Modulus of Elasticity

18/5/2011
I've already left the world of blogging for a while and today i am coming back. I'd guess i better get warm up.

Modulus of elasticity is, E = stress/strain

A material with a high elasticity meaning that it is stiff and hence it deforms relatively little under load. So, quite abstract isn't it. i'll take one example from badminton racket. A stiff racket meaning when you hit it it bend little while a flexible racket when you hit it, it will bend more.
So if you are using carbonex which is stiff shaft, that mean it is stiffer that the steel gonna hurt you shoulder more.


E for steel is 205 000 N/mm2


So when you have a steel you pull it and pull it then you release it, it will go back to its on shape. That is because it is still in the elastic range. So next you try again with a greater force, you pull it untill you can feel the warmness of the steel when you release it, it won't go back to its original length, because all the energy have been lost in friction when the steel crystal have dragged over each other. This is the plastic range.