352-0926/05 – Testing and Machine Diagnostics (TaDS)
| Gurantor department | Department of Control Systems and Instrumentation | Credits | 10 |
| Subject guarantor | doc. Ing. Miroslav Mahdal, Ph.D. | Subject version guarantor | doc. Ing. Miroslav Mahdal, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory type B |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | 2024/2025 |
| Intended for the faculties | FS | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
The aim of the course is to get acquainted with methods for testing machines, machine components and their diagnostics. Furthermore, hardware and software means for measuring quantities (sensors, measurement cards, signal analyzers, PULSE LabShop, MATLAB), input test signals and signal processing methodology in the range of knowledge necessary to master the preparation of a dissertation thesis. The student will be able to independently analyze the problem, define the methodology for testing and diagnosing machines and to present his results.
Teaching methods
Individual consultations
Project work
Summary
The subject is focused on methods for testing machines, machine components and diagnostics. It deepens the doctoral student's knowledge in the field of A/D and D/A converters, methods of measuring noise, vibration, force, position and revolutions, familiarization with sensors: accelerometers, laser vibrometers, measuring microphones, acoustic camera, intensity probes, capacitive and inductive position sensors. Analysis of test signals, signal generators, signal processing methods, time measurements, FFT, modal analysis, order analysis, life test definition and life prediction.
Compulsory literature:
Recommended literature:
Tůma, J. Kozubková, M., Pawlenka, M., Mahdal, M., Šimek, J. Theoretical and Experimental Analysis of the Bearing Journal Motion Due To Fluid Force Caused By the Oil Film. MM Science Journal. MM Publishing, 2018, 2018 (October), s. 2466-2472. ISSN 1803-1269.
Jablonská, J., Mahdal, M., Kozubková, M. Spectral Analysis of Pressure, Noise and Vibration Velocity Measurement in Cavitation. Measurement Science Review. De Gruyter, 2017, 17(6), s. 250-256. ISSN 1335-8871.
Tůma, J., Škuta, J., Mahdal, M., Los, J. Piezoaktuátory a piezomotory. DIAGO 2018: technická diagnostika strojů a výrobních zařízení: 37. mezinárodní vědecká konference: Orea Resort Devět Skal, Sněžné - Milovy. Ostrava: Asociace technických diagnostiků ČR, 2018. s. 1-9.
Tůma, J., Mahdal, M., Škuta, J., Wagnerová, R. Sondy přiblížení pro měření orbitů. DIAGO 2017: technická diagnostika strojů a výrobních zařízení: sborník 36. mezinárodní konference: 31.01.-01.02.2017. Ostrava: VŠB-TUO, 2017. s. 278-283.
Tůma, J., Šimek, J., Mahdal, M., Škuta, J, Wagnerová, R. Aktivně řízené kluzné ložisko pro vysokootáčkové rotory. DIAGO 2016: technická diagnostika strojů a výrobních zařízení: 35. mezinárodní vědecká konference : Hotel Harmonie I, Luhačovice. Ostrava: Asociace technických diagnostiků ČR, 2016. s. 324-329.
Tůma, J. Signal Analyser, software pro podporu výuky zpracování signálů. Ostrava: VŠB-TUO, 2002-2004.
Tůma, J. Vehicle gearbox noise and vibration, Wiley 2014.
Additional study materials
Way of continuous check of knowledge in the course of semester
Students prepare and defend a project related to the dissertation thesis.
E-learning
Other requirements
Mahdal, M., Frischer, R. Nedestruktivní diagnostika pevných objektů. In: XXXV. Seminar ASR 2010 Instruments and Control. Ostrava: VŠB-TUO, 2010. s. 255-260. ISBN 978-80-248-2191-7
Tůma, J. Diagnostika strojů. 1. vyd. Skripta VŠB-TUO, 2009.
Tůma, J. Signal processing. Skripta VŠB-TUO, FS, 2009, ISBN 978-80-248-2114-6.
Tůma, J. Zpracování signálů získaných z mechanických systémů. Sdělovací technika, Praha 1997, 174 s. ISBN 80-901936-1-7.
Tůma, J. Vehicle gearbox noise and vibration: measurement, signal analysis, signal processing and noise reduction measures. Chichster, West Sussex : John Wiley & Sons Ltd, 2014. ©2014.
Crocker, M. Handbook of noise and vibration control. New York: Wiley, 2007.
Randall, R. B. Frequency Analysis. Brüel & Kjaer, 1987.
Hassalt, J. R., Zaveri, K. Acoustic Noise Measurements. Brüel & Kjaer, 1988.
Broch, J. T. Mechanical vibration and shock measurements. Brüel & Kjaer, 1984.
Vold, H., Leuridan, J. High Resolution Order Tracking at Extreme Slew Rates, using Kalman Tracking Filters, SAE Technical Paper No. 931288, Noise & Vibration Conference & Exposition, Traverse City, Michigan, May, 1993.
Randall R. Vibration-Based Condition Monitoring. 2011 John Wiley & Sons, Ltd.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. A/D and D/A converters – types, function principles, static and dynamic properties.
2. Measurement of noise, vibration, force, position, and revolutions. Measuring elements: accelerometers, laser vibrometers, measuring microphones, acoustic camera, intensity probes, capacitive and inductive position sensors, tacho probes. Anti-aliasing filtering. FFT and 1/n signal analyzers – octave analysis technique.
3. Signal generators, input excitation signals (unit pulse, broad-spectrum noise, periodic signals, pseudorandom, etc.), electrodynamic exciters, piezoactuators.
4. Frequency analysis and order analysis of rotating and periodically working machines. Measurement of frequency spectra during start-up and run-down of machines.
5. Diagnostics of journal bearings - measurement on the Rotorkit system.
6. Shaft orbits in journal bearings – full spectra, issues of passive and active vibration suppression.
7. Measurement of frequency characteristics, modal analysis, testing of machines and equipment.
8. Life tests, prediction of machine life.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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