Thermal properties A bar has an initial length of 100 mm at room temperature of 27oC....

Thermal properties

A bar has an initial length of 100 mm at room temperature of 27oC. The tensile test indicates that the bar yields when it reaches is the stress level of 145 MPa and the strain value of 2.071 x 10-3. The bar is later placed in an oven and heated from room temperature to 100 oC. The linear coefficient of thermal expansion of the material is 23 x 10-6 oC-1 at 27oC, and 34 x 10-6 oC-1 at 527oC. Determine:

a. What is the linear coefficient of thermal expansion at 100 oC?

b. What is the length of the bar in millimeter at 100 oC?

c. Does the heating from room temperature to 100 oC the cause the bar to yield

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samet mamat answered 8 months ago

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