Glossary of Terms
Thermal conductivity (often denoted by k, λ, or κ) refers to the intrinsic ability of a material to transfer or conduct heat.
Thermal conductivity is quantified using the International Systems of Unit (SI unit) of W/m•K (Watts per meter per degree Kelvin), and is the reciprocal of thermal resistivity, which measures an object’s ability to resist heat transfer.
The rate at which heat is transferred by conduction through a unit cross-section area of a material when a temperature gradient exits perpendicular to the area.
Guarded Heat Flow Meter (GHFM)
Contact Transient Method (CTM)
Particle Thermal Shunting
Composites, where the filler has a significant difference in thermal conductivity to the matrix. The transient heat signal can shunt through or around the particle or filler (via matrix), resulting in an overestimation of the materials’ thermal conductivity. This can be a significant source of error, when comparing results to a steady-state measurement, where the system is completely evolved.