By student00 - 12/23/2018 3:35:03 PM
I am trying to decide between using UD prepreg vs woven prepreg for a surfboard deck. I am leaning towards using a quad axial prepreg (one UD layer of 0,90,45,-45) as opposed to two layers of bi axial woven prepreg(one woven 0,90 and one -45,45 From my understanding:
1) UD being noncrimp has higher stiffness than woven
2) UD being flat has less chances of having resin rich pockets resulting in a laminate less prone to cracking
So essentially a laminate with 2 layers of UD (0,90) would have higher stiffness and lower weight (less resin) than a woven ply (0,90). So it seems like UD would be the more sensible choice, so then why is woven used so commonly? I understand if woven is used instead of one UD as it has fibers in both directions but what about biaxial UD vs woven? Note they are both prepreg, question being wouldnt 2 layers of UD prepreg yield better mechanical properties than one layer of woven prepreg?
I look forward to learning!
|
|