Course detail
Experimental Methods
FSI-HE1-KAcad. year: 2024/2025
The course deals with the basic methods of measuring and evaluating the side-effects of machining and metal-forming. They include mechanical testing, qualitative and quantitative evaluation of wear, measuring of cutting forces and resistance, metal-forming and ejecting forces, resistance to plastic strain, strain rates, temperature & heat, and oscillation. The evaluation is dealt with the viewpoint of individual methods of machining and metal-forming and the operating conditions of the tool. Applications of the methods of light and electron microscopy when evaluating the morphology of the surface of tools and workpieces are discussed too.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Entry knowledge
Rules for evaluation and completion of the course
- Attendance in lectures is recommended. Attendance in exercises is compulsory. Attendance at lessons is required and checked by the tutor. One absence can be compensated by attending a seminar with another group, or by elaboration of substitute tasks. Longer absence is may be compensated for via special tasks by the agreement with the tutor.
The attendance to the seminar is regularly checked and the participation in the lesson is recorded.
Aims
Students will be able to creatively participate in performing and evaluating of required experiments in the technological processes of machining and metal-forming. They will be able to recognize proper measuring methods and equipment with automated outputs and evaluation by the help of computer technique.
Study aids
Prerequisites and corequisites
Basic literature
Group of authors: Metals Handbook, Volume 8, Mechanical Testing, ASM 1985.
MEYERS, M. A.: Dynamic Behaviour of Materials. A Wiley-Interscience Publication, John Wiley & Soins,Inc. New York, Toronto,1994. p 668. ISBN 0-471-58262-X. (EN)
VELES, P. Mechanické vlastnosti a skúšanie kovov. Edícia hutníckej literatúry, ALFA Bratislava, SNTL Praha, 1985.401 s. 63-559-85.
Recommended reading
Forejt., M., Humár, A., Píška, M., Janíček, L.: Experimentální metody. [online]. Studijní opory pro magisterský studijní program 23-01-T Strojní inženýrství, obor strojírenská technologie - obrábění - tváření, svařování - management, VUT v Brně, Fakulta strojního inženýrství, 2003. Dostupné na World Wide Web: http://www.fme.vutbr.cz/opory/pdf/ust/Exp.metod/Experimentalni%20metody%20he2.pdf
Medek, J.: Experimentální metody. VUT Brno, 1993.
MELOUN, M., MILITKÝ, J. Statistické zpracování experimentálních dat. PLUS s.r.o. Praha, 1994. 839 s. ISBN 80-85297-56-6.
Classification of course in study plans
Type of course unit
Guided consultation in combined form of studies
Teacher / Lecturer
Syllabus
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Oscillation (principles, experimental devices, sensors, signal processing instruments)
-
Cutting forces and resistances (dynamometers, measurement and evaluation of parameters, data processing)
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Tool wear (criteria, measuring methods and equipment, processing of measured values), comprehensive assessment of cutting tool properties
-
Microscopic methods (analysis of the surface morphology of the tool and workpiece using scanning electron microscopy - SEM)
-
Heat and temperature, measurement of high-speed processes (measurement methods, sensing instruments, data processing)
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Demonstration of practical application of experimental methods in industrial practice
-
Experimental technological tests of bulk formability
-
Tests for determining friction coefficients and the influence of lubricants in forming
-
Experimental determination of material mechanical properties under dynamic loading conditions
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Demonstration of practical application of experimental methods in industrial practice
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Measurement of forming forces, determination of stress at higher strain rates
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Determination of forming resistances at higher strain rates
-
Experimental validation of dynamic processes using numerical simulation
Laboratory exercise
Teacher / Lecturer
Syllabus
1.Measuring the tool wear in the course of operation, data evaluation
2.Establishing the tool life/cutting speed dependence from the wear values
3.Analysis of cutting properties of drills
4.Analysis of cutting properties of milling cutters
5.Establishing the torque when cutting the thread with a nut tap
6.Analysis of energetic and thermal phenomena in grinding
7.Analysis of properties of processing liquids
8.Complex upsetting test, evaluation of the resistance to deformation, deformation work, and rate of deformation
9.Establishing the wear coefficient during the metal-forming process
10.Evaluation of strain by the macro-network method
11.Establishing the impact forces and stress in the Taylor test
12.Conducting the Taylor test on an air gun and evaluating the test
13.Establishing the dynamic-mechanical properties of materials by the method of Hopkinson bar test
Guided consultation
Teacher / Lecturer
Syllabus
-
Oscillation (principles, experimental devices, sensors, signal processing instruments)
-
Cutting forces and resistances (dynamometers, measurement and evaluation of parameters, data processing)
-
Tool wear (criteria, measuring methods and equipment, processing of measured values), comprehensive assessment of cutting tool properties
-
Microscopic methods (analysis of the surface morphology of the tool and workpiece using scanning electron microscopy - SEM)
-
Heat and temperature, measurement of high-speed processes (measurement methods, sensing instruments, data processing)
-
Demonstration of practical application of experimental methods in industrial practice
-
Experimental technological tests of bulk formability
-
Tests for determining friction coefficients and the influence of lubricants in forming
-
Experimental determination of material mechanical properties under dynamic loading conditions
-
Demonstration of practical application of experimental methods in industrial practice
-
Measurement of forming forces, determination of stress at higher strain rates
-
Determination of forming resistances at higher strain rates
-
Experimental validation of dynamic processes using numerical simulation