Prediction of Pore Size Characteristics of Needle-Punched Nonwoven Geotextiles Subjected to Uniaxial Tensile Strains

Table 1

Properties of nonwoven geotextiles and structures.

	NW100	NW200
Mass per unit area (g/m^2)	107	225
Thickness (μm)	863	1690
Density of fibre (g/cm^3)	1.32	1.32
Diameter (μm)	23	23
Out-of-plane Poisson’s ratio	0.17	0.31
In-plane Poisson’s ratio (machine direction)	1.17	1.16