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Proceedings Paper

Thermal imaging for assessment of electron-beam freeform fabrication (EBF3) additive manufacturing deposits
Author(s): Joseph N. Zalameda; Eric R. Burke; Robert A. Hafley; Karen M. Taminger; Christopher S. Domack; Amy Brewer; Richard E. Martin
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Paper Abstract

Additive manufacturing is a rapidly growing field where 3-dimensional parts can be produced layer by layer. NASA’s electron beam freeform fabrication (EBF3) technology is being evaluated to manufacture metallic parts in a space environment. The benefits of EBF3 technology are weight savings to support space missions, rapid prototyping in a zero gravity environment, and improved vehicle readiness. The EBF3 system is composed of 3 main components: electron beam gun, multi-axis position system, and metallic wire feeder. The electron beam is used to melt the wire and the multi-axis positioning system is used to build the part layer by layer. To insure a quality deposit, a near infrared (NIR) camera is used to image the melt pool and solidification areas. This paper describes the calibration and application of a NIR camera for temperature measurement. In addition, image processing techniques are presented for deposit assessment metrics.

Paper Details

Date Published: 22 May 2013
PDF: 8 pages
Proc. SPIE 8705, Thermosense: Thermal Infrared Applications XXXV, 87050M (22 May 2013); doi: 10.1117/12.2018233
Show Author Affiliations
Joseph N. Zalameda, NASA Langley Research Ctr. (United States)
Eric R. Burke, NASA Langley Research Ctr. (United States)
Robert A. Hafley, NASA Langley Research Ctr. (United States)
Karen M. Taminger, NASA Langley Research Ctr. (United States)
Christopher S. Domack, NASA Langley Research Ctr. (United States)
Amy Brewer, NASA Langley Research Ctr. (United States)
Richard E. Martin, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 8705:
Thermosense: Thermal Infrared Applications XXXV
Gregory R. Stockton; Fred P. Colbert, Editor(s)

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