What is a probable ratio of PU resin to GF Cloth in order to achieve high Young Modulus of a composite system?

I have been trying some ratio's of Polyurethane Resin to Glass Fiber Cloth but my young modulus results come up medium to low (15.000 MPa circumf. and 8-10.000 axial) and my Poisson ratio quite...

25 May 2018 9,024 2 View