Thermal Expansion/Contraction
The fractional change in length of a material subjected to a unit change in temperature.
Thermal Stabilizers
Compounds added to the plastic resins when compounded that prevent degradation of properties due to elevated temperatures.
Thermography
The recording of temperature variations; a technique to assist in the detection of voids around pipelines.
Thermoplastic
A material, such an polyethylene, that will repeatedly soften when heated and harden when cooled.
Thermoset
A material, such as epoxies, that will undergo or has undergone a chemical reaction by the action of heat, chemical catalyst, ultraviolet light, etc., leading to an infusible state.