Don't know,; can carbon fibre withstand shock loads and vibration?
It certainly has a very high strength to weight ratio, but if hit above its strength limit doesn't it absorb the shock by disintegrating?
And does carbon fibre have any 'give'? A metal item will flex under normal use and permanently bend or creep under overload.
How robust is carbon fibre to surface abrasion? Would surface scratches weaken the structure?