Thickness determination of semitransparent isolated solids using the flash method and an analytical model

Abstract

As groundwork for thickness determination of polymeric surface protection systems for concrete, we present a method for measuring the thickness of isolated semitransparent solids using pulse thermography both in transmission and reflection geometry. Since standard models [1] do not capture semitransparency, an advanced analytical model by Salazar et al.[2] is applied. Physical material parameters are deduced by fitting experimental data from samples of wellknown thickness. Using those, the thickness of samples of the material can be obtained by fitting, as demonstrated for different semitransparent polymer materials.