DTC-300 Getting Started Guide
Page 15
Test Stack
The sample to be tested is held under a reproducible compressive load between two polished metal sur-
faces (the “test stack”), each controlled at a different temperature. The lower contact surface is part of a
calibrated heat flux transducer. As heat flows from the upper surface through the sample to the lower sur-
face, a uniaxial temperature gradient is established in the stack. By measuring the temperature difference
across the sample along with the output from the heat flux transducer, thermal conductivity of the sample
can be determined when the sample thickness is known.
Figure 4
Test stack on the DTC-300.
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