636-3004/01 – Damage Processes of Materials (DPMn)

Gurantor departmentDepartment of Material EngineeringCredits7
Subject guarantorprof. Ing. Bohumír Strnadel, DrSc.Subject version guarantorprof. Ing. Bohumír Strnadel, DrSc.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year1Semestersummer
Study languageCzech
Year of introduction2014/2015Year of cancellation
Intended for the facultiesHGF, USP, FEI, FMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
LAS40 doc. Ing. Stanislav Lasek, Ph.D.
STR50 prof. Ing. Bohumír Strnadel, DrSc.
BET37 Ing. Petra Váňová, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 3+3
Combined Credit and Examination 18+0

Subject aims expressed by acquired skills and competences

- Identify degradation processes and their causes - Specify the basic laws that control the degradation processes - Ability to calculate the lifetime of components - Establish a critical size for the selected types of defects in materials and methods of stress - Set a limit for the characteristics of stress conditions

Teaching methods

Lectures
Tutorials

Summary

The lecture introduces students to basic methods of evaluation of degradation processes in structural materials. Analyses of microstructural conditions of brittle and ductile fracture initiation, fatigue damage, creep, corrosion damage, corrosion cracking and principle mechanismus of wear of service surfaces are presented. These analyses are followed by comments of effects of temperature, loading mode and environmental parameters on limited state finished by fracture and loss of general function of material consist in bearing stress-strain field. The whole lecture of initiation and propagation mechanisms of degradation processes is aimed on solution of technical problems how to improve reliability and safety of structural parts.

Compulsory literature:

STRNADEL, B. Degrading processes of materials. Ostrava: VŠB-TU Ostrava, 2015. Available from: http://katedry.fmmi.vsb.cz/Opory_FMMI_ENG/AEM/Damage%20Processes%20of%20Materials.pdf ASKELAND, D.R. The Science and Engineering of Materials, New York: Springer US, 1996. ISBN 978-1-4899-2895-5. FELBECK, D.K. and A.G. ATKINS. Strength and fracture of engineering solids. Prentice Hall, Englewood Cliffs: Prentice-Hall, Inc., 1984. ISBN 0-13-851709-6. ELLYIN, F. Fatigue Damage, crack growth and life predicttion, 1st ed. London: Champan and Hall, 1997. ISBN-13: 978-94-010-7175-8. ČADEK, J. Creep in metallic materials, 2nd ed. Michigan: Elsevier, 1988. ISBN 9780444416858.

Recommended literature:

ANDERSON, T.L. Fracture Mechanics, Fundamentals and Applications, 4th ed. New York: CRC Press, 2017. ISBN-13: 978-1-4987-2813-3.

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

There are no further special requirements.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

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.

Conditions for subject completion

Full-time form (validity from: 2014/2015 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 30  15
        Examination Examination 70  36
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan
2019/2020 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2019/2020 (N3923) Materials Engineering (3901T077) Biomechanical Engineering P Czech Ostrava 1 Compulsory study plan
2019/2020 (N0533A110006) Applied Physics P Czech Ostrava 1 Choice-compulsory type B study plan
2018/2019 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2018/2019 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan
2018/2019 (N3923) Materials Engineering (3901T077) Biomechanical Engineering P Czech Ostrava 1 Compulsory study plan
2018/2019 (N1701) Physics (1702T001) Applied Physics P Czech Ostrava 1 Choice-compulsory study plan
2017/2018 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2017/2018 (N3923) Materials Engineering (3901T077) Biomechanical Engineering P Czech Ostrava 1 Compulsory study plan
2017/2018 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan
2017/2018 (N1701) Physics (1702T001) Applied Physics P Czech Ostrava 1 Choice-compulsory study plan
2016/2017 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2016/2017 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan
2016/2017 (N1701) Physics (1702T001) Applied physics P Czech Ostrava 1 Choice-compulsory study plan
2016/2017 (N3923) Materials Engineering (3901T077) Biomechanical Engineering P Czech Ostrava 1 Compulsory study plan
2016/2017 (N1701) Physics (1702T001) Applied Physics P Czech Ostrava 1 Choice-compulsory study plan
2015/2016 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2015/2016 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan
2014/2015 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials P Czech Ostrava 1 Compulsory study plan
2014/2015 (N3923) Materials Engineering (3911T036) Advanced Engineering Materials K Czech Ostrava 1 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner
FMMI 2017/2018 Full-time English Compulsory 601 - Study Office stu. block
FMMI 2016/2017 Full-time English Compulsory 601 - Study Office stu. block
FMMI 2015/2016 Full-time English Compulsory 601 - Study Office stu. block
FMMI_N 2014/2015 Full-time Czech Compulsory 601 - Study Office stu. block