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Unformatted text preview: modulus of elasticity is 103 GPa. (a) What is the maximum load (force) that may be applied to a rod specimen 12 mm in diameter without plastic deformation? (b) If the original specimen length is 76 mm, what is the maximum length to which it may be stretched without causing plastic deformation? 4. Given the tensile stressstrain curve in the elastic region of a gray cast iron, determine (a) the tangent modulus at 25 MPa, and (b) the secant modulus taken to 35 MPa. 5. Given the stressstrain curve of an alloy steel, determine (a) modulus of elasticity, (b) 0.2% offset yield strength, (c) tensile strength, (d) modulus of resilience, and (e) ductility in percent elongation. (f) What is the permanent strain when a tensile stress of 1800 MPa is applied and completely removed? 6. Determine the strain hardening exponent of the steel in Problem 5....
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 Fall '08
 HSU

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