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Experimental Methods in Mechanics

* Exchange students do not have to consider this information when selecting suitable courses for an exchange stay.

Course Unit Code330-0318/03
Number of ECTS Credits Allocated5 ECTS credits
Type of Course Unit *Compulsory
Level of Course Unit *First Cycle
Year of Study *Third Year
Semester when the Course Unit is deliveredWinter Semester
Mode of DeliveryFace-to-face
Language of InstructionCzech
Prerequisites and Co-Requisites Course succeeds to compulsory courses of previous semester
Name of Lecturer(s)Personal IDName
FOJ08doc. Ing. František Fojtík, Ph.D.
SOF007doc. Ing. Michal Šofer, Ph.D.
Summary
Basics of photoelasticity - a linear polarized light species, temporary
birefringence, Wertheim law isocline lines, isochromatic, isostatic. Determination voltage at no-load circuit model, reflection photoelasticity. basics
tensometry - principle basic types of strain gauges, bridge wire,
temperature compensation, evaluation of strain gauge rosettes, strain sensors.
Learning Outcomes of the Course Unit
Basics of photoelasticity - a linear polarized light species, temporary
birefringence, Wertheimův law izoklinné lines, izochromatické, isostatic. Determination voltage at no-load circuit model, reflection photoelasticity. basics
tensometry - principle basic types of strain gauges, bridge wire,
temperature compensation, evaluation of strain gauge rosettes, strain sensors.
Course Contents
The main objective of the course is to introduce students to various experimental methods used in technical practice. The subject is divided into two related parts. In the first part, the students are familiar with the basics of vector calculus, orthogonal transformation, eigenvalue problem of discrete Fourier transform. The practical lessons are designed in the form of using acquired knowledge to solve concrete examples on the above mentioned topics by means of MATLAB software.

The second part of the subject is focused on signal processing, strain gauge measurements, optical methods - photoelasticimetry and non-destructive methods (NDT) - ultrasonic testing, acoustic emission testing, dye penetrant inspection and magnetic particle testing.


The course schedule:

Lecture 1 – Introduction to the subject
Practical session 1 - Introduction to linear algebra

Lecture 2 – Orthogonal transformation, projection
Practical session 2 - Introduction to MATLAB software

Lecture 3 – Basics of vector calculus, scalar and vector field
Practical session 3 - Introduction to MATLAB software (II), practical examples

Lecture 4 – Eigenvalue problem
Practical session 4 - Practical examples with MATLAB software

Lecture 5 – Discrete Fourier transform
Practical session 5 - Discrete Fourier transform - practical examples (Matlab software)

Lecture 6 – Basics of signal processing
Practical session 6 - practical examples using Matlab software

Lecture 7 – Strain gauges - theory
Practical session 7 - Static and dynamic measurements using strain gauges

Lecture 8 – Optical methods - Photoelasticimetry
Practical session 8 - Measurement of optical sensitivity constant using two different approaches

Lecture 9 – Dye penetrant and magnetic particle testing methods
Practical session 9 - Practical measurements

Lecture 10 – Ultrasonic testing - theory
Practical session 10 - Identification of material parameters using ultrasonic testing

Lecture 11 – Acoustic emission testing I - theory
Practical session 11 - Practical measurements - linear localization, attenuation curve

Lecture 12 – Acoustic emission testing II - theory
Practical session 12 - Practical measurements - planar localization

Lecture 13+Practical session 13 – Excursion

P14+C14 – Written test
Recommended or Required Reading
Required Reading:
[1] Hoffmann, K.: An Introduction to Measurements using Strain Gauges, Hottinger Baldwin Messtechnik GmbH, Darmstadt, dostupný také z: http://www.kk-group.ru/help/Strain_Gauge_Measurements_Book_2012_01.pdf
[1] Macura,P.: Experimentální metody v pružnosti a plasticitě,VŠB-TU Ostrava 2001
[2] Hoffmann, K.: An Introduction to Measurements using Strain Gages, Hottinger Baldwin Messtechnik GmbH, Darmstadt, dostupný také z: http://www.kk-group.ru/help/Strain_Gauge_Measurements_Book_2012_01.pdf
Recommended Reading:
[1] Stefänescu, D.: Handbook of force transducers: principles and components, Berlin: Springer, 2011
[1] Janíček,P.: Technický experiment, VUT Brno,1989
[2] Milbauer,M., Perla,M.: Fotoelasticimetrické přístroje a měřící metody, Praha: ČSAV, 1959
[3] Trebuňa, F., Šimčák, F.: Príručka experimentálnej mechaniky, TU Košice, 2007, 1536s
[4] Vlk, M, a kol.: Experimentální mechanika, Brno, 2003, 147s
[5] Stefänescu, D.: Handbook of force transducers: principles and components, Springer, Německo, 2011, 612s
[6] Klement, J., Plánička, F., Vlk, M.: Modelová podobnost, elektrická odporová tenzometrie, experimentální určování zbytkových napětí, vyhodnocení experimentálně získaných dat, Plzeň, Západočeská univerzita, 2004, 130s
[7] Němec, J.: Odporové tenzometry v praxi, SNTL, Praha, 1967, 174s
Planned learning activities and teaching methods
Lectures, Tutorials, Experimental work in labs
Assesment methods and criteria
Task TitleTask TypeMaximum Number of Points
(Act. for Subtasks)
Minimum Number of Points for Task Passing
Graded creditGraded credit100 51