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the chemical environment likely to be encountered on the structure of interest at the location of interest,
the material from which the component is manufactured,
the orientation of the critical forces (loads) applied externally and internally with respect to the critical directions in the material,
the susceptibility of the material to a given type of corrosion,
the temperature of exposure of the component,
the type of forces applied i.e. sustained force or cyclic force (constant force amplitude or variable force amplitude),
the type of exposure to the chemical environment i.e. constant, intermittent, concomitant with the forces (corrosion fatigue or stress corrosion cracking) or sequentially with force (corrosion/fatigue or corrosion-fatigue),
the rates of corrosion attack,
the potential influence of the effects of corrosion on fatigue crack nucleation and propagation,
the impact of any related corrosion degradation to residual strength,
the potential for widespread corrosion damage to occur (WCD), and
the potential impact of corrosion on the occurrence of widespread fatigue damage (WFD) and its impact on structural integrity.
Review of Pitting Corrosion Fatigue Models, D.W. Hoeppner, V. Chandrasekaran, and A.M.H. Taylor, University of Utah and FASIDE International Inc.