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Find Poisson's Ratio

  1. Sep 4, 2009 #1
    1. Torsion test showed aluminum to have shear modulus of 4.60x10^6psi. Under a tensile test, the same specimen showed a modulus of elasticity of 12.2x10^6psi. Find Poisson's Ratio.

    2. Poisson's Ratio=lateral strain/axial strain

    3. The ratio is a function of both strains. The equations for strain do not have any modulus values in them. I'm not asking for a total explanation, but more of a hint would help.

  2. jcsd
  3. Sep 4, 2009 #2
    The shear modulus formula will allow you to calculate Poisson's Ratio.

    G = E/(2*(1+v))

    Where G is the shear modulus, E is the modulus of Elasticity, and v is Poisson's Ratio.

    Last edited: Sep 4, 2009
  4. Sep 4, 2009 #3
    Thank you so much! I actually discovered that shortly after I posted the thread.

    Thank you again.
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