+x Massimiliano - 9/12/2020 6:47:08 AM+x DD-Compound - 9/12/2020 5:52:09 AMYou can say roughly 1000g/m2 per mm. We mostly use a 1000g quadraxial two layers each side. That is a laminate that suits to a lot of scenarios.If you can’t get that use maybe 4 layers of 600g Biax (yes that would be little thicker and heavier but it’s a boat not a airplane)It is important to make it 0/90/+-45 to get a quasi isotroph laminate.Also take care on symmetry, otherwise your platform can be twisted badly. For the core you can bond 2x10mm together but take care it’s bonded proper, otherwise it will delaminate at neutral axis and you will loose stiffness and make sure the holes are not closed, otherwise your infusion will fail.At that swim Plattform I would go thicker that 20mm and would not put a waffle at the bottom. Then better go to 50mm thickness for stiffness and you are safe. For twist you can add some UD layers but I don’t think that’s needed.Thank you DD-Compound!I am not able to source any quadriaxal carbon from my suppliers, can a biaxial +/-45° alternated with a twill do the same job?
+x DD-Compound - 9/12/2020 5:52:09 AMYou can say roughly 1000g/m2 per mm. We mostly use a 1000g quadraxial two layers each side. That is a laminate that suits to a lot of scenarios.If you can’t get that use maybe 4 layers of 600g Biax (yes that would be little thicker and heavier but it’s a boat not a airplane)It is important to make it 0/90/+-45 to get a quasi isotroph laminate.Also take care on symmetry, otherwise your platform can be twisted badly. For the core you can bond 2x10mm together but take care it’s bonded proper, otherwise it will delaminate at neutral axis and you will loose stiffness and make sure the holes are not closed, otherwise your infusion will fail.At that swim Plattform I would go thicker that 20mm and would not put a waffle at the bottom. Then better go to 50mm thickness for stiffness and you are safe. For twist you can add some UD layers but I don’t think that’s needed.