653-2006/02 – Materials Testing and Defectoscopy (ZMaDn)
| Gurantor department | Department of Materials Engineering and Recycling | Credits | 4 |
| Subject guarantor | doc. Ing. Petr Jonšta, Ph.D. | Subject version guarantor | doc. Ing. Petr Jonšta, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 2 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- Define basic classification of mechanical properties and testing methods.
- Describe basic mechanical tests and their interpretation.
- Explain basic relations among mechanical properties of metallic structural materials, their structure and processing methods.
- Define nonconventional tests of mechanical properties: fracture toughness, fatigue, creep, relaxation tests.
- Explain the principles of basic defectoscopic methods and their exploitation in materials engineering.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
The course is dealing with basic mechanical properties, like elasticity, strength, plasticity and toughness. Their relationships to structure and processing of materials, especially metals, are discussed. The attention is also paid to another important properties, for e.g. resistance to cyclic loading and heat resistance. Students are informed about basic testing methods in accordance with the appropriate standards, in areas of both destructive and nondestructive testing.
Compulsory literature:
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
Continuous verification of learning outcomes:
full-time study form - 2 written tests, 3 written programs during semester;
combined study form - 1 semestral project.
Final verification of study results:
written exam.
E-learning
Other requirements
There are no further special requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Basic terms - quality, property. Classification of properties and testing methods.
2. Summary of crystallography terms, Miller indexes, defects of lattice.
3. Elasticity. Definition of stress, strain, state of stress (tenzors of stress and strain), Hook´s law, energy of elastic deformation, isotropic body.
4.-5. Basics of dislocation theory. Definition, classification of dislocations according to the Burger´s vector size and its orientation towards the dislocation line. Stress field, energy of dislocations, mobility of dislocations, Frank-Read source. Plastic deformation from the point of view of dislocation theory.
6. Tensile test. Definition and evaluation of yield point and ultimate strength, ductility and contraction. Uniform and non-uniform deformation, conventional diagram of tensile test, diagram of true stress-true strain. Additional basic static tests.
7. Hardness tests. Definition of hardness, overview and principles of individual tests.
8.-9. Mechanical properties of structural materials in real conditions of loading, limiting states. Materials properties at low temperatures and at higher strain rates, tests of specimens with notches or cracks. Evaluation of resistance against brittle fracture - impact bending test, Vidal´s curve, evaluation of the transition temperature. Basics of fracture mechanics, overview of testing methods, evaluation of fracture toughness.
10. Materials properties at repeated cyclic loading - fatigue. Testing methods, S-N curve, Smith´s diagram.
11. Materials properties at elevated temperatures. Creep and relaxation tests.
12.-13. Overview of technological tests. Defectoscopy, classification and principles of testing methods, applications in practice.
14. Summary, case studies.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction