The Preform Properties tab of this dialog is used to specify the physical properties of the preform.
The collection of property values defined on the dialog are saved to a property set with the description shown in the Name box.
Note: In RTM and SRIM, resin is forced to flow through a cavity in which reinforcing fiber mat (also called preform) is present. The flow type, characterized by the properties of the fiber mat, can be isotropic or anisotropic, depending on the network of the mat.
Note: Sometimes a preform is placed on areas with different thicknesses. A cavity with varying thickness, but reinforced with the same preform, can result in different porosity and permeability. To handle this situation, specify the Reference thickness on which the preform properties were based.