ThermoOptical Measuring System TOM_wave

TOM_wave is a measuring system for the detection of material properties at high temperatures. The device is based on the experience the Fraunhofer Center HTL has gathered with the known devices of the series of thermo-optical measuring systems (TOM) and combines a high-temperature furnace (1750 °C) and a CO2 laser (600 W). The furnace is used to reach the base temperature - in a controlled atmosphere - the laser is used for further short-term heating of the samples to generate special measurement signals. The measurement signals are recorded with pyrometers and microphones. TOM_wave uses disc-shaped samples with a volume of about 10 to 20 cm³. With an automatic sample changer, 5 samples are measured in one temperature cycle. Refractory materials, ceramics, composites, metals or glasses can be analyzed with TOM_wave.

The following thermomechanical and optical material properties are measured after completion of the test operation:

• Thermal shock resistance
• Resistance  to thermocycling
• Thermal conductivity
• Dynamic modulus of elasticity
• Coefficient of thermal expansion
• Heat capacity
• Spectral and integral emissivity

• Analysis of the thermomechanical properties of high-temperature materials
• Temperature range from room temperature to 1750 °C in a controlled atmosphere
• Measurement of thermal shock and thermocyclic resistance in custom temperature cycles
• Non-contact measurement of the thermal diffusivity (radial and axial)
• Measuring other parameters such as specific heat, thermal conductivity, emissivity