653-3004/03 – Damage Processes of Materials (DPMn)
| Gurantor department | Department of Materials Engineering and Recycling | Credits | 6 |
| Subject guarantor | prof. Ing. Bohumír Strnadel, DrSc. | Subject version guarantor | prof. Ing. Bohumír Strnadel, DrSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | HGF, FEI, USP, FMT | Intended for study types | Follow-up Master |
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:
.
LEE, Y. L., PAN, J., HATHAWAY, R., BARKEY, M.: Fatigue Testing and Analysis, Butterworth-Heinemann, 3rd edition, 2014, 416p.
LAMON, J.: Brittle Fracture and Damage of Brittle Materials and Composites, ISTE Press – Elsevier, 2016, 296p.
SUN, C.T., JIN, Z.: Fracture Mechanics, Academic Press, 1st edition, 2017, 296p.
STRNADEL, B. Řešené příklady a technické úlohy z materiálového inženýrství, Ostrava: Ostravské tiskárny, 1998.
Recommended literature:
ANDERSON, T.L. Fracture Mechanics, Fundamentals and Applications, 4th ed. New York: CRC Press, 2017. ISBN-13: 978-1-4987-2813-3.
Additional study materials
Way of continuous check of knowledge in the course of semester
Continuous verification of learning outcomes:
full-time study form – 2 x written tests at exercises, 2 x discussion seminar at lectures during the semester;
combined study form – 1 x test during the semester.
Final verification of study results:
written and oral exam - the aspirant draw up a report.
E-learning
Other requirements
There are no further requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
- Introductory lecture
- Changes of structural materials induced degradation process
- Basic groups of materials and their degradation processes
- Refraction of congestion during uniaxial and multiaxial stress
- Terms of brittle fracture of low-energy, linear fracture mechanics
- Conditions of high-energy ductile fracture, elasto-plastic fracture mechanics
- Mechanisms of initiation and spread of fatigue violation
- Fatigue damage components when exposed to multiaxial stress
- Fracture during the creep and factors that influence it
- Mechanisms of stress corrosion cracking and hydrogen embrittlement
- The basic mechanisms of wear surfaces
- Consequences of degradation processes in the reliability of structures
- Basic procedures of optimized design of structural material
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction