I take it your not an engineer then?
you need to consider the mass/velocity of the object in question here.
A chainsaw's chain/clutch/engine has very little mass, thus even at speed, there's very little inertia to deal with.
same for an F1 car, the whole car is only slightly over 400Kg's (without driver/fuel etc), so relatively speaking, even at 200Mph, it's still nothing like the same energy as the rotational parts of a jet engine.
realistically, you would need significant shielding to stop this kind of part breaking out, to the point you would be increasing the weight/size of the engine by 2-3 times with still no guarantee that this would stop *any* failure breaking out.