Fatigue & Fatigue Life Analysis
In the area of fatigue and fatigue life analysis research is being carried out with the subjects as follows: experimental characterization and modeling of the fatigue behaviour of continuously fiber reinforced polymers, the identification of input parameters for the fatigue life analysis (i.e. fatigue strength, decrease of residual strength, stiffness degradation) and the generation of linear and nonlinear models; the layer-based fatigue life analysis of polymer composites on the basis of the classical laminate theory (analytically describable stress conditions) and by using the finite element method (complex geometry thin-walled and moderately curved structures) as well as the experimental fatigue life testing of uni- and multiaxially loaded complex structures.
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| Economic Sectors | Applications (Examples) |
|---|---|
| Automotive | Body structures |
| Engineering | High accelerated machine parts |
| Military and Security | Load bearing structures |
Special Expertise
- Fatigue life simulation
- Multiple test facilities and measurement methods
- Component test rig with 6 channel control
- Material test rigs
- High frequency test rig
- 3D optical strain and deformation measurement mm to m
- Linking of strain and deformation measurement to structural FEA (Ansys)
- Locally resolved laser and video extensometry
- Acoustic emission and phased array ultrasonic measurement equipment
Typical Materials
- GFRP
- CFRP
- Continuously fiber reinforced polymers#
Typical Questions:
- How can the fatigue resistance of fiber reinforced composites be characterized within reasonable time and budget limits?
- Which parameters influence the fatigue resistance of fiber reinforced composites?
- How can the structural durability of fiber reinforced composites be predicted in a reliable way?
