6. Glossary

Equivalent damage load (Equivalent fatigue load or Load Intensity Value )

Constant amplitude fatigue loading defined by F _eq which repeated N _eq cycles produces the same fatigue damage as the entire original variable amplitude signal. F _eq can be an effort, a displacement, an acceleration or any other indicator proportional to the parameter (stress, strain, energy dissipated per cycle...) generating the fatigue damage.

Courbe de Wöhler (Wöhler curve or S-N curve )

Representation of fatigue life. Abscissa: number of cycles in logarithmic scale, ordinate: loading amplitude in linear or logarithmic scale.

Goodman diagram

Representation...