Which of the following conditions/factors will reduce a materials fatigue resistance: Select one or more:    a.Experiencing a permanent residual compressive stress b.Increasing the stress amplitude c.Experiencing a mean tensile stress d.Roughening or etching the surface e.Mechanically hardening the surface

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Q: Within a cubic unit cell, sketch the following planes.  i)  (3 -2 1) ii)  (0 1 1) iii)  (2 21)

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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.