Course detail

Experimental Methods

FSI-HE1 Acad. year: 2024/2025 Winter semester

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.

Supervisor

Ing. Miroslav Jopek, Ph.D.

Department

Institute of Manufacturing Technology

Learning outcomes of the course unit

Prerequisites

Planned learning activities and teaching methods

Assesment methods and criteria linked to learning outcomes

Language of instruction

Czech

Aims

Specification of controlled education, way of implementation and compensation for absences

The study programmes with the given course

Programme C-AKR-P: , Lifelong learning
branch CZS: , 5 credits, elective

Programme N-STG-P: Manufacturing Technology, Master's
branch STG: Manufacturing Technology, 5 credits, compulsory

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Ing. Zdeněk Fiala, Ph.D.
prof. Ing. Milan Forejt, CSc.
Ing. Miroslav Jopek, Ph.D.

Syllabus



  1. Oscillation (principles, experimental devices, sensors, signal processing instruments)




  2. Cutting forces and resistances (dynamometers, measurement and evaluation of parameters, data processing)




  3. Tool wear (criteria, measuring methods and equipment, processing of measured values), comprehensive assessment of cutting tool properties




  4. Microscopic methods (analysis of the surface morphology of the tool and workpiece using scanning electron microscopy – SEM)




  5. Heat and temperature, measurement of high-speed processes (measurement methods, sensing instruments, data processing)




  6. Demonstration of practical application of experimental methods in industrial practice




  7. Experimental technological tests of bulk formability




  8. Tests for determining friction coefficients and the influence of lubricants in forming




  9. Experimental determination of material mechanical properties under dynamic loading conditions




  10. Demonstration of practical application of experimental methods in industrial practice




  11. Measurement of forming forces, determination of stress at higher strain rates




  12. Determination of forming resistances at higher strain rates




  13. Experimental validation of dynamic processes using numerical simulation



Laboratory exercise

26 hours, compulsory

Teacher / Lecturer

Ing. Zdeněk Fiala, Ph.D.
Ing. Matej Gajdošík
Ing. Miroslav Jopek, Ph.D.
Ing. Petr Svoboda

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