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A Recursive System Identification With Non-Uniform Temporal Feedback Under Coprime Collaborative Sensing
A common assumption for real-time control systems design is that the sampling of input and output signals is uniform, periodic, and …
Jinhua Ouyang
,
Xu Chen
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DOI
A Review of Aging, Degradation, and Reusability of PA12 Powders in Selective Laser Sintering Additive Manufacturing
A popular form of additive manufacturing, SLS enables the unprecedented making of complex 3D parts with high mechanical performance. …
Feifei Yang
,
Navid Zobeiry
,
Ramulu Mamidala
,
Xu Chen
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DOI
Preheating Temperature Control and Low-Contrast Imaging Data Analytics for Laser Powder Bed Fusion
Laser powder bed fusion (LPBF) additive manufacturing has seen widespread use for its unique advantages in achievable part complexity …
Tianyu Jiang
,
Mengying Leng
,
Xu Chen
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DOI
Microstructure and Microhardness of Electron Beam Melted Ti-6Al-4V Components with Differential Thickness in Initial Deposition Layers
Electron beam powder bed fusion (EB-PBF) is a process to additively manufacture Ti–6Al–4V. Along with process induced …
Mohammad Sayem Bin Abdullah
,
Eric Bol
,
Garrett Kelley
,
Curtis Doyle
,
Rick Schleusener
,
Melody Mojib
,
Xu Chen
,
Dwayne Arola
,
Mamidala Ramulu
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DOI
Adaptive Lighting for Curved and Nonuniform Objects in Optomechanical Inspection Systems
Visual inspection is omnipresent and critical in precision manufacturing. However, complex geometries of parts hinder uniform …
Mark Gerges
,
Xu Chen
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A New Kinetic Modelling of Polyamide 12 Degradation in Selective Laser Sintering
A considerable amount of expensive polyamide 12 material remains unjoined in selective laser sintering (SLS) additive manufacturing. …
Feifei Yang
,
Xu Chen
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DOI
Control-oriented In-situ Imaging and Data Analytics for Coaxial Monitoring of Powder Bed Fusion Additive Manufacturing
Despite recent advancements in the powder bed fusion (PBF) additive manufacturing (AM), in-process monitoring and quality assurance …
Tianyu Jiang
,
Mengying Leng
,
Xu Chen
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DOI
A Combined Theoretical and Experimental Approach to Model Polyamide 12 Degradation in Selective Laser Sintering Additive Manufacturing
Selective laser sintering (SLS) generates complex high-performance parts from micrometer-diameter powders. In polyamide 12 SLS, a …
Feifei Yang
,
Xu Chen
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DOI
New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing
Despite the advantages and emerging applications, broader adoption of powder bed fusion (PBF) additive manufacturing is challenged by …
Dan Wang
,
Xinyu Zhao
,
Xu Chen
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DOI
Control-Oriented Modeling and Repetitive Control of In-Layer and Cross-Layer Thermal Interactions in Selective Laser Sintering
Although laser-based additive manufacturing (AM) has enabled unprecedented fabrication of complex parts directly from digital models, …
Dan Wang
,
Tianyu Jiang
,
Xu Chen
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DOI
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