In a composed material subjected to normal stresses in the direction parallel to the fies Figure 2 a, both the fie and matrix were subjected to unequal longitudinal strains around the ends of the fies Matthews and Rawlings,1994.
En un material compuesto solicitado a esfuerzos normales paralelos a la fibra figura 2 a, la matriz y la fibra experimentan deformaciones longitudinales diferentes alrededor de los extremos de la fibra Matthews y Rawlings, 1994.