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Flaw Detection in Multi-Laser Powder Bed Fusion Using In Situ Coaxial Multi-Spectral Sensing and Deep Learning
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Multi-laser powder bed fusion (M-LPBF) systems are garnering increased attention in metal additive manufacturing as they promise increased productivity and part size without sacrificing feature resolution or mechanical ...
Effect of Substrate Thickness and Preheating on the Distortion of Laser Deposited Ti–6Al–4V
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of substrate surface preheating on part distortion in laser cladding is investigated through the experimental results of laser deposited Ti–6Al–4V. In situ temperature and distortion measurements were used to ...
Predicting Microstructure From Thermal History During Additive Manufacturing for Ti-6Al-4V
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the repeated thermal cycling that occurs with the processing of each subsequent layer, the microstructure of additively manufactured parts undergoes complex changes throughout the deposition process. Understanding ...
Physics-Based Multivariable Modeling and Feedback Linearization Control of Melt-Pool Geometry and Temperature in Directed Energy Deposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: There has been continuing effort in developing analytical, numerical, and empirical models of laser-based additive manufacturing (AM) processes in the literature. However, advanced physics-based models that can be directly ...
An Extended Lumped-Parameter Model of Melt–Pool Geometry to Predict Part Height for Directed Energy Deposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: There is a need for the development of lumped-parameter models that can be used for real-time control design and optimization for laser-based additive manufacturing (AM) processes. Our prior work developed a physics-based ...