Measuring Techniques for Technical Diagnostics
FEKT-MMTDAcad. year: 2019/2020
The course deals with methods, sensors and instrumentation for measuring noise, vibration, ultrasound and thermovision diagnostics. Students will learn the technique of vibration measurement, noise and speed measurement as well as the basics of spectral analysis, bearings fault diagnosis, balancing and diagnostics of rotating machines. Other topics will be basics of modal analysis, calibration of sensors, use of thermal cameras and ultrasonic diagnostic equipment in industrial applications.
Learning outcomes of the course unit
The student will be able to describe the types and methods of technical diagnostics, explain a diagnostic problem, choose the appropriate measurement method, select right sensors and measuring instruments for the specific application. Student will be able to specify parts of measuring chain to realize measurements and evaluate the measured data.
The student who enrolls this course should be able to explain the basics principles of sensors, understand the electronic circuits used in sensing and measurement technology, able to apply basic methods of electrical measurement (voltage, current, resistance, capacitance and inductance) and be able to assemble measuring chain with instruments as oscilloscope, function generator, DAQ cards for measuring of analog and digital signals and be able to prepare and use the LabVIEW developing tool. This course follows to courses in undergraduate studies BMVE and BSNI. Student should have such language skills to understand some educational materials in English.
Recommended optional programme components
Recommended or required reading
Kreidl, Marcel, and Radislav Šmíd. "Technická diagnostika." BEN, Praha (2006) (CS)
Tůma, Jiří. Zpracování signálů z mechanických systémů užitím FFT. Praha, 1997 (CS)
Tůma, J. Vehicle Gearbox Noise and Vibration: Measurement, Signal Analysis, Signal Processing and Noise Reduction Measures. Wiley, Hoboken, NJ (2014), 260 pages, ISBN: 978-1-118-35941-9 (EN)
Škvor, Z. Akustika a elektroakustika. Praha: Academia, 2001. ISBN 80-200-0464-0 (CS)
Randal, R. B. Frequency Analysis, Bruel and Kjaer. 1987 (EN)
Vibrodiagnostika, skripta VŠB-TU, Ostrava 2004, ISBN 80-248-0650-9 (CS)
Bilošová, A. - Experimentální modální analýza. Skriptum VŠB TU Ostrava (CS)
Tůma, J. Diagnostika strojů, 1. vyd. Ostrava : Skripta VŠB - TU Ostrava, 2009. 138 s. ISBN 978-80-248-2116-0 (CS)
Kopec B. a kol.: Nedestruktivní zkoušení materiálů a konstrukcí. CERM, Brno, 2009, ISBN 978-80-7204-591-4 (CS)
Planned learning activities and teaching methods
Teaching methods depend on the type of education which are described in the Article No. 7 of the Study and Examination Regulations of BUT. Techning methods include lectures and practical laboratories.
Assesment methods and criteria linked to learning outcomes
Up to 40 points for the laboratory exercises - laboratory reports from specific tasks.
Up to 60 points for final examination - written form, personal participation.
Language of instruction
The main content of the lectures covered the following areas:
1. Technical devices for diagnostics - types of diagnostics, sensors and analyzers for diagnosis, methods of testing.
2. Vibrodiagnostics - measuring of vibrations (vibration analysis, spectral measurements, averaging issues, detecting of natural frequencies).
3. Diagnostics of rotating machines, balancing of rotating machines, bearings fault diagnosis.
4. Modal analysis, vibration testing - modal testing, test by vibrations and shocks.
5. Acoustic measurement - acoustic quantities (sound power, sound pressure, sound intensity), near field, far field, acoustical holography.
6. Calibration of the sensors - accelerometers, microphones, gyroscopes; types of calibration (primary, secondary), interferometry, standards.
7. Thermovision diagnostics - thermography, measurement using thermal cameras.
8. NDT methods - ultrasonic defectoscopy, magnetic methods, X-ray methods, eddy-current testing, acoustic emission - methods of testing.
The goal of the course is to expand knowledge in technical diagnostics. Selected measurement methods and their application in practice will be presented, e.g. vibrodiagnostics, acoustic measurement, ultrasonic defectoscopy, thermovision diagnostics, etc. The aim is to give to students an overview and understanding of advanced diagnostic methods by using special sensors, analyzers and other advanced instruments.
Specification of controlled education, way of implementation and compensation for absences
Definition of controlled education will be established by announcement published by course supervisor every year. Mandatory participation in laboratory exercises, in case of absence the exercise work can be supplemented with alternative exercise in same week or with a self-study of additional literature.