636-0924/02 – Degradation Processes of Structural Materials (DPKM)

Gurantor departmentDepartment of Material EngineeringCredits10
Subject guarantorprof. Ing. Bohumír Strnadel, DrSc.Subject version guarantorprof. Ing. Bohumír Strnadel, DrSc.
Study levelpostgraduateRequirementChoice-compulsory
YearSemesterwinter + summer
Study languageCzech
Year of introduction2011/2012Year of cancellation
Intended for the facultiesFMTIntended for study typesDoctoral
Instruction secured by
LoginNameTuitorTeacher giving lectures
STR50 prof. Ing. Bohumír Strnadel, DrSc.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Examination 2+0
Combined Examination 28+0

Subject aims expressed by acquired skills and competences

Identify degradation processes and their causes Specify the basic laws that control the degradation processes Select t the suitable material with high resistivity of degradation process Ability to calculate the lifetime of components Establish a critical crack size for the selected types of materials and loading Set a limit for the characteristics of stress conditions

Teaching methods

Lectures
Individual consultations

Summary

The lecture presents methods of evaluating degradation processes in structural materials. Attention is focused primarily on the analysis of microstructural conditions for the initiation of brittle and ductile fracture, fatigue damage, creep, corrosion damage, stress corrosion cracking, and basic mechanisms of wear on functional surfaces. This analysis is followed by an explanation of the influence of temperature, loading mode and environmental parameters on the initiation of limit states - leading to fracture and the loss of the basic material function, i.e. transfer of the stress-strain field. Methods for evaluating these degradation processes are applied to metals, ceramic materials, polymers and basic types of composite materials. Particular attention is focused on the influence of the size and shape of structural components on the initiation of limit states and methods for assessing the resistance of structural components exposed to the negative effects of degradation processes. The lecture concludes with a presentation of methods for risk estimation of structures – both during the design stage and as part of operational decision-making during service life.

Compulsory literature:

T.L. ANDERSON: Fracture Mechanics, Fundamentals and Applications, CRC Press, NY 1995, 688 s. F. ELLYIN: Fatigue Damage, crack growth and life predicttion, Champan and Hall, London 1997, 469s.

Recommended literature:

J. ČADEK: Creep in metallic materials, Academia Praha 1988, 376 s.

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:

1. Introduction – basic relations between structure and mechanical properties 2. Changes of structural materials induced by degradation process 3. Basic groups of materials and their degradation processes 4. Fracture by overloading during uniaxial and multiaxial stress 5. Terms of low-energy brittle fracture 6. Conditions of high-energy ductile fracture 7. Mechanisms of initiation and spread of fatigue violation 8. Fatigue damage of components 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 on surfaces 13. Combined effects of some degradation processes 14. Consequences effects of degradation processes in the reliability of components

Conditions for subject completion

Full-time form (validity from: 2011/2012 Winter semester, validity until: 2012/2013 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Examination Examination  
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2019/2020 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2018/2019 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2018/2019 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2017/2018 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2017/2018 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2016/2017 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2016/2017 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2015/2016 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2015/2016 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2014/2015 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2014/2015 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2013/2014 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2013/2014 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2012/2013 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2012/2013 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan
2011/2012 (P3924) Materials Science and Engineering P Czech Ostrava Choice-compulsory study plan
2011/2012 (P3924) Materials Science and Engineering K Czech Ostrava Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner