If the fiber weight per unit area of a woven roving(WR) is given as
24oz/sq yard fabric with a 5 X 4 weave style, is it a wise idea to
calculate the Young's Modulus (Tensile Modulus) of the WR by assuming
different volume fractions (Vf=0.3,0.4,0.5,0.6 etc)?

Vf=W/(t*d) where, W=weight per unit area (known value) t=thickness (known value) d=fiber density (known value)

I saw this equation from a book. Is this equation make any sense to everybody? Besides that, I wonder if anybody know the way to calculate Young's Modulus, or Shear Modulus, of WR, Chopped Strand Mat, Continuous Filament Mat and Roving if testing is unapproachable at this point?

Your help is much appreciated.

Vf=W/(t*d) where, W=weight per unit area (known value) t=thickness (known value) d=fiber density (known value)

I saw this equation from a book. Is this equation make any sense to everybody? Besides that, I wonder if anybody know the way to calculate Young's Modulus, or Shear Modulus, of WR, Chopped Strand Mat, Continuous Filament Mat and Roving if testing is unapproachable at this point?

Your help is much appreciated.