Thermal Physical Analysis
Testing services for Thermal and physical and analysis.
Infinita lab offers a wide range of services for analyzing the thermal and physical characteristics of materials. Measurements are performed in accordance with ASTM and ISO Standards and/or using specially developed techniques. Only infinita lab offers a few the unique measurement techniques.
Measurements and apparent qualities:
- Thermal Conductivity
- The diffusivity of heat
- Thermal Power
ASTM-C1113, ASTM-E1225, ASTM-E1530, ASTM-C518, ISO 8894, DIN 51046, BS1902, and other standard and unique methods are used to measure thermal effects and DTA. We can also measure thermal diffusivity and the conductive and radiative components of thermal conductivity for semitransparent materials. In IR semitransparent materials, we may also measure the necessary optical characteristics for heat computation.
Theoretical assessment
Mechanisms of heat transport are analyzed. material composition and structural optimization (minimum or maximum thermal conductivity).
System for Thermal Conductivity
According to ASTM E 1225, apparent thermal conductivity is determined using the plate steady-state method. A test specimen made of a material with known thermal properties is sandwiched between two identical specimens while being loaded. In the test stack, a temperature gradient is created, and heat losses are reduced by utilizing a longitudinal guard with roughly the same temperature gradient circumstances.
The temperature gradients in the various specimens and the thermal conductivity of the reference materials are used to calculate the thermal conductivity at equilibrium conditions. Additionally, testing can be done in accordance with C 518 Steady State Method and modified ASTM E 1225 (for vacuum circumstances, for semitransparent materials).
Thermal Diffusivity System
The flow method (monotonic two-side heating of the plate) published in ASTM STP 1320 and ASTM STP 1426 is used to assess apparent thermal diffusivity. The average temperature difference between thermocouples positioned in the middle and close to two plate surfaces is used to calculate apparent thermal diffusivity. Additional thermocouples may be placed close to the specimen’s other surfaces (to estimate inaccuracies related to the non-dimensional temperature field). The straightforward formula for apparent thermal diffusivity is obtained by solving the Fourier equations for heating velocities near to constant.
A modified approach (for semitransparent materials) specified in ASTM STP 1426 can also be used for testing.
