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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advanced Real Time Imaging
Presentation Title Machine Learning for In-situ Detection of Local Heat Accumulation in Additive Manufacturing
Author(s) David Guirguis, Conrad Tucker, Jack Beuth
On-Site Speaker (Planned) David Guirguis
Abstract Scope Metal additive manufacturing is associated with thermal cycles of high rates of heating, melting, cooling, and solidification. Some areas within the build experience thermal cycles depending on the paths of the energy source. In addition, geometrical features, such as thin walls and overhangs, can lead to heat accumulation which affects the microstructure, fatigue life, and induced residual stresses that may lead to dimensional distortion and cracking. Identification of significant heat accumulation can be used for part quality monitoring, to inform the design process to enhance the quality of printed parts, and to optimize the process parameters. In the present work, we use in-situ thermal monitoring of builds by IR imaging. A computational framework, employing unsupervised machine learning, is developed to detect zones of heat accumulation in the CAD geometry. The effectiveness of this framework is demonstrated by implementation on builds with different geometrical features.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Machine Learning, Characterization

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

4D Microstructural Evolution of Bismuth (Bi) Phase during Solidification of Sn-58Bi Solder
Behavior of Plastic Ashes in Gasification Environments
Energy Absorption Properties of Open-Cell Rhombic Dodecahedron Cellular Lattice Structures Under Shock Compression
Estimation of Interfacial Strain Response for a Bi-material Strip in Tensile and Shear Loading Using THz-TDS
High-Temperature Wetting of Calcium Alloys and Molten Salts
In-situ Monitoring and Post Operando Analysis of Additively Manufacturing Lunar Regolith Simulants Parts
In-situ TEM Study of Rapidly Solidifed AlCuLi Based Alloys
In-situ Visualization of Retrograde Melting Phenomenon During Solidification of Boron-bearing Steels
L-9: In-situ Magnetic Computed Tomography for Additive Manufacturing
Machine Learning for In-situ Detection of Local Heat Accumulation in Additive Manufacturing
Mapping the Melt Pool Variability in L-PBF Additive Manufacturing by High-Speed Imaging
Microstructure Evolution during Laser-based Powder Bed Fusion Studied by Operando X-ray Radiography
Prediction of Laser Absorptivity from Synchrotron X-ray Images Using Deep Convolutional Neural Networks
Real-time Plasmon-Enhanced Colorimetric Imaging
Real Time Imaging of Laser Melting and Re-Solidification
Recent Advances in Ultrafast Real-time Imaging of Sonoprocessing Advanced Materials
Study of Fracture Behaviors of Epoxy-Alumina Composite Using Mechanical Testing Coupled with Micro-CT
The Influence of Temperature on Strength: Are Concentrated BCC Alloys Different than Elements and Dilute Alloys?
Thermal Stability of fcc-bcc Nanolaminates Containing 3D Interfaces
Three-dimensional Assessment of Strain Localization at the Sub-grain Level of a Ni-based Superalloy at Low and High Temperature Using Laser Scanning Confocal Microscopy
Visualization of Molten Slag Suspension by Electrical Impedance Tomography

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