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Meeting MS&T23: Materials Science & Technology
Symposium Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
Presentation Title An Efficiency Study of Multi-Mode Laser Profiles
Author(s) Austin Tiley, Ersilia Cozzolino, Edward D. Herderick, Antonio Ramirez
On-Site Speaker (Planned) Austin Tiley
Abstract Scope Laser powder bed fusion (L-PBF) is an attractive additive manufacturing (AM) process for developing near-net shape parts to minimize post-processing costs. This can be applied for high-temperature alloys such as nickel superalloy 718 that is commonly used in aerospace applications. L-PBF build rates are typically 5-10 cubic centimeters per hour, which are not economical for the majority of the manufacturing industry. To better understand the constraints of these speeds, the CDME team evaluated two different laser beam geometries (traditional Gaussian and Ring) using an nLight multi-modal laser, with the end goal of being able to improve build rates by 10x and maintain energy consumption of the system. Outcomes from this study include: quantifying the energy consumption of a L-PBF system including laser usage, microstructure differences due to different solidification modes, and resulting mechanical properties. The culmination of these results were used to develop a direct comparison of part to part.


An Efficiency Study of Multi-Mode Laser Profiles
Customized Glove Box for In Situ Monitoring of Laser Directed Energy Deposition
Exploring a Supervisory Control System Using ROS2 and IoT Sensors
Fill Impact Welding: Additive Manufacturing through Ballistic Impact of Metallic Sheets
Implementing Statistical Process Control in Laser Powder Bed Fusion Metal Additive Manufacturing
In-situ Pyrometric Sensing for Real-time AM Process Monitoring and Control
Investigating the Effect of Part Geometry on Microstructure for Laser Powder Bed Fusion of Bismuth Telluride using In-Situ Process Monitoring
Melt Pool Scale Process Monitoring for Laser Hot Wire Additive Directed Energy Deposition
Quantification of Build Interruptions through In-Process Monitoring and Mechanical Test
Real Time Observations of In-Situ Alloying Molybdenum and Ti-6Al-4V in Laser Directed Energy Deposition Additive Manufacturing
Reinforcement Learning for In-situ Melt Pool Control during Laser Powder Bed Fusion
Robust Detection of L-PBF Process Anomalies Using High-speed On-axis Melt Pool Pyrometry
Two-color Melt Pool Thermal Imaging on Powder-blown Laser-DED to Advance Understanding of Melt Pool Thermal-fluid Physics

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