Change a part of a body.

I am making a small demo of Tank fighting, every tank has components of :front head, back head, left head, right head, left wheel,right wheel etc. if one component of a tank get shot, this part will look damaged(with different texture or meshes,or animation), does anyone knows a similar sample of how to implement it? how to orgnize those components and change one component when it got shot?


Thanks a lot!

Rosey