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Instructors: Dr. Ismail Caylak; Prof. Dr. Rolf Mahnken
Event type:
Lecture
Org-unit: Maschinenbau
Displayed in timetable as:
BM
Hours per week:
2
Language of instruction:
German
Min. | Max. participants:
- | -
Requirements and recommendations:
Basic knowledge in mechanics and mathematics
Aim of the event:
The lecture is concerned with the assessment of the mechanical integrity of components and structures, in which flaws and cracks are present.
In these cases classical failure criterions from the discipline of strength of materials cannot be used and therefore fracture mechanics concepts must be applied. In the lecture basic concepts of this discipline are introduced which enable for investigation of cracked structures occuring in real engineering practice.
Target group:
Students in mechanical engineering, industrial engineering, techno mathematics,
physics and informatics
Contents:
Linear Elastic Fracture Mechanics
- Stress intensity factors,
- energy balance
- fracture criteria of Griffith and Irwin´s formulae,
- J-integral,
- criteria for a crack extension
- mixed-mode problems
Elasto Plastic Fracture Mechanics
- J-integral
- crack propagation
Cyclic crack propagation
- Paris law
- Modifications of Paris law
- Crack closure effects
Contact person:
Prof. Mahnken
Literature:
D. Gross: Bruchmechanik ,Springer 1996
M.F. Kanninen, C.H. Popelar: Advanced Fracture Mechanics, Oxford Univ. Press 1985
L.B. Freund: Dynamic Fracture Mechanics Cambridge Univ. Press 1990
Supplementary events:
see catalogue for course on material science
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