Why does carbon fibre have that pattern?
In: Engineering
CRFP is pretty much a fabric which is woven together and then soaked in glue (resin), hence it goes hard when dried. The pattern is the weave of the fabric, quite like a straw mat.
It’s woven that way so that when it is pulled (in tension), the load is distributed throughout the fabric. The fabric is much stronger than the resin, hence it is ideal for the resin to not be a part of the load path. e.g. if it were not woven, then the fibers would just pull away from each other as the resin breaks and the fibers stay intact.
“that pattern” is a woven pattern. The reason carbon fiber has that pattern is because it is woven.
By having carbon fibers running 90 degrees to one another and having them switch back and forth top-bottom the fibers become decently ‘entangled’. This is a good way to make ‘fabric’ sheets of fiber that can then have resin added to make them tougher and distribute the load.
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