Course detail
Experimental Mechanics
FSI-REMAcad. year: 2024/2025
The course is concerned with the following topics: Fundamentals of methods of electrical measurement of mechanical quantities. Elaboration of continuous and discrete stochastic processes
in the time and the frequency domain. Methods for the determination of stresses and strains at a point and in a certain area of a body (especially strain gages, reflection photoelasticity, brittle lacquers, DIC). Measurement of kinematic quantities, forces, torques and pressures.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Entry knowledge
Rules for evaluation and completion of the course
Examination - combined (written and oral). In written part students have to prove knowledge of basic terms, important principles and their application; in the oral part the discussion over written part and records from laboratory exercises follows.
Attendance at practical training is obligatory. One absence can be compensated by attending a seminar with another group in the same week, or by working out of substitute assignments. More absences are compensated by additional assignments according to the instructions of the tutor.
Aims
Students will have a clear idea of current possibilities of experimental examination of selected mechanical quantities which are necessary for reliability assessment of machines and their elements. They will acquire basic practical knowledge and experiences and will be able to formulate real requirements for these activities in specialized institutions and professionally evaluate their results.
Study aids
Prerequisites and corequisites
Basic literature
Harris, C.M.: Shock and Vibration Handbook, McGraw Hill 1996
Kobayashi, A.S.: Handbook on Experimental Mechanics., Prentice Hall, New Jersey 1987
Recommended reading
Miláček, S.: Měření a vyhodnocování mechanických veličin, ČVUT Praha 2001
Vlk M. et al., Experimentální mechanika. VUT FSI 2003 (www.fme.vutbr.cz/opory)
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Classification of course in study plans
- Programme N-IMB-P Master's
specialization IME , 1 year of study, winter semester, compulsory
specialization BIO , 1 year of study, winter semester, compulsory - Programme N-MET-P Master's 1 year of study, winter semester, compulsory
- Programme C-AKR-P Lifelong learning
specialization CZS , 1 year of study, winter semester, elective
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
2. Description of measuring chain.
3. Passive and active.
4. Continuous and discrete signals - methodology of their processing.
5. Digital signal filtering.
6. Devices for measurement of mechanical quantities.
7. Measurement of kinematic quantities.
8. Methods for determination of stresses and deformations of bodies.
9. Properties of strain gages.
10. Criteria for optimal selection of strain gages.
11. Optical methods (DIC, photoelasticity, moiré, holography, specle.)
12. Methods for measurement of residual stresses. Cracks detection.
13. Measurement of forces, torques and pressures.
Laboratory exercise
Teacher / Lecturer
Syllabus
2. Uncertainties in measurement. Theoretical problems in statistical elaboration of measurement results.
3. Determination of gage factor of strain gage.
4. Plain stress measurement - combination of bending and torque.
5. Computer processing of random processes.
6. Bar bending.
7. Assessment of load cell element.
8. Dynamics of rotor systems.
9. Membrane theory of shell.
10. Comparison of computational modeling and experiment.
11. Self-compensation of strain gages.
12. Digital image correlation.
13. Measurement of residual stresses by the hole drilling method.
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