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Basics of damage processes

Type of study Bachelor
Language of instruction Czech
Code 653-2208/02
Abbreviation ZDPn
Course title Basics of damage processes
Credits 5
Coordinating department Department of Materials Engineering and Recycling
Course coordinator prof. Ing. Bohumír Strnadel, DrSc.

Subject syllabus

1. Introductory lecture. Manufacturing and service degradation. Limit States of Materials. Damage of major material groups.
2. Production degradation, metallurgy, chemical and structural heterogeneity, impurities segregation. Degradation of welded joints.
3. Stress and strain. Ductile, high-energy fractures, damage during plastic deformation, breach of overload.
4. Brittle fractures, fracture mechanics principles, low-energy fractures, influences of composition and structure of the material.
5. Fatigue process, cyclic stresses. Initiation and propagation of cracks, life curves (SN). Methods for testing.
6. Factors affecting the fatigue life, notches, surface conditions and environment. Life prediction, the solution of selected problems.
7. Fundamentals of creep (creep) materials. Effects of stress and temperature. Main mechanisms of creep.
8. Methods of testing and extrapolation of data creep. Larson-Miler parameter estimates lifetime, creep resistant alloys
9. Introduction to electrochemical corrosion, anodic and cathodic reactions, E-pH diagrams, Faraday's law, the rate of corrosion, passivity of metals, local types of corrosion,
10. Oxidation at high temperatures in gases, the effect of hydrogen, methods of protection against corrosion, heat-resistant steels and alloys. Stress corrosion cracking and hydrogen embrittlement.
11. Basics of wear surfaces, adhesive, abrasive and erosive wear, the main parameters, the possibility of testing
12. Surface damage during cavitation, contact fatigue and wear corrosion (fretting). Main factors and ways of protection.
13. Radiation damage, interaction of radiation with material, radiation hardening and embrittlement of materials. The photo-degradation of polymers.
14. Combined effects of certain degradation processes. Introduction to the analysis of damage. Examples from practice. Monitoring.

Literature

CALLISTER, W. D. Materials Science and Engineering. An Introduction. 7th. ed. Iowa: University Iowa, John Wiley-Sons, 2007. ISBN 978-0-471-73696-7.
MORAVČÍK, R. and M. HAZLINGER. Degradation Processes and Life-time Prediction. Plzeň: Aleš Čeněk s.r.o., 2017. ISBN 978-80-7380-670-5 .

Advised literature

FELBECK, D. K. and A. G. ATKINS. Strength and Fracture of Engineering Materials. 1st. ed. Englewood: Prentice Hall, 1984. ISBN 0-13-851709-6.