DETERMINATION OF THE CHARACTERISTICS OF CRACK RESISTANCE FOR UNIDIRECTIONAL GLASS-REINFORCED PLASTICS

摘要

We determine the characteristics of crack resistance of thin-sheet composite orthotropic polymeric materials by using the fields of displacements and strains in the process zone constructed by the method of digital correlation of speckle images. It is shown that, for fibrous unidirectional composites in the complex stressed state, the fracture energy and critical stresses depend on the angle between the orientation of the notch and the direction of reinforcement.