352-0536/01 – Machine Condition Monitoring IV (TD4)

Gurantor departmentDepartment of Control Systems and InstrumentationCredits4
Subject guarantorprof. Ing. Jiří Tůma, CSc.Subject version guarantorprof. Ing. Jiří Tůma, CSc.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year1Semestersummer
Study languageCzech
Year of introduction2004/2005Year of cancellation
Intended for the facultiesFSIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
TUM52 prof. Ing. Jiří Tůma, CSc.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Combined Credit and Examination 14+4

Subject aims expressed by acquired skills and competences

The main objective of the lecture on the technical diagnostics IV is to give students knowledge of basic properties transducers, sensors for noise and vibration diagnostics, as well as become familiar with the technique of noise, vibration and rotational speed measurements, the spectral analysis in the diagnosis of sliding and roller bearings, gear units and combustion engines. Another objective is to describe the basics of balancing rotors, evaluation of operational deflection shapes and modal analysis of machine components and structures. Understanding the methods used to analyze the diagnostic measurements in industrial applications. The aim is to reach independent decisions about the result of measurements and to assess the state machinery.

Teaching methods

Lectures
Individual consultations
Tutorials
Experimental work in labs
Project work

Summary

Students get knowledge, which is now routinely expect from mechanical engineers in testing labs, in design (engineering) offices, in the department for inspection and in quality control or diagnostics for maintenance. Students will learn how to perform frequency analysis and signal other procedures that are commonly used in the diagnosis of mechanical equipment via measurement speed, vibration and noise. Students will be familiar with the signatures of common defects in bearings, in gear units and in motors. The lectures are focused as well on measuring operational deflection shapes and modal analysis. Introduction course is a response to the penetration of electrical engineering in machines and requirements of market for engineering products in the countries of the European Communities.

Compulsory literature:

[1] Oppenheim, A, V. - Schafer, R.W.: Discrete-time signal processing. Prentice-Hall, Inc., Upper Saddle River, New Jersey 07457. [2] Tůma, J.: Vehicle gearbox noise and vibration, Wiley, 2001.

Recommended literature:

[1] Mitra, S.K.: Digital Signal Processing. McGraw-Hill Irwin, Boston, 2001.

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

1. Vibration and acoustic diagnostics, special sensors, signal processing methods. 2. A/D converters (successive approximation, sigma-delta and flash). Antialiasing filters. 3. Speed sensor for diagnostics. Optical probes. Incremental angle sensors (encoders). Laser sensor torsional vibrometer. 4. Vibration transducers (sensors for speed and acceleration) and dynamic forces. Piezoelectric sensors. Laser vibration sensor. Calibration 5. Measuring microphones. Probe for measuring sound intensity. Frequency weighting A, B, C, decibels scale. Sound level meter. Calibration pistonphone. 6. Diagnosis of rolling bearings. Measurement in quality control of production and in operational diagnostics. Frequency of defects and the importance of using the envelope signal. 7. Diagnosis of rotor systems with sliding bearings. Proximity probes. Measurement of orbits, full spectrum of vibration excited by flow of lubricant (whirl and whip) 8. Diagnostics of gears. Calculation of toothmeshing frequency. Planetary gearboxes. Measurement noise, vibration and transmission error of a gear train. 9. Diagnosis of internal combustion engines, measuring uniformity of rotation. 10. Device for measuring frequency responses. Principle of a vibrator (shaker). Hammers for modal analysis. 11. Measurement of operational deflection shapes, and their use for diagnosis of mechanical structures. 12. Modal analysis of mechanical structures . 13. Evaluation of the Wohler curve (stress-number). , measurement and evaluation methods for loading spectra based on rain-flow. Application for the lifetime prediction.

Conditions for subject completion

Combined form (validity from: 1960/1961 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 35 (35) 0
                Project Project 20  0
                Written exam Written test 15  0
        Examination Examination 65 (65) 0
                Written examination Written examination 20  0
                Oral Oral examination 45  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2012/2013 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2012/2013 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2011/2012 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2011/2012 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2010/2011 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2010/2011 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2009/2010 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2009/2010 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2004/2005 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner