Thermostructural observation and adaptive control of fractal structure in ball-milled materials
This research introduces dynamic modeling and real-time control of fractal structure in particulate materials fabricated by the ball milling process, specifically addressing challenges of unavailable real-time non-destructive and non-invasive imaging measurements in the enclosed rotating vials. A de...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-12-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127518307652 |
| _version_ | 1818574739890765824 |
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| author | Matteo Aureli Abdelaziz Saeed Mohamed Alzaabi Aseel Gamal Suliman Hussien Constantine C. Doumanidis Syed Murtaza Jaffar I.E. Gunduz Claus Rebholz Nikolaos Kostoglou Yiliang Liao Charalabos C. Doumanidis |
| author_facet | Matteo Aureli Abdelaziz Saeed Mohamed Alzaabi Aseel Gamal Suliman Hussien Constantine C. Doumanidis Syed Murtaza Jaffar I.E. Gunduz Claus Rebholz Nikolaos Kostoglou Yiliang Liao Charalabos C. Doumanidis |
| author_sort | Matteo Aureli |
| collection | DOAJ |
| description | This research introduces dynamic modeling and real-time control of fractal structure in particulate materials fabricated by the ball milling process, specifically addressing challenges of unavailable real-time non-destructive and non-invasive imaging measurements in the enclosed rotating vials. A description of the internal temperature dynamics in the container is established along with a thermal regulator based on external temperature feedback. The fractal dimension is introduced as a structural measure, and its dynamics is established via an analytical formulation through a lumped model, along with a full thermostructural computational model of the ball milling particulate microstructure. These models are used as real-time observers of inaccessible internal states during the process. In addition, they are used as model references in an adaptive control system, regulating the fractal structure with adaptation via external temperature measurements, available experimentally via an infrared thermocouple. The controller is designed on the basis of the dynamic models and is tested experimentally. The controller is demonstrated to command the duration of the process at steady conditions to obtain the necessary thermal exposure yielding the desired microstructure for the ball-milled particulates. Keywords: Ball milling, Adaptive control, Aluminum alloys, Fractal dimension |
| first_indexed | 2024-12-15T00:30:33Z |
| format | Article |
| id | doaj.art-84b5f8cf86ec4900985a3cfa4f040fc7 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-15T00:30:33Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-84b5f8cf86ec4900985a3cfa4f040fc72022-12-21T22:42:02ZengElsevierMaterials & Design0264-12752018-12-01160772782Thermostructural observation and adaptive control of fractal structure in ball-milled materialsMatteo Aureli0Abdelaziz Saeed Mohamed Alzaabi1Aseel Gamal Suliman Hussien2Constantine C. Doumanidis3Syed Murtaza Jaffar4I.E. Gunduz5Claus Rebholz6Nikolaos Kostoglou7Yiliang Liao8Charalabos C. Doumanidis9Mechanical Engineering Department, University of Nevada, Reno 1664 N. Virginia Street, Reno, NV 89557-0312, USA; Corresponding author.Department of Mechanical Engineering, Khalifa University, Abu Dhabi, United Arab EmiratesDepartment of Mechanical Engineering, Khalifa University, Abu Dhabi, United Arab EmiratesDepartment of Electrical and Computer Engineering, Aristotelian University of Thessaloniki, GreeceDepartment of Mechanical Engineering, Khalifa University, Abu Dhabi, United Arab EmiratesSchool of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USADepartment of Mechanical & Manufacturing Engineering, University of Cyprus, Nicosia, CyprusDepartment of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, AustriaMechanical Engineering Department, University of Nevada, Reno 1664 N. Virginia Street, Reno, NV 89557-0312, USADepartment of Mechanical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates; Office of the Provost, Nazarbayev University, Astana, KazakhstanThis research introduces dynamic modeling and real-time control of fractal structure in particulate materials fabricated by the ball milling process, specifically addressing challenges of unavailable real-time non-destructive and non-invasive imaging measurements in the enclosed rotating vials. A description of the internal temperature dynamics in the container is established along with a thermal regulator based on external temperature feedback. The fractal dimension is introduced as a structural measure, and its dynamics is established via an analytical formulation through a lumped model, along with a full thermostructural computational model of the ball milling particulate microstructure. These models are used as real-time observers of inaccessible internal states during the process. In addition, they are used as model references in an adaptive control system, regulating the fractal structure with adaptation via external temperature measurements, available experimentally via an infrared thermocouple. The controller is designed on the basis of the dynamic models and is tested experimentally. The controller is demonstrated to command the duration of the process at steady conditions to obtain the necessary thermal exposure yielding the desired microstructure for the ball-milled particulates. Keywords: Ball milling, Adaptive control, Aluminum alloys, Fractal dimensionhttp://www.sciencedirect.com/science/article/pii/S0264127518307652 |
| spellingShingle | Matteo Aureli Abdelaziz Saeed Mohamed Alzaabi Aseel Gamal Suliman Hussien Constantine C. Doumanidis Syed Murtaza Jaffar I.E. Gunduz Claus Rebholz Nikolaos Kostoglou Yiliang Liao Charalabos C. Doumanidis Thermostructural observation and adaptive control of fractal structure in ball-milled materials Materials & Design |
| title | Thermostructural observation and adaptive control of fractal structure in ball-milled materials |
| title_full | Thermostructural observation and adaptive control of fractal structure in ball-milled materials |
| title_fullStr | Thermostructural observation and adaptive control of fractal structure in ball-milled materials |
| title_full_unstemmed | Thermostructural observation and adaptive control of fractal structure in ball-milled materials |
| title_short | Thermostructural observation and adaptive control of fractal structure in ball-milled materials |
| title_sort | thermostructural observation and adaptive control of fractal structure in ball milled materials |
| url | http://www.sciencedirect.com/science/article/pii/S0264127518307652 |
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