3. Parameter-surface relationships
The relationships between the above functional parameters and surface damage are not yet fully described, as the degradation mechanisms are not clearly identified, particularly at the scale of the crystalline structure. In addition, the relationships between phenomena at this scale, at that of asperities and finally at that of stress application are poorly understood. However, certain trends can be identified. To this end, considering the parameters at the two scales defined in paragraph 2.2, we will examine the parameters of influence and their limits on each type of surface damage.
3.1 Superficial fatigue
Let's first consider the problem of plastic deformation, which frequently precedes surface fatigue. Tabor
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Parameter-surface relationships
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