339-0315/03 – Fatigue of material (UM)
| Gurantor department | Department of Mechanics of Materials | Credits | 4 |
| Subject guarantor | prof. Ing. Jan Fuxa, CSc. | Subject version guarantor | prof. Ing. Jan Fuxa, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 3 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2010/2011 | Year of cancellation | 2014/2015 |
| Intended for the faculties | FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
The students will be acquainted with the basis of Linear Elastic FractureMechanics. The great attention is devoted too the problems of High-Cycle Fatigue .
Teaching methods
Lectures
Tutorials
Summary
1. Types of material failure. Constructional and structural notches.
2. Notches and stress concentration. Stress concentration factor, stress gradient.
3. Linear elastic stress analysis of cracks.
4. Modes of fracture. Stress intensity factor.
5. Brittle fracture. Mechanical properties of materials.
6. Linear elastic fracture mechanics. Griffith, s criterium. Sih,s criterium.
7. Fatigue failure. Wohler diagram.
8. S-N curves. The factors effects of Fatigue Limit.
9. Mean stress effects. Amplitude-mean diagrams.
10. Effects of notches. Notches factors.
11. Multiaxial Fatigue.
12. Safety factors with multiaxial fatigue.
13. Prediction approach of high cyclic fatigue lifetime. Fatigue moduls (summary).
14. Temperature fatigue.
Compulsory literature:
DOWLING,E.N. Mechanical Behavior of Materials. Prentice –Hall,INC. New jersey 1993. ISBN 0-11-026956-5.
Recommended literature:
ZEMÁNKOVÁ,J. Technická mechanika I. Úvod do lomové mechaniky. 1. vyd. Praha:ČVUT, 1981.123 s.
Way of continuous check of knowledge in the course of semester
Test, example solutions
E-learning
no
Other requirements
Studenti vypracují program dle zadaných parametrů.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1 Types of material failure. Constructional and structural notches.
2. Notches and stress concentration. Stress concentration factor, stress gradient.
3. Linear elastic stress analysis of cracks.
4. Modes of fracture. Stress intensity factor.
5. Brittle fracture. Mechanical properties of materials.
6. Linear elastic fracture mechanics. Griffith, s criterium. Sih,s criterium.
7. Fatigue failure. Wohler diagram.
8. S-N curves. The factors effects of Fatigue Limit.
9. Mean stress effects. Amplitude-mean diagrams.
10. Effects of notches. Notches factors.
11. Multiaxial Fatigue.
12. Safety factors with multiaxial fatigue.
13. Prediction approach of high cyclic fatigue lifetime. Fatigue moduls (summary).
14. Temperature fatigue.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction