Course Unit Code | 636-2015/01 |
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Number of ECTS Credits Allocated | 4 ECTS credits |
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Type of Course Unit * | Choice-compulsory type A |
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Level of Course Unit * | First Cycle |
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Year of Study * | Third Year |
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Semester when the Course Unit is delivered | Winter Semester |
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Mode of Delivery | Face-to-face |
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Language of Instruction | Czech |
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Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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Name of Lecturer(s) | Personal ID | Name |
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| LAS40 | doc. Ing. Stanislav Lasek, Ph.D. |
| STR50 | prof. Ing. Bohumír Strnadel, DrSc. |
Summary |
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Basic mechanical tests of engineering materials in relationship with the action of various degradation processes. Principal kinds of engineering materials failure. Testing of mechanical overloading in the case of ductile fracture. Principles and testing of resistance to fatigue failure, creep, corrosion, stress corrosion cracking and to basic mechanisms of wear of functional surfaces. Methods of evaluation of experimental results and their interpretation. |
Learning Outcomes of the Course Unit |
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Student will be able:
- to characterize principal methods of materials testing to evaluate materials properties;
- to describe the most important mechanisms of material degradation;
- to choose appropriate methods to evaluate resistance of materials to degradation processes.
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Course Contents |
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1. Importance of material testing. Tensile test, evaluation of principal characteristics; hardness testing.
2. Methods of toughness evaluation. Definition of toughness; influence of loading rate; influence of stress concentration; notch toughness test; temperature dependence of toughness, relation to the structure.
3. Material degradation during service. Principles of degradation, high/low energy fractures. Mechanism of ductile fracture, mechanisms of brittle fracture.
4. Fracture mechanics. Basic principles, elastic solution – Griffith’s relation; elastic-plastic solution – Griffith-Orowan’s relation; stress intensity factor; fracture toughness.
5. Fatigue of materials. Cyclic stress and strain; initiation and growth of fatigue cracks; life curves; factors influencing resistance to fatigue; methods of evaluation of resistance to fatigue damage.
6. Corrosion degradation of materials. Electrochemical corrosion; anodic/catodic reactions; Pourbaix’s diagrams; Faraday’s law, corrosion rate; passivity of metals; local corrosion; methods of evaluation of materials resistance to corrosion.
7. Creep degradation of materials. Influence of stress and temperature; the most important creep mechanisms; Larson-Miller parameter; methods of evaluation and extrapolation of experimental data.
8. Wear of materials. Adhesive, abrasive, erosive wear; main parameters; materials testing.
9. Radiation degradation of materials. Radiation strengthening/embrittlement; photo degradation of polymers.
10. Non-destructive material testing.
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Recommended or Required Reading |
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Required Reading: |
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[1] CALLISTER D. W., Materials Science and Engineering. An Introduction. University Iowa, John Wiley Sons, 2007,721. |
[1] STRNADEL, B. Nauka o mateiálu II. Degradační procesy a design konstrukčních materialů. ES VŠB-TU Ostrava, 2008, 280 s.
[2] KOUTSKÝ J., Degradační procesy a predikce životnosti. ZU Plzeň (skripta), 1995, 167 s.
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Recommended Reading: |
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[1] FELBECK, D. K., ATKINS A.G.: Strength and Fracture of Engineering Materials. Prentice Hall, Englewood, 1984, 542 s. |
[1] POKLUDA J. aj. Mechanické vlastnosti a struktura pevných látek. PC-DIR, Brno, 1994, 385 s.
[2] HERNAS A. a kol., Žárupevné oceli a slitiny. VŠB-TU Ostrava, 2009, 389 s.
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Planned learning activities and teaching methods |
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Lectures, Seminars, Tutorials, Experimental work in labs |
Assesment methods and criteria |
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Task Title | Task Type | Maximum Number of Points (Act. for Subtasks) | Minimum Number of Points for Task Passing |
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Credit and Examination | Credit and Examination | 100 (100) | 51 |
Credit | Credit | 30 | 15 |
Examination | Examination | 70 | 36 |