Deviations in modulus of elasticity / poisson's ratio
Deviations in modulus of elasticity / poisson's ratio
(OP)
LS,
When applying a certain (stainless) steel, the modulus of elasticity, shear modulus and poisson's ratio can be found.
Can someone tell how accurate these figures are and what deviations can be expected. Are they e.g. within 5%? Should we have the materials tested every time to be accurate.
Thanks,
DYV
When applying a certain (stainless) steel, the modulus of elasticity, shear modulus and poisson's ratio can be found.
Can someone tell how accurate these figures are and what deviations can be expected. Are they e.g. within 5%? Should we have the materials tested every time to be accurate.
Thanks,
DYV





RE: Deviations in modulus of elasticity / poisson's ratio
Regards,
Cory
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RE: Deviations in modulus of elasticity / poisson's ratio
RE: Deviations in modulus of elasticity / poisson's ratio
The reason for my question: we do an optical measurement of strain of steel shafts (material is mainly C45E). This is an 0.5% accurate measurement, but when calculating back to forces the uncertainty is Youngs modulus (and for torsion also Poisson's ratio).
Can variations up to 10% be expected within 1 type of material? The heat treatment will always be identical (normalized), and afterwards only a few millimeters of material will be turned off.
Thanks,
DYV