Figure 5. The shape of elliptic section defect, with central crack and semi-axes a & b

From

Determination of the Stress Intensity Factor with an Empirical Approach for Circular and Elliptical Cracked Sections

Hicham Laribou, Chadia Qotni

American Journal of Mechanical Engineering. 2022, 10(1), 9-16 doi:10.12691/ajme-10-1-2