Forudsætninger/Anbefalede forudsætninger for
at deltage i modulet
The module builds on knowledge gained in the course module in
Structural Mechanics or similar.
Modulets indhold, forløb og pædagogik
Students who complete the module:
- Have gained a comprehensive understanding of fracture
- Have gained knowledge in applying classical methods in
designing against fatigue fracture by studying notches and their
effect, by studying strainfatigue, and by analysing eigen-stress
- Have gained an understanding of how to apply fracture mechanics
in the assessment of reliability of practical designs and machine
- Be able to assess the stability of cracks using Griffith’s and
Irwin’s fracture criteria, energy release rate, and toughness
- Be able to apply linear elastic solutions for sharp cracks and
obtain the stress intensity factor.
- Be able to assess mixed mode loading and apply crack growth
- Be able to assess crack growth by fatigue, partial damage and
- Be able to assess crack initiation, notches and their
- Be able to determine life time and apply methods for improving
the fatigue strength and life time of machine elements and welded
- Be able to understand and apply linear elastic concepts in
assessing the stability of cracked structures under static and
- Be able to distinguish between different fatigue regimes, i.e.
elastic or plastic, and un-cracked or pre-cracked, and apply
correct methodology to each case in relevant structures.
- Be able to determine the lifetime of welded components, and
explain fatigue in welded components on the basis of fracture
Type of instruction
Lectures, etc. supplemented with project work, workshops,
presentation seminars, lab tests.
Omfang og forventet arbejdsindsats
The module is 5 ECTS which is corresponding to 150 hours of