Method of determining thermal coefficient of materials

Details Method of determining thermal coefficient of materials Method of determining thermal coefficient of materials

1989-05-05

1991-04-09

Cuchlinski, Jr., William A.

Thermal measuring and testing

Determination of inherent thermal property

Thermal conductivity

374 29, 374 43, G01N 2518

Patent

active

050059858

ABSTRACT:
A method for determination of the thermal conduction coefficient of a material sample comprises measurement of momentary temperature differences between two opposite surfaces of the material sample and measurement of heat supplied by a heater. Said material sample is placed in a system composed of the heater, two identical reference samples having known thermal conduction coefficient and two heat sinks. The material sample and the heater are sandwiched between the two heat sinks. All of them as so arranged are maintained in thermal contacts with each other. The measurements are made during a continuous linear change of the temperature of the two heat sinks. The thermal conduction coefficient of the material sample is determined on the basis of the following equation: ##EQU1##

REFERENCES:
patent: 3263485 (1966-08-01), Mahmoodi
patent: 3279239 (1966-10-01), Arends
patent: 3733887 (1973-05-01), Stanley et al.
patent: 3971246 (1976-07-01), Sumikama et al.
patent: 4630938 (1986-12-01), Piorkowska-Pakzewska et al.
patent: 4859078 (1989-08-01), Bowman et al.
Hager, Jr., "Miniature Thin-Heater Thermal Conductivity Apparatus," Proc. 5th Annual ISA Test Measurement Symposium, New York (Oct. 1968).

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