| Course Unit Code | 352-0331/01 |
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| Number of ECTS Credits Allocated | 6 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | First Cycle |
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| Year of Study * | Third Year |
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| Semester when the Course Unit is delivered | Summer Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| SOF009 | Ing. Pavel Šofer, Ph.D. |
| Summary |
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1st Methods for digital recording of measured data, multifunction cards and signal analyzers.
2nd Measurement of machine drives, connection speed, torque and power tools. Measurement characteristics of pumps and fans, relationship pressure and flow.
3rd Monitor operation of machines. Starting and stopping of machines. Resonance and antiresonance.
4th Basic measurements of noise, noise source localization effectiveness of noise control measures.
5th Causes and symptoms of excessive vibration machines. Excessive vibration of rotors. Evaluation of spectral signals. Envelope signals.
6th Methods of measurement of frequency characteristics, their presentation and evaluation.
7th Methods of generating vibration of machines and mechanical structures. Operating deflection shapes of machines. Viscous vibration damping and hysteresis.
8th Detection of vibration attenuation of the oscillation decay ..
9th Endurance test machines, cyclic and random loading. Speeding up testing. SN curve, the assumptions for estimating pumping damage. |
| Learning Outcomes of the Course Unit |
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| The course is focused on introducing students to basic methods of experimental dynamics, ie. methods of testing and testing of static and dynamic properties of machines and equipment. To understand the management function, properties of the instruments and recording equipment, including sensors and multifunction cards and related software, are explained . |
| Course Contents |
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1. Methods for digital recording of measured data, multifunction cards and signal analyzers.
2. Measurement of characteristic of drives in the form of dependence of torque on rotational speed.
3. Monitoring machines. Run up and coast down of machines. Resonance and antiresonance.
4. Basic measurements of noise, noise source localization effectiveness of noise reduction.
5. Causes and symptoms of excessive vibration machines. Excessive vibration of rotors. Evaluation of frequency spectrum. Envelope signals.
6. Methods of measurement of frequency responses and their presentation.
7. Modes of generating vibration of machines and mechanical structures. Operating deflection shapes of machines. Viscous vibration damping and hysteresis.
8. Detection of vibration attenuation of the oscillation decay.
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| Recommended or Required Reading |
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| Required Reading: |
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RANDALL, R. B. Frequency Analysis. Brüel & Kjaer, 1987.
MITRA, SANJIT K. Digital signal processing. Boston : McGraw-Hill, 2001, ISBN 0-07-232105-9.
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Tůma, J. Zpracování signálů získaných z mechanických systémů užitím FFT, Sdělovací technika 1977.
Tůma, J. Výukový software Signal analyser a příslušná elektronická učebnice. Tůma, J. Diagnostika strojů, 1. vyd. Ostrava : Skripta VŠB - TU Ostrava, 2009. 138 s. ISBN 978-80-248-2116-0.
Tůma, J. Signal processing, 1. vyd. Ostrava : Skripta VŠB - TU Ostrava, 2009. 156 s. ISBN 978-80-248-2114-6. (http://fs1.vsb.cz/~tum52/skripta/)
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| Recommended Reading: |
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| CROCKER, M. (Editor) Handbook of noise and vibration control. New York: Wiley, 2007. ISBN 978-0-471-39599-7.Miláček, S. Měření a vyhodnocování mechanických veličin. Vydavatelství ČVUT, Praha 2001 |
| Miláček, S. Měření a vyhodnocování mechanických veličin. Vydavatelství ČVUT, Praha 2001 |
| Planned learning activities and teaching methods |
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| Lectures, Individual consultations, Tutorials, Experimental work in labs, Project work |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |
| Exercises evaluation | Credit | 35 | 20 |
| Examination | Examination | 65 | 16 |