Discussion

Discussion - Introduction The use of Poissons Ratio can be...

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Introduction The use of Poisson’s Ratio can be applied to measure the axial longitude and latitude of a material. This can be used in many situations that require safety factors to obtain a successful product in the field and in industrial practices. The system is used to translate strains of the experiment into stresses. The experiment teaches you the basic fundamentals of Longitudinal and Lateral stresses that occur in different materials. Purpose The purpose of this experiment is to measure Poisson’s Ratio of an aluminum beam by loading the beam in cantilever bending. Poisson’s Ratio is described as an elastic constant related to stress and strain in a biaxial stress field. This equation is used to show the correction for transverse sensitivity. Theory Hooke’s Law for biaxial stress shows the relationship between the elastic modulus and Poisson’s Ratio to translate measured strains into stresses. δ = E/1-v² ( ε + v ε ) where: δ = stress, psi (N/m²) ε = strain, in/in (m/m) δ = E/1-v² ( ε + v ε ) v= Poisson’s Ratio (dimensionless) E= modulus of elasticity, psi (N/m²) Poisson’s Ratio is defined as the absolute value of the ratio of transverse strain to the
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This note was uploaded on 11/02/2011 for the course MET 362 taught by Professor Smith during the Spring '11 term at Utica.

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Discussion - Introduction The use of Poissons Ratio can be...

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