Two-color high speed thermal imaging system for laser-based additive manufacturing process monitoring
Patent
·
OSTI ID:1892948
Monitoring melt pool temperature in laser powder bed fusion by providing a build laser that produces a laser beam that is directed onto the melt pool and produces an incandescence that emanates from the melt pool, receiving the incandescence and producing a first image having a first spectral band and a second image having a second spectral band, and determining the ratio of said first image having a first spectral band and said second image having a second spectral band to monitor the melt pool temperature.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-07NA27344
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Number(s):
- 11,338,390
- Application Number:
- 16/273,953
- OSTI ID:
- 1892948
- Country of Publication:
- United States
- Language:
- English
Monte-Carlo modelling to determine optimum filter choices for sub-microsecond optical pyrometry
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