Young’s modulus measurement

What is Young’s modulus?

The Young’s modulus of a solid sample with elastic behavior relates its variation in length to the tensile or compressive force applied to it. Its symbol is E. It is expressed in Pascal (Pa) in the international system, but usual values ​​mean that it is most often expressed in MPa or GPa.

How is Young’s modulus measured?

Young’s modulus is often measured during tensile or compression tests carried out in the elastic range of the sample. It is determined by plotting the variation in length of the sample as a function of the force applied: the slope of this line then equal to E.

Nevertheless, there are other measurement methods, less common but sometimes more precise (natural frequency of vibration, etc.).