A fatigue test was conducted in which the mean stress was 70 MPa (10150 psi), and the stress amplitude was 230 MPa (33360 psi). (a) Compute the maximum stress level. i (b) Compute the minimum stress level. i (c) Compute the stress ratio. i MPa i MPa (d) Compute the magnitude of the stress range. MPa

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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.