Virtual Characterization of the Pore Structure of Nonwoven
Andreas Wiegmann and Jürgen Becker
Faunhofer Institut Techno- und Wirtschaftsmathematik
Nonwoven may be digitized by two methods: as images taken from real media,
or as generated computer representations obtained from average properties
of real media (porosity, fiber diameters, and fiber orientation). Given an
accurate correlation between reality and the computer representation of
nonwoven, the use of generated media can accelerate the search for potential
improvements. We discuss the computer simulation of mercury intrusion
porosimetry by the pore morphology method, and present some examples. Through
the pore morphology method, it is possible to establish links between production
parameters like grammage and fiber diameters, and the porosimetry measurements.
Real media experiments would require more effort, cost and time. Automation of
the procedure, from fiber generation to property computation, allows deriving
analytic formulas for pore size measures depending on production parameters.