About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
A Comparison of Thermal History and Porosity Formation for Different Laser Melting Toolpaths |
Author(s) |
Marwan Haddad, Ronald Sellers, Hui Wang, Benjamin Gould, Sarah Wolff |
On-Site Speaker (Planned) |
Marwan Haddad |
Abstract Scope |
Experiments on laser melting of Ti-6Al-4V powder beds and powderless Ti-6Al-4V substrates were conducted at the Advanced Photon Source at Argonne National Laboratory. In situ monitoring via synchronized X-ray and infrared (IR) imaging systems enabled the capture of real-time images of the process. Our methodology consisted of measuring the melt pool dimensions from the X-ray images and correcting and calibrating the temperatures in the IR images by estimating an emissivity value using a simplified equation based on Planck's law. Our objectives are to estimate the melt pool dimension from IR images and to analyze and compare thermal history and porosity formation for different laser melting toolpaths under different process parameters. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |