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Ternopil Ivan Puluj National Technical University
Факультет інженерії машин, споруд та технологій
Кафедра будівельної механіки
Fracture Mechanics
syllabus
| Major | 192 - Будівництво та цивільна інженерія (бакалавр) |
| Field of knowledge | 19 Архітектура та будівництво |
| Academic degree | bachelor's |
Course
| Course type | elective special education |
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| Study start course | 4 | ||||
| Semesters | From 7 — to 8 | ||||
| Form of education | full-time | ||||
| Study hours structure |
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| Amount of hours for individual work | 72 | ||||
| ECTS credits | 4 | ||||
| Form of final examination | credit |
Lecturer
| Academic degree | PhD |
| Academic title | Assoc. Prof. |
| Full name | Volodymyr Iasnii |
Course goals and learning objectives
| Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture. In modern materials science, FM is an important tool used to improve the performance of mechanical components. |
Course description
| Lectures | Topic 1. Introduction to FM. Review of tension test and torsion. Method of handling combined stresses, principal stresses. Definition of failure, yield criteria, buckling as a failure mode. Need for fatigue test and focus on what data being collected. Topic 2. Stress-Strain Diagrams, Material Properties. Tension test and stress-strain diagram, Internal properties and Hooke’s law, 0.2% offset yield stress and strain hardening, Poisson’s ratio. Topic 3. Spectacular Failures. Further details on Fatigue test, review on conventional design methodologies. List of spectacular failures. Common applications of fracture prevention. Topic 4. Linear elastic fracture mechanics and elastic-plastic fracture mechanics. Contributions of Inglis, Griffith and Irwin. Extremum cases of an elliptical hole, Various results of fracture in glass, Classification of LEFM and EPFM - based on plastic deformation, materials and applications. Modes of Loading - Mode-I, Mode-II and Mode-III. Topic 5. Importance of Fracture Mechanics. Test for fracture mechanics, Crack-growth curves, Residual strength diagram, Summary of fracture parameters. Practical examples of fracture. Topic 6. Fatigue Crack Growth Model. Crack growth and fracture mechanisms. Shear-lip in necking. Fatigue crack growth model. Striations and Beachmarks. Topic 7. Crack Growth and Fracture Mechanisms. Clarifications on fatigue crack growth model. Stress corrosion cracking (SCC) - Active path dissolution, Hydrogen embrittlement, Film induced cleavage. Creep, Corrosion fatigue, Liquid metal embrittlement. Topic 8. Elastic Strain Energy. Surface energy, Elastic strain energy stored in terms of stress components, in terms of axial, torsion and bending loads for slender members. Strain energy change in the presence of a crack under constant loading and constant displacement. |
| Laboratory classes | 1.Method of handling combined stresses 2. Stress-Strain Diagrams, Material Properties 3. Fatigue test, review on conventional design methodologies 4. Extremum cases of an elliptical hole 5. Crack-growth curves 6. Crack growth and fracture mechanisms 7. Fatigue crack growth model 8. Elastic strain energy approaches |
Course author
| PhD, Assoc. Prof. Volodymyr Iasnii |
Дата останнього оновлення: 2020-11-29 22:58:42
