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Title: Compact absorptivity measurement system for additive manufacturing

Abstract

The present disclosure relates to a powdered bed fusion additive manufacturing (PBFAM) apparatus. The apparatus uses a container for holding a quantity of powdered material. The container has a bottom wall for supporting the powdered material, wherein the bottom wall is made from the same material as the powdered material. A temperature sensing subsystem is coupled to a portion of the container for detecting a temperature of the container. A laser generates an optical beam directed at the powdered material held by the container for melting the powdered material. A controller receives temperature information from the temperature sensing subsystem and determines an absorptivity of the powdered material based on the temperature information.

Inventors:
; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1650878
Patent Number(s):
10646960
Application Number:
15/723,922
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/03/2017
Country of Publication:
United States
Language:
English

Citation Formats

Rubenchik, Alexander M., Matthews, Manyalibo Joseph, and Trapp, Johannes. Compact absorptivity measurement system for additive manufacturing. United States: N. p., 2020. Web.
Rubenchik, Alexander M., Matthews, Manyalibo Joseph, & Trapp, Johannes. Compact absorptivity measurement system for additive manufacturing. United States.
Rubenchik, Alexander M., Matthews, Manyalibo Joseph, and Trapp, Johannes. Tue . "Compact absorptivity measurement system for additive manufacturing". United States. https://www.osti.gov/servlets/purl/1650878.
@article{osti_1650878,
title = {Compact absorptivity measurement system for additive manufacturing},
author = {Rubenchik, Alexander M. and Matthews, Manyalibo Joseph and Trapp, Johannes},
abstractNote = {The present disclosure relates to a powdered bed fusion additive manufacturing (PBFAM) apparatus. The apparatus uses a container for holding a quantity of powdered material. The container has a bottom wall for supporting the powdered material, wherein the bottom wall is made from the same material as the powdered material. A temperature sensing subsystem is coupled to a portion of the container for detecting a temperature of the container. A laser generates an optical beam directed at the powdered material held by the container for melting the powdered material. A controller receives temperature information from the temperature sensing subsystem and determines an absorptivity of the powdered material based on the temperature information.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}

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