CRACK GROWTH OF THROUGH AND PART-THROUGH THICKNESS CRACKS UNDER CYCLIC LOADING

摘要

Stress intensity factor expressions corrected for crack front curvature are used to derive the corrosion fatigue growth data for through and part-through thickness cracks subjected to cyclic loading. Results are obtained by application of the boundary element method for solving three-dimensional crack problems. Different radius of curvature is assumed using the open literature cyclic crack growth parameters for air and sea water. As is to be expected, crack growth increased with decreasing crack front curvature and in sea water environment when compared with that in air. [References: 8]