Interaction between the Faces of a Squat-type Fatigue Crack Determined by Use of the Grating Holographic Interferometry

摘要

The paper presents the results of experimental study of interaction between faces of a squat-type fatigue crack. The phenomenon of crack faces interaction plays an important role in prediction of the rail head crack development. The results indicate that the conditions of crack faces interaction vary along the crack length. The values of determined crack faces interaction factor will be used in a numerical simulation of fatigue crack development.