EXPRESSION DETERMINATION OF THE CONDITIONAL ELASTICITY MODULUS OF NONWOVEN MATERIALS DEPENDING ON THEIR POROSITY
An additional characteristic of the strength of bulk nonwoven materials is proposed in the form of a conditional modulus of elasticity, which is the ratio of both the breaking load and the actual cross-sectional area of the sample (along the outer contour). Based on the experimental data, an analysis was made of the change in the conditional modulus of elasticity of nonwoven materials depending on their porosity. As a result of the research, mathematical dependencies were obtained that allow calculating the conditional modulus of elasticity and, as a result, predicting the strength characteristics of nonwoven materials manufactured by various manufacturers with sufficient accuracy for technical calculations.