Hi there, I am currently looking to measure the modulus of elasticity by using vibration.....any one have understanding to this object send me to this e-mail thesonsir20@yahoo.com ..................................thanks

Learn to google.........................................................thanks

Sure, elastic modulus and density are related to wave speed and then resonant frequencies vs dimensions.

It can be a very precise method.

BUT quite often, precision is degraded by how much Poisson's coefficient influences the modulus.

Typically in a flexural thin beam, the upper and under side are linked because the elongation of one side is hampered as this side can't get narrower as the other gets wider.

This is why shear modulus is easier to measure with resonance, preferably in torsion. This is actually done for viscoelastic coefficients in polymers.

Also, you need special probe forms that allow low vibration losses at the fastenings and in the air, as well as forms and dimensions that give you reasonable frequencies.

Not very nice neither, theories with Poisson's coefficient don't work very well in real life. They just provide nice material for books and teachers. This means that a link between the E modulus and what you measure with a fixed transverse dimension is not very accurate with metals, and not accurate at all with plastics and elastomers.

All put together, this method is not universal.

Using an e-mail: no thanks, I prefer the forum.