Crack Closure Effects on Fatigue Crack Propagation Rates: Application of a Proposed Theoretical Model

Table 3

Material constants concerning the Paris crack propagation relation.

—	—	—	N⋅mm^−1.5
0.01		3.4993	1498
0.50		3.5548	1013
0.70		3.0031	687

in mm/cycle and in N⋅mm^−1.5.