MEASUREMENT SYSTEM AND METHOD FOR THERMAL DIFFUSION COEFFICIENT OF ORTHOTROPIC SOLID MATERIAL

A measurement system and method for a thermal diffusion coefficient of an orthotropic solid material. The system comprises a measurement sample (1), a constant-temperature water bath tank, a sample fixing device and a data acquisition system, wherein the constant-temperature water bath tank comprises a water bath tank body (2), a water bath tank cover (3) and a water bath tank controller (4); the sample fixing device comprises a fixing cover (5), adjusting bolts (6), a fixing cross (7), a graphene sticker (8), a thermal insulation material (9) and a thermal-resistant rubber band (10); and the data acquisition system comprises a thermocouple (11), an A/D converter (12), a voltage-stabilized power supply (13), a USB-to-RS485 communication converter (14) and a notebook computer (15). On the basis of an unsteady-state thermal conduction product method, a sample constant-temperature boundary is constructed by using a constant-temperature water bath and the graphene sticker (8), a sample thermal-insulation boundary