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Ukončeno v akademickém roce 2015/2016

Damage Processes of Materials

Type of study Follow-up Master
Language of instruction Czech
Code 636-0803/01
Abbreviation DPM
Course title Damage Processes of Materials
Credits 6
Coordinating department Department of Material Engineering
Course coordinator prof. Ing. Bohumír Strnadel, DrSc.

Osnova předmětu

Lectures:

1. Introductory lecture
2. Changes of structural materials induced degradation process
3. Basic groups of materials and their degradation processes
4. Refraction of congestion during uniaxial and multiaxial stress
5. Terms of brittle fracture of low-energy
6. Conditions of high-energy ductile fracture
7. Mechanisms of initiation and spread of fatigue violation
8. Fatigue damage components when exposed to multiaxial stress
9. Mechanisms of creep damage initiation
10. Fracture during the creep and factors that influence it
11. Mechanisms of stress corrosion cracking and hydrogen embrittlement
12. The basic mechanisms of wear surfaces
13. Combined effects of some degradation processes
14. Consequences effects of degradation processes in the reliability
of components

Exercise:

1. Introductory training, requirements, a summary study of literature,
summary of the basic knowledge of physics of metals, continuum mechanics
and physics metallurgy required for mastering the subject.
2. Classification of the effects of degradation processes, a general assessment
of reduction expected life of components when exposed to degradation
processes, examples of reliability evaluation of components.
3. Comparison of the effects of exposure degradation processes in different
groups construction materials in terms of loss of basic functions and material
reduction of reliability in practical examples.
4. Worked examples of the limit state quarry material breach Overload
in uniaxial and multiaxial stress.
5. Calculations transit temperatures and lower limits of temperature
dependence of fracture toughness for the quantification of safety components
against the formation of low-energy fracture.
6. Calculations of strength of structural materials at elevated temperatures and
optimization of microstructural parameters.
7. Solution of basic technical tasks during the life of components
time-varying loads and estimates of residual life.
8. Calculations of the components loaded multi-axis time variable stress-
deformation field.
9. Solving basic technical problems of safety and durability of steel structures
exposed at elevated temperatures.
10. Solving some problems of functional wear surfaces, particularly adhesion, for
selected timing mechanisms volumetric wear. Optimization of pressure
strength and relative speed of functional surfaces.
11. Calculations of heavy-duty components or two or more degradation
processes at the same time, the combined effects of elevated temperature
exposure and cyclic stress on the safety components.
12. Solving some technical problems of reliability of structural materials
when exposed to degradation processes associated with optimizing
microstructure parameters.
13. Test.
14. Checking test results, credit.

Povinná literatura

1. Askeland, D.R.: The Science and Engineering of Materials, PWS Publishing Company, Boston 1994.
2. Felbeck, D.K. and Atkins, A.G.: Strength and Fracture of Engineering Materials, Prentice Hall, NJ, 1984.
3. Ellyin, F.: Fatigue Damage, Crack Growth and Life Prediction, Champan and Hall, London 1997.

Doporučená literatura

Anderson, T.L.: Fracture Mechanics, CRC Press, New York 1995.