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Title: The development of an augmented machine learning approach for the additive manufacturing of thermoelectric materials

Journal Article · · Journal of Manufacturing Processes
ORCiD logo [1];  [2];  [2];  [2];  [3];  [3];  [4]; ORCiD logo [5]
  1. University of Virginia, Charlottesville, VA (United States); University of Virginia
  2. University of Virginia, Charlottesville, VA (United States)
  3. George Washington University, Washington D.C. (United States)
  4. National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States); University of Maryland, College Park, MD (United States)
  5. National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States)

Through the integration of machine learning (ML) techniques alongside additive manufacturing (AM) experimentation, we demonstrate an iterative process to rapidly predict laser-material interactions and melt pool geometries throughout the build parameter space for a bismuth telluride thermoelectric (TE) material. In doing so, we determined process parameters that created crack-free, highly dense (>99 %) n-type bismuth telluride (Bi2Te2.7Se0.3) parts through laser powder bed fusion (LPBF). Furthermore, the ML-assisted understanding of the processing space allowed for the identification of build parameters that successfully yielded geometrically enhanced Bi2Te2.7Se0.3 parts with reduced build times and no increase in experimental effort.

Research Organization:
University of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
EE0009100
OSTI ID:
2377738
Journal Information:
Journal of Manufacturing Processes, Journal Name: Journal of Manufacturing Processes Vol. 116; ISSN 1526-6125
Publisher:
Society of Manufacturing Engineers; ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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