Table 7 gathers, for each section and crack extension (2c), the
crack size (2ath ) for which the stress intensity factor variation, ∆KI ,
reaches the material fatigue threshold, ∆Kth , when the section is
subjected to the corresponding maximum stress variation. Crack
sizes below these values would never produce fatigue propagation,
given that they would always produce stress intensity factor
variations lower than the fatigue threshold. Therefore, the values