Abstract: A Semi-circular Bend (SCB) specimen containing an inclined U-shape edge notch was used to study mixed mode crack initiation and growth behavior in three-dimension. The effect of the inclination angle of the notch on the crack trajectory was studied. After identifying the crack path, mode I and II stress intensity factors for four different crack lengths on the real path were determined. The variations of mode I and II stress intensity factors on the crack front were also depicted. It is found for different inclination notch angle that, the crack initiated from the notch in SCB specimen at the point of the longest vertical coordinate on the notch surface. The maximum value of mode I normalized stress intensity factor occurs only on the mid plane in the case of pure mode I. However, this location moves away from the mid plane to the surface of the specimen by increasing the value of the mode mixity.