Standard Test Method for Thermal Diffusivity by the Flash Method

Importancia y uso:

5.1 Thermal diffusivity is an important transient thermal property, required for such purposes such as design applications, determination of safe operating temperature, process control, and quality assurance.

5.2 The flash method is used to measure values of thermal diffusivity, α, of a wide range of solid materials. It is particularly advantageous because of simple specimen geometry, small specimen size requirements, rapidity of measurement and ease of handling.

5.3 Under certain strict conditions, specific heat capacity of a homogeneous isotropic opaque solid specimen can be determined when the method is used in a quantitative fashion (see Appendix X2).

5.4 Thermal diffusivity results, together with related values of specific heat capacity (C_p) and density (ρ) values, can be used in many cases to derive thermal conductivity (λ), according to the relationship:

Subcomité:

E37.05

Referida por:

C1671-20A, E2585-09R22, B1015-20, C1793-15R24, B0883-24, C1783-15R24, C0781-20, D8157-19, C1470-20, C0714-23, D7775-21, D4762-23, D5144-08R21

Volúmen:

14.01

Número ICS:

17.200.10 (Heat. Calorimetry)

Palabras clave:

flash method; infrared detectors; intrinsic thermocouples; specific heat capacity; thermal conductivity; thermal diffusivity; transient temperature measurements;