Composite repairs to cracked holes under bi-axial loading

摘要

This paper begins by briefly discussing a simple method for calculating the stress intensity factors for cracks emanating from a notch under arbitrary loading. A range of examples are presented to demonstrate the accuracy of the present method. This tech- nique is then used to extend existing design formulae for the composite repairs to cracks in thin metallic skins [J. Compos. Struct. 11 (1) (1989) 57: Int. J. Solid Struct. 17 (1981) 827] to allow for the repair of cracks at holes or notches under complex bi-axial loading.