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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing: Large-Scale Metal Additive Manufacturing
Presentation Title A Machine Learning-based Geometric Compensation Method for Metal Additive Manufacturing
Author(s) Wen Dong, Albert C. To
On-Site Speaker (Planned) Wen Dong
Abstract Scope The large thermal gradients induced during the metal additive manufacturing (AM) lead to residual stress and deformation in the as-built part and the build plate, thereby degrading the performance and quality of the product and increasing the difficulty of post-processing like machining and cutting. The present work develops a machine learning-based geometric compensation method to reduce the distortion caused by metal AM processes. The method includes three steps: (1) employ both numerical simulations and experimental optical scanning to determine the distortion of the as-built part; (2) establish the mapping relation between the designed and the as-built geometry by neural networks, and generate the compensated shape; (3) convert the compensated shape to CAD files that manufacturers can directly use. The experimental validation shows that the proposed approach is able to effectively improve the geometric accuracy of the as-built part and reduce the residual stress level.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Machine Learning-based Geometric Compensation Method for Metal Additive Manufacturing
A Proposed Sustainable Framework to Assess Wire Arc Additive Manufacturing Efficiency in Processing of Different Mechanical Components
An Investigation of the Properties of Stamping Tool Inserts Manufactured Using a Novel Wire Deposition Additive Manufacturing Process
Effect of Inhomogeneous Grain Size on the Deformation Characteristics of Bimetallic Additively Manufactured Structure (BAMS) of 316L Austenitic Stainless Steel and Inconel 625
High Deposition Rate Wire Arc Directed Energy Deposition of 316L for Pressure Retaining Components in Nuclear Applications
Hybrid Metal Manufacturing of Large Freeform Geometries
Manufacturing Large Scale Metal Parts via AM – Current and Future Directions
Microstructure Modification of GMAW-DED 316L Stainless Steel
Moving Heat Source Process Simulation for Wire Arc Additive Manufacturing via a Mesh-free Method and GPU Computing
Novel Thermal Management Technique for Additive Manufacturing
Now On-Demand Only - Development of 3D Metal Printing for Toolmaking
Process Development for Laser Hot Wire Additive Manufacturing of Ti-6Al-4V
Thermo-mechanical FEM Modeling and Machine Learning of Distortion on Overhang Structure in Laser Powder Bed Fusion Additive Manufacturing
Towards Understanding Microstructure Evolution during Wire Arc Additive Manufacturing of Maraging 250 Thin-wall Parts
Wire Arc Processing of Stainless Steels; Microstructure and Properties
Wire + Arc Additive Manufacturing (WAAM) of Al0.1CoCrFeNi High-Entropy Alloy (HEA)

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