Stress concentration at a hooked-fiber textile composite layer with closed internal pores

The new model for a hooked-fiber textile composite layer with polycrystalline matrix was developed. On the bases of numerical solution of the boundary-value problems by FEM the values of stress concentration factors caused by presence of local technological defect (i.e. closed internal pore) were defined under two-axial tension. It was determined that shear is a main mechanisms for damage beginning under loading.