crankwise probably not, then again like mentioned above if you have the machine setup correct and do not over rev it usually wont take out the bearings in the same manner (however like stated it would be extremely hard to diagnose that), most of the engine failures that go hand in hand with nitrous (like mentioned above) are do to burning it up.
on top of that however I think it is outrageous for a person to even have the notion that they should have warranty if they run nitrous/turbo... etc on engine components, and the OP trying to destroy the engine just so warranty can replace it, if there is a defect then yes the engine should be replaced/rebuilt but trying to make it fail is taking advantage of the system.