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RISFatigue Scattering Analytics and Prediction of SS 316L Fabricated by Laser Powder Bed Fusion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Laser powder bed fusion (LPBF) is an enabling process manufacture of complex metal components. However, LPBF is prone to generate geometrical defects (e.g., porosity, lack of fusion), which causes a significant fatigue ...
Analysis and Interpretation of Longitudinal Waves in Periodic Multiphase Rods Using the Method of Reverberation Ray Matrix Combined With the Floquet Bloch Theorem
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The method of reverberationray matrix (MRRM) combined with the Floquet–Bloch theorem, which serves as an alternative method, is presented for accurately analyzing longitudinal waves in general periodic multiphase rods. ...
Three Dimensional Temperature Gradient Mechanism in Selective Laser Melting of Ti 6Al 4V
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Selective laser melting (SLM) is widely used in making threedimensional functional parts layer by layer. Temperature magnitude and history during SLM directly determine the molten pool dimensions and surface integrity. ...
Formation of Bending Wave Band Structures in Bicoupled Beam Type Phononic Crystals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Beamtype phononic crystals as one kind of periodic material bear frequency bands for bending waves. For the first time, this paper presents formation mechanisms of the phase constant spectra in passbands of bending waves ...
Physics-Guided Long Short-Term Memory Networks for Emission Prediction in Laser Powder Bed Fusion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Powder bed fusion (PBF) is an additive manufacturing process in which laser heat liquefies blown powder particles on top of a powder bed, and cooling solidifies the melted powder particles. During this process, the laser ...
Physics-Informed Machine Learning of Argon Gas-Driven Melt Pool Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Melt pool dynamics in metal additive manufacturing (AM) is critical to process stability, microstructure formation, and final properties of the printed materials. Physics-based simulation, including computational fluid ...
Assimilation of Atmospheric Radio Refractivity Using a Nonhydrostatic Adjoint Model
Publisher: American Meteorological Society
Abstract: Recently, a new approach to remote sensing of water vapor based on the Global Positioning System (GPS) has been proposed. Specifically, the bending of radio signals propagating from GPS satellites to a receiver on a low ...
Variational Assimilation of Precipitable Water Using a Nonhydrostatic Mesoscale Adjoint Model. Part I: Moisture Retrieval and Sensitivity Experiments
Publisher: American Meteorological Society
Abstract: Recently it has been proposed that the phase delay associated with the radio signals propagating from GPS satellites to a ground-based GPS receiving station can be used to infer the vertically integrated water vapor ...
Laboratory and Analytical Model Studies of the Faroe Bank Channel Deep-Water Outflow
Publisher: American Meteorological Society
Abstract: Results are described from a combined laboratory and analytical study of the dense, deep-water flow through the Faroe Bank Channel. Archival field data have been used to specify the velocity and density field conditions ...
Assessing Modeled Mesoscale Stirring Using Microscale Observations
Publisher: American Meteorological Society