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Lecturer(s)
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Jirásková Petra, Ing. Ph.D.
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Course content
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Lectures: 1. Methods of modelling of spinning processes system and fibre products. 2. Theoretical, means for dynamic and probability modelling. 3. Transformation of mass unevenness in spinning technology. 4. Dynamic model of flats card system. 5. Dynamic model of drafting system. 6. OE - rotor spinning system as a dynamic system. 7. Theory of transformation of mass unevenness on the OE - rotor spinning system. 8. Dynamic model of cyclic doubling in the rotor. 9. Probability model of roller card system. 10. Probability model of flats card system. 11. Probability model of combing roller action in the OE - rotor spinning system. 12. Probability model of fibre flow in the transport channel on the OE - rotor spinning machine. 13. Probability model of breakage rate on the OE - rotor spinning system. 14. Mechano-physical model of mechanical action in the bodies of textil windings (yarn windings). Practice: 1. Introduction - overview of the problem. 2. - 5. Seminary work No. 1: Parameters of drafting device and its influence on change of mass irregularity - application of transformation laws resulting from dynamical model of system of drafting arrangement of ring spinning machine. 6. - 9. Seminary work No. 2: Influence of high-revolution rotor spinning machine on quality of yarn - application of dynamical model of system of opening device and system of back doubling for technological condition of high-revolution rotor spinning, determination of influence on mass irregularity of final yarn. 10. - 13. Seminary work No. 3: Failure at proces of yarn formation on rotor spinning machine - application of probability model of yarn breakage on proces of yarn formation at top production capacity of spinning unit. 14. Conclusion, total evaluation, credit.
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Learning activities and teaching methods
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Monological explanation (lecture, presentation,briefing), Self-study (text study, reading, problematic tasks, practical tasks, experiments, research, written assignments), Written assignment presentation and defence, Project teaching
- Class attendance
- 56 hours per semester
- Semestral paper
- 40 hours per semester
- Home preparation for classes
- 28 hours per semester
- Preparation for exam
- 40 hours per semester
- Presentation preparation (report)
- 10 hours per semester
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Learning outcomes
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The aim of this subject is to acquaint students with kinds and signification of models of spinning processes, systems and fibres products. Within this course application of these models is realised: The dynamic model - transformation of mass unevenness by spinning systems, the probability model - fibre transport and fibre position in complex spinning systems, process failures, the mechano-physical model - influence of technological device on fibre material mechanical effect in package bodies.
Student orientates himself in problem area of theory and modeling of spinning processes.
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Prerequisites
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Basic knowledge from the area of Spinning, knowledge of subjects: Mathematics 1, 2.
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Assessment methods and criteria
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Combined examination
Credit: Working out and defence of seminary work. Exam: oral.
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Recommended literature
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Klein, W. New spinning system. Textile Institute, Volume 5. Textile Institute, 1993. ISBN 1 870812557.
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Klein, W. Ring spinning. Textile Institute, Volume 4. Textile Institute, 1987. ISBN 0 900739 94 0.
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Klein, W. The technology of short staple spinning. Textile Institute, Volume 1. Textile Institute, 1987. ISBN 0 900739 91 6.
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LAWRENCE, C. A. Fundamentals of spun yarn technology. Boca Raton: CRC Press LLC, 2003. ISBN 1-56676-821-7.
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URSÍNY, P. Předení I. 2.vydání. Liberec: Technická univerzita v Liberci, 2006. ISBN 80-7272-077-9.
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URSÍNY, P.:. Předení II. Skriptum, TU Liberec. Liberec, 2009.
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URSÍNY, P.:. Simulation of the processing of fibrous products in the OE- rotor spinning systém. Fibres and Textiles in Eastern Europe, 18 (2010), 3 (80), p. 43-46..
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Ursíny, P. System Modelling on the New Spinning Technologies. Vlákna a textil (Fibres and Textiles), 11,.
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