An engine part is being tested with a load of 65 000 lb. The allowable tensile stress is 10000 psi ,modulus of elasticity 40×106 psi . If the original length of specimen is 40 inches with elongation not exceeding 0.0155 inches, what diameter of the specimen is rejected.

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Q: What is the unit of strain? Select all correct answers.     m/m     no unit     mm/mm     mm

A: Strain is ratio of change in dimension to the original dimension.

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A:

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Q: 38)A tensile test specimen has a gage length=3.0 inches and a diameter=  .75 inches. Yielding occurs…

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Q: solve all 3

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Q: 40)A tensile test specimen has a gage length=3.0 inches and a diameter=  .75 inches. Yielding occurs…

A: Given:

Q: 39)A tensile test specimen has a gage length=3.0 inches and a diameter=  .75 inches. Yielding occurs…

A: Given:

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.