This document specifies a method for the determination of the thermal effusivity.
This document is applicable to materials with thermal effusivity in the approximate range 40 W⋅s1/2⋅m−2⋅K−1 <bn < 40000 W⋅s1/2⋅m‑2⋅K‑1, and temperatures in the range of 50 K < T < 1 000 K.