Using pyrometry to identify porosity in additively manufactured structures
Abstract
A method and apparatus for identifying porosity in a structure made by an additive manufacturing process in which a laser is scanned across layers of material to form the structure. Pyrometry data comprising images of the layers acquired during additive manufacturing of the structure is received. The pyrometry data is used to generate temperature data comprising estimated temperatures of points in the layers in the images of the layers. The temperature data is used to identify shapes fit to high temperature areas in the images of the layers. Conditions of the shapes fit to the high temperature areas in the images of the layers are identified. Outlier shapes are identified in the shapes fit to the high temperature areas in the images of the layers using the conditions of the shapes.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1998278
- Patent Number(s):
- 11623408
- Application Number:
- 16/817,340
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
- DOE Contract Number:
- NA0003525
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 03/12/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Mitchell, John A. Using pyrometry to identify porosity in additively manufactured structures. United States: N. p., 2023.
Web.
Mitchell, John A. Using pyrometry to identify porosity in additively manufactured structures. United States.
Mitchell, John A. Tue .
"Using pyrometry to identify porosity in additively manufactured structures". United States. https://www.osti.gov/servlets/purl/1998278.
@article{osti_1998278,
title = {Using pyrometry to identify porosity in additively manufactured structures},
author = {Mitchell, John A.},
abstractNote = {A method and apparatus for identifying porosity in a structure made by an additive manufacturing process in which a laser is scanned across layers of material to form the structure. Pyrometry data comprising images of the layers acquired during additive manufacturing of the structure is received. The pyrometry data is used to generate temperature data comprising estimated temperatures of points in the layers in the images of the layers. The temperature data is used to identify shapes fit to high temperature areas in the images of the layers. Conditions of the shapes fit to the high temperature areas in the images of the layers are identified. Outlier shapes are identified in the shapes fit to the high temperature areas in the images of the layers using the conditions of the shapes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {4}
}
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Works referenced in this record:
Sensing and Control of Additive Manufacturing Processes
patent-application, April 2019
- Penny, Ryan Wade; Hart, Anastasios John
- US Patent Application 16/114188; 20190118300
Real-time Adaptive Control of Manufacturing Processes Using Machine Learning
patent-application, May 2020
- Noone, Jordan; Ellis, Tim
- US Patent Application 16/688740; 20200166909
Three-Dimensional Printing of Three-Dimensional Objects
patent-application, September 2018
- Symeonidis, Kimon; Mendelsberg, Rueben Joseph; Lappas, Tasso
- US Patent Application 15/909406; 20180250772
Correction of Non-Imaging Thermal Measurement Devices
patent-application, May 2019
- Dave, Vivek R.; Cola, Mark J.
- US Patent Application 16/182462; 20190134709
In-Situ Defect Detection in Laser Powder Bed Fusion by Using Thermography and Optical Tomography—Comparison to Computed Tomography
journal, January 2020
- Mohr, Gunther; Altenburg, Simon J.; Ulbricht, Alexander
- Metals, Vol. 10, Issue 1
In-Process Quality Assessment for Additive Manufacturing
patent-application, May 2018
- Goldfine, Neil J.; Dunford, Todd M.
- US Patent Application 15/796351; 20180120260
Skillful Three-Dimensional Printing
patent-application, June 2017
- Buller, Benyamin; Lappas, Tasso; Mendelsberg, Rueben
- US Patent Application 15/374821; 20170165792
Method and System for Additive Manufacturing of Cooling Passages Using High Energy Source
patent-application, July 2015
- Denney, Paul E.; Peters, Steven R.
- US Patent Application 14/504499; 20150209910
Multi-Sensor Quality Inference and Control for Additive Manufacturing Processes
patent-application, June 2016
- Dave, Vivek R.; Clark, David D.; Roybal, Matias
- US Patent Application 14/945247; 20160185048
Optics, Detectors, and Three-Dimensional Printing
patent-application, June 2018
- Milshtein, Erel; Buller, Benyamin; Brudny, Alexander
- US Patent Application 15/830470; 20180154443
Porosity prediction: Supervised-learning of thermal history for direct laser deposition
journal, April 2018
- Khanzadeh, Mojtaba; Chowdhury, Sudipta; Marufuzzaman, Mohammad
- Journal of Manufacturing Systems, Vol. 47
Stainless Steel 304L LENS AM Process Monitoring Using In-Situ Pyrometer Data
journal, July 2018
- Stockman, Tom; Knapp, Cameron; Henderson, Kevin
- JOM, Vol. 70, Issue 9
Layer-Based Defect Detection Using Normalized Sensor Data
patent-application, September 2017
- Dave, Vivek R.; Cola, Mark J.
- US Patent Application 15/465384; 20170266762