MCE 230_F10_lec_20 - Modulus of Elasticity(E  E values...

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MCE 230 Materials Science Fall 2010 Lecture - 20
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Mechanical Properties of Metals
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Stress-Strain Behavior
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Hooke’s law: Where E is the modulus of elasticity (Young’s modulus) (Pa or psi) For shear: Where G is the shear modulus (modulus of rigidity) (Pa or psi) Elastic Deformation:
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How to determine E from stress-strain curve On an atomic level; interatomic bonding forces and interatomic separation determine E for different material.
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Unformatted text preview: Modulus of Elasticity (E):  E values for ceramics and metals are in the same range, but its range is lower for polymers  E is function of temperature Modulus of Elasticity (E): For isotropic Poisson’s Ratio ( ν) : Plastic Deformation Different relations are used, the simplest one is the Power law : Tensile Properties  Yield strength  Tensile (ultimate) strength  Ductility  Resilience  Toughness...
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