range: 378-383

Journal Issue: 71

DOI: 10.1016/j.polymertesting.2018.09.016

Abstract

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.

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APA:

Heinl, M., Laumer, T., Bayer, F., & Hausotte, T. (2018). Temperature-dependent optical material properties of polymer powders regarding in-situ measurement techniques in additive manufacturing. Polymer Testing, Polymer Testing(71), 378-383. https://dx.doi.org/10.1016/j.polymertesting.2018.09.016

MLA:

Heinl, Martin, et al. "Temperature-dependent optical material properties of polymer powders regarding in-situ measurement techniques in additive manufacturing." Polymer Testing Polymer Testing.71 (2018): 378-383.

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