Course content

The course is given every second year, next time will be autumn 2011.
The subject starts with a simple desription of central phenomenological aspects of metal fatigue and their consequenses. Further, basic and fundamental physical parameters involved in fatigue (hysteresises, cyclic respons etc.). Basic micromenchanisms, slip modes, strain localization. Surface phenomena, dislocation structure evolution and repons in FCC, BCC and HCP crystals. Polycrystals, commercial alloys, advanced MMC's microstructural effects, physically short crack behavious, models for surface roughening and short cracks va. long cracks.

Learning outcome

The candidate has to verify solid knowledge in regard to the fatigue phenomenon and the related fundamentals. Further, the candidate should develop expertice in the area of relationships between microstructure,fatigue properties and the operating fatigue mechanisms.

Learning methods and activities

Exercise:
Alt. 1: Modelling fatigue
Alt. 2: Fatigue advanced alloys
Alt. 3: Thermal fatigue
Alt. 4: Own choice topic.

Compulsory assignments

• Exercises

Recommended previous knowledge

The subject requires some background in materials technology and dislocation theory, i.e. through the subjects Materials technology 1&2 (TMT4170 & TMT4175), TMT4240 Materials Microstructure and Properties and Mechanical properties of metals or TMM4105 Materials Technology.

Course materials

Literature:
Selected publications and a report written by H.J. Roven.

Credit reductions