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- 113Chemical and Materials Engineering, Department of/Research Articles and Materials (Chemical and Materials Engineering)
- 8Surgery, Department of
- 8Surgery, Department of/Orthopaedic Surgery
- 5Chemical and Materials Engineering, Department of/Process Systems Engineering
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- 14Rapid Solidification
- 12Impulse Atomization
- 11Undercooling
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- 7Atomization
- 7Microstructure
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2010-03-30
Guay, M., Fraleigh, L.M., Forbes, J.F.
Real-time optimization systems have become a common tool, in the continuous manufacturing industries, for improving process performance. Typically, these are on-line, steady-state, model-based optimization systems, whose effectiveness depends on a large number of design decisions. The work...
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A Hierarchical Constrained Reinforcement Learning for Optimization of Bitumen Recovery Rate in a Primary Separation Vessel
Download2020-01-01
Shafi, Hareem, Velswamy, Kirubakaran, Ibrahim, Fadi, Huang,Biao
This work proposes a two-level hierarchical constrained control structure for reinforcement learning (RL) with application in a Primary Separation Vessel (PSV). The lower level is concerned with servo tracking and regulation of the interface level against variances in ore quality by manipulating...
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A Long-Short Term Memory Recurrent Neural Network Based Reinforcement Learning Controller for Office Heating Ventilation and Air Conditioning Systems
Download2017-08-18
Yuan wang, Kirubakaran Velswamy, Biao Huang
Energy optimization in buildings by controlling the Heating Ventilation and Air Conditioning (HVAC) system is being researched extensively. In this paper, a model-free actor-critic Reinforcement Learning (RL) controller is designed using a variant of artificial recurrent neural networks called...
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2008
Poor control of hot strip mill loopers degrades strip width and gauge, and may even lead to mill breakdowns due to instability. In this study, dynamics of the looper-strip system and the control challenges it poses are discussed, and covariance control theory is applied to variance control design...
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2015-07-02
The Hybrid tank pilot plant was designed in Process Control Laboratory (PCL) of the University of Alberta at 2009. In this report, we try to construct a model for this process. Using the physical behavior of the plant, it is possible to have the nonlinear first principle dynamic model of that...
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Effects of Solidification Thermal Parameters and Bi Doping on Silicon Size, Morphology and Mechanical Properties of Al 15wt.% Si 3.2wt.% Bi and Al 18wt.% Si 3.2wt.% Bi alloys
Download2020-01-01
Dias, M., Oliveira, R., Kakitani, R., Cheung, N., Henein, H., Spinelli, J.E., Garcia, A.
The use of bismuth (Bi) in aluminum (Al) industries is recognized as prime importance because of possible recycling as alloying element in special applications such as those enhancing machinability. The effects of Bi interaction on solidification progress as well as on the resulting...
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2019-01-01
El Moghazi, S.N., Wolfe, T., Ivey, D.G, Henein, H.
Plasma transferred arc additive manufacturing is a growing technology in the additive manufacturing world. The plasma transferred arc additive manufacturing system’s ability to produce large samples, compared with other common additive manufacturing techniques, makes it highly desirable in many...
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2019-01-01
Valloton, J., Bogno, A.-A., Henein, H., Herlach, D.M., Sediako, D.
This paper reports on the undercooling and growth morphology of Al-4.5wt%Cu and Al-4.5wt%Cu-0.4wt%Sc with a focus on the effect of Sc addition. It is found that the addition of Sc reduces the undercoolings of both primary phase and eutectic. In addition, the morphology of the Al-4.5wt%Cu-0.4wt%Sc...
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2020-01-01
Henein, H., Bogno, A.-A., Hearn, W., Valloton, J.
Cubic metallic alloys generally grow along 〈100〉 directions due to the anisotropy of the solid-liquid interfacial energy. Under rapid solidification conditions, dendrites may deviate from 〈100〉 and develop unusual morphologies. Here, Al-alloy droplets (Al-4.5Cu, Al-10Si, Al-1.9Fe, Al-33Cu, all in...
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Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating Ouzo drop
Download2016-01-01
Tan, Huanshu, Diddens, Christian, Ly, Pengyu, Lohse, Detlef
Evaporating liquid droplets are omnipresent in nature and technology, such as in inkjet printing, coating, deposition of materials, medical diagnostics, agriculture, the food industry, cosmetics, or spills of liquids. Whereas the evaporation of pure liquids, liquids with dispersed particles, or...