Abstract
This is a report of characterization and simulation of pores in nonwoven fabrics and application of techniques developed for analyzing structural information by imaging. Aramid nonwoven fabrics and simulation of nonwoven fabrics were investigated in terms of pore round-ness, pore ellipticity and pore orientation. Changes in pore properties resulting from web density or variation in fiber orientation were characterized by geometrical technique for seven simulations and two aramid nonwoven fabrics. As the density of nonwoven fabric increased, pore roundness, ellipticity, and orientation did not change substantially, but as the fiber orientation of nonwoven fabric was randomized, the pore shape parameters changed significantly.