TMHL61 Damage Mechanics and Life Analysis, ECTS-points
/SKADEMEKANIK OCH LIVSLÄNGDSANALYS/

Advancement level:
D

Aim:
The purpose of the course is to provide knowledge of the effect of damage (i.e. cracks) on the load tolerance of a design, as well as knowledge about lifetime analysis in relation to materials exposed to variable loads.

Prerequisites:
Solid Mechanics, introductory course, Solid Mechanics; Finite element method.

Course content:
The course consists of two main sections: 1. Introductory fracture mechanics: energy aspects of crack growth. Stress intensity factor. Fracture toughness, crack initiation. Plastic zone. Stable/unstable crack growth. Crack growth with cyclical load (Paris &#180law). 2. Fatigue: Crack initiation and growth. Fatigue limit. S-N diagram. Threshold value. Notch effect. Multiaxial stress state. Variable load amplitude. Crack closure, individual overloads. Life calculation (damage mechanics, partial damage theories). Load properties (utilization analysis, load statistics, load calculation methods). Special problems in fatigue: Low cycle fatigue, corrosion fatigue, fretting).

Course literature:
To be announced.

LAB 1Labratory work
TEN 1Written examination
Course language is Swedish.