Surface crack subject to mixed mode loading

Stress intensity factor distributions at the edge of semi-circular and semi-elliptical surface cracks are obtained for cracks aligned perpendicular to the surface of a semi-infinite solid subject to remote shear parallel to the plane of the crack. Mixed mode conditions along the crack edge are characterized. Application to fatigue crack thresholds in mixed mode is discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.