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On the Requirements for Model-Based Thermal Control of Melt Pool Geometry in Laser Powder Bed Fusion Additive Manufacturing

Published

Author(s)

Jason Fox, Felipe F. Lopez, Brandon Lane, Ho Yeung, Steven Grantham

Abstract

As additive manufacturing processes mature, process control is increasingly sought after as a means for improved quality. Accurate and responsive control of melt pool geometry in laser powder bed fusion processes is expected to improve the final part microstructure, prevent over- and under- melting defects, improve surface finish and mechanical properties, and reduce residual stress. Various approaches for process control of melt pool geometry have been proposed but there are still significant barriers for their adoption. In this paper, we look into the elements of such process controllers and identify their requirements in terms of range of operation and bandwidth; and discuss the feasibility of such control systems.
Proceedings Title
Proceedings of the 2016 Material Science & Technology Conference
Conference Dates
October 23-27, 2016
Conference Location
Salt Lake City, UT, US
Conference Title
Material Science & Technology 2016

Keywords

Powder Bed Fusion, Control, Melt Pool, additive manufacturing

Citation

Fox, J. , Lopez, F. , Lane, B. , Yeung, H. and Grantham, S. (2016), On the Requirements for Model-Based Thermal Control of Melt Pool Geometry in Laser Powder Bed Fusion Additive Manufacturing, Proceedings of the 2016 Material Science & Technology Conference, Salt Lake City, UT, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921166 (Accessed July 14, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 26, 2016, Updated April 18, 2022