PHYSICAL PROPERTIES OF MATERIALS

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Why Density is Important Important consideration in material selection for a given application, but it is generally not the only property of interest •Strength is also important, and the two properties are often related in a strength-to-weight ratio, which is tensile strength divided by its density Useful ratio in comparing materials for structural applications in aircraft, automobiles, and other products where weight and energy are of concern ©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Thermal Expansion •Density of a material is a function of temperature In general, density decreases with increasing temperature Volume per unit weight increases with increasing temperature Thermal expansion is the name for this effect of temperature on density Measured by coefficient of thermal expansion ©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Page 1 and 2: PHYSICAL PROPERTIES OF MATERIALS
Page 3 and 4: Physical Properties in Manufacturin
Page 5: Density Defined Weight per unit vol
Page 9 and 10: Thermal Expansion in Manufacturing
Page 11 and 12: Melting of Metal Alloys •Unlike p
Page 13 and 14: Figure 4.1 - Changes in volume per
Page 15 and 16: Thermal Properties •Thermal expan
Page 17 and 18: Volumetric Specific Heat The quanti
Page 19 and 20: Thermal Diffusivity The ratio of th
Page 21 and 22: Mass Diffusion Movement of atoms or
Page 23 and 24: Mass Diffusion in Manufacturing •
Page 25 and 26: Electrical Properties •Movement o
Page 27 and 28: Resistivity Property that defines a
Page 29 and 30: Engineering Materials and Electrica
Page 31 and 32: Electrical Properties in Manufactur
Page 33 and 34: Terms in Electrochemical Processes
Page 35 and 36: Figure 4.3 -Example of electrolysis
Page 37 and 38: Chemical Reactions in Decomposition

PHYSICAL PROPERTIES OF MATERIALS

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