Hello everyone,
We are building a formula student car and this is our first time. I have no prior experience in carbon fiber fabrication. I have decided to do vacuum infusion. How to decide the number of layers needed? I've already calculated the required thickness for the strength I need but there are few things which make me confused,
- If 3K 200GSM 2/2 twill fabrics are used, how to know the thickness of 3 layers with resin? 
- If a core material is used could I reduce the number of carbon fiber layers? 
- Any suggestions on the fabric type, number of layers and core material combinations to get 'good' strength so that it won't fail when hit on a cone, rock or something hard (I mean a rule of thumb from your experience)?
Thanks!!