# Shared Flashcard Set

## Details

Industrial Materials Ch. 4
Keywords
15
Mechanical Engineering
02/06/2014

Term
 Thermal Properties
Definition
 the responses of the material to changes in temperature
Term
 Heat resistance/Heat Resistant Materials
Definition
 The ability of a material to maintain its desired mechanical strength at elevated temperature.Materials with this property are called heat resistant materials
Term
 Transition Temperature
Definition
 The transition temperature is the point below which a material loses its ductility.
Term
 Thermal Conductivity
Definition
 The ability of a material to transfer heat from a body of higher temperature to a body of lower temperature.
Term
 Heat capacity
Definition
 The efficiency of a material to absorb thermal energy is known as heat capacity.
Term
 Coefficient of linear thermal expansion
Definition
 Nearly all materials expand when heated and contract when cooled. [image]
Term
 Peltier effect
Definition
 When two dissimilar metals are brought in to contact, a voltage is present across the junction. The amount of the voltage depends on the chemical composition and temperature.
Term
 Thomson Effect
Definition
 Temperature difference between the ends of a wire made of a single metal, then there is a voltage between the ends of the wire. The amount of voltage is determined by the wire material, the chemical uniformity of the material, and the temperature difference.
Term
 Seebek Effect
Definition
 The scientific action that makes a thermocouple work. It is based on the idea that varying temperatures will produce varying voltages. I.e. the temperature difference between two junctions.
Term
 Resistivity
Definition
 A measure of how well the material resists the flow of electricity. [image]
Term
 Resistance increase/decrease
Definition
Term
 Conductivity
Definition
 Measure of how well the material conducts electricity. Conductivity is the reciprocal of its resistivity and represented by the Greek letter Sigma, [image] Conductivity is represented by the greek letter Sigma.
Term
 Dielectric
Definition
 A non-conducting material such as rubber or glass, inserted between two plates of a capacitor.
Term
 Capacitance
Definition
 Capacitance is the ability of a material or device to store electrical charges.
Term
 Relative permittivity/dielectric constant
Definition
 A dielectric material like Mica, placed between the plates of the same capacitor.
Supporting users have an ad free experience!