Quick cyclic loading and unloading of tissue does not allow recovery. Viscoelastic materials exhibit a time delay in recovering their shape. Load CT and take load away = energy lost as ______-. Path to come back is not the same path to get to load state. Loading and unloading are different pathway. Some energy is also lost as heat. If you load a tissue and don't give it time to rest–you will go into plastic range almost right away. Unloading takes longer and loses energy. Need to rest to do something else. Still creeping and add more load–_____more easily?
1) strain
2) stress
3) force
4) pressure