FIELD: investigating and analyzing of materials.
SUBSTANCE: method comprises heating the outer surface of the metallic layer with a disk heater and recording time dependence of the surface temperature. The heater is housed in the space of the central probe, which allows the heat flux to be directed normally to the surface of the contact of the probe with the article The ring probe is mounted concentrically to the central probe to keep the heat flux constant. To exclude the heat exchange with the ambient air, each probe is enveloped with one concentric guard ring.
EFFECT: enhanced speed of response.
1 dwg
