9.1 Weave description

To predict properties of a textile lamina, first you have to define it in My Documents, My Laminas, New. That will open the Edit page like this:

\includegraphics[]{./Images/TextileLamina.png}
Figure 9.1: Edit textile lamina. Click the Back button on your browser to return to your previous page.

First notice that to get this form, you have to click the radio button that says Fabric, which is synonymous for Textile. Then...

Name. It is required

Fiber. It has been defined previously using properties for the specific fiber that was used to fabricate the textile. In this case the fiber is called E-Glass(woven) just as a reminder that this is not just any E-Glass but the specific one that was woven into the textile that is reinforcing this composite lamina. You can choose whatever name you want.
\includegraphics[]{./Images/E-Glass(woven).png}

Matrix. It has been defined previously using properties for the specific Epoxy that was used to impregnate the textile fabric. In this case the matrix is called Epoxy(woven), not because can be Epoxy can be woven–it cannot! but because this is the particular Epoxy that was used to fabricate the composite.
\includegraphics[]{./Images/EpoxyWithE-Glass(woven).png}

Volume fraction. It was measured by matrix digestion (ASTM D 3171), solvent extraction (ASTM C 613), or by the burnout test [2, §4.1.1].

Standard deviation of fiber misalignment. I will use the default until I can get more information on this lamina, which I will get by testing, but only when I am sure that this is the material I will be using in the project. To decide, first I need to do preliminary design with several candidate materials and only when I have a good idea what would be my choice, then I will spend money on testing for these properties.

Angle of the fracture plane. It is known to be approximately 54 deg for Carbon/Epoxy. This is Glass/Epoxy but I cannot afford testing so I will use that value. Anyway, this value is used to predict the intralaminar strength F4 of the tow, but even if the tow fails due to intralaminar shear, the textile-reinforced composite will (sort of) not fail due to intralaminar shear because the tows are woven, so they will (more or less) stay together.

Critical ERR in modes I and II. I will use the default until I can get more information on this lamina, which I will get by testing, but only when I am sure that this is the material I will be using in the project.

Transition thickness. It is known that 0.6 mm is a good approximation for E-Glass/Epoxy, so I will use that value.

Next comes the definition of the geometry of the textile.