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Evaluating Poly (Ether Ether Ketone) Powder Recyclability for Selective Laser Sintering Applications
Poly(ether ether ketone) (PEEK) is increasingly used in selective laser sintering (SLS) due to its superior mechanical and thermal …
Akanksha Patel
,
Varun Venoor
,
Feifei Yang
,
Xu Chen
,
Margaret J. Sobkowicz
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DOI
Process Control of Surface Quality and Part Microstructure in Selective Laser Sintering Involving Highly Degraded Polyamide 12 Materials
Polyamide 12 is one of the most extensively used semi-crystalline polymer materials to date in selective laser sintering (SLS) additive …
Feifei Yang
,
Tianyu Jiang
,
Greg Lalier
,
John Bartolone
,
Xu Chen
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DOI
Quantitative Influences of Successive Reuse on Thermal Decomposition, Molecular Evolution and Elemental Composition of Polyamide 12 Residues in Selective Laser Sintering
Since its addition to additive manufacturing (AM), polyamide 12 has dominated the selective laser sintering (SLS) market thanks to its …
Feifei Yang
,
Angela Schnuerch
,
Xu Chen
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DOI
Local Loop Shaping for Rejecting Band-Limited Disturbances in Nonminimum-phase Systems with Application to Laser Beam Steering for Additive Manufacturing
Closed-loop disturbance rejection without sacrificing overall system performance is a fundamental issue in a wide range of applications …
Tianyu Jiang
,
Hui Xiao
,
Jiong Tang
,
Liting Sun
,
Xu Chen
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DOI
Closed-loop High-fidelity Simulation Integrating Finite Element Modeling with Feedback Controls in Additive Manufacturing
A high-precision additive manufacturing (AM) process, powder bed fusion (PBF) has enabled unmatched agile manufacturing of a wide range …
Dan Wang
,
Xu Chen
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DOI
A Collaborative Sensing and Model-based Realtime Recovery of Fast Temporal Flows from Sparse Measurements
This paper considers the real-time recovery of a fast discrete signal (e.g., updated every T seconds) by using sparsely sampled sensor …
Hui Xiao
,
Yaakov Bar-Shalom
,
Xu Chen
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H-infinity-based Selective Inversion of Nonminimum-phase Systems for Feedback Controls
Stably inverting a dynamic system model is fundamental to subsequent servo designs. Current inversion techniques have provided …
Dan Wang
,
Xu Chen
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DOI
A Process Control and Interlayer Heating Approach to Reuse Polyamide 12 Powders and Create Parts With Improved Mechanical Properties in Selective Laser Sintering
Capable of building high-quality, complex parts directly from digital models, selective laser sintering (SLS) additive manufacture (AM) …
Feifei Yang
,
Tianyu Jiang
,
Greg Lalier
,
John Bartolone
,
Xu Chen
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DOI
Introduction to the Focused Section on Machine Learning, Estimation and Control for Intelligent Robotics
Owing to the explosive advancements in recent years in the areas of computational intelligence, material synthesis, and device …
Jiong Tang
,
Xu Chen
,
Yan Gu
,
Minghui Zheng
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Multivariable Robust Blade Pitch Control Design to Reject Periodic Loads on Wind Turbines
Large-scale wind turbines usually operate in turbulent wind fields. During turbine operation, periodic loads on blades are induced by …
Yuan Yuan
,
Xu Chen
,
Jiong Tang
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