Theoretical introduction to express way of the complex determination of the thermophysical parameters of metals

TL;DR

This paper introduces a theoretical method for accurately determining the thermophysical parameters of metals using controlled heating and temperature measurements, avoiding distortions caused by traditional thermocouples.

Contribution

It presents a novel approach combining bulk heating and non-contact temperature measurements, with theoretical calculations to improve accuracy in thermophysical parameter determination.

Findings

High accuracy demonstrated on iron-based materials

Method effectively accounts for heat losses and temperature field distortions

Potential for improved material characterization in conductive metals

Abstract

A method to measure thermophysical characteristics (TPC) of conductive materials is described. The method is based upon controlled bulk (e.g., Ohmic) heating and measurement of the averaged over the volume of a sample temperature and the temperature of the surface of a sample. To measure averaged over a sample volume temperature a dilatometric technique could be used and surface temperature could be measured by x-ray method. This allows one to avoid distortion of the temperature field by the thermocouples and directly takes into account heat losses from the surface of a sample. The treatment of the experimental data should be based upon theoretical calculations presented in this paper. The measured values of the averaged over the volume of a sample temperature and a surface temperature allow for the calculation of TPC of the material. The experimental data obtained on the iron-based materials prove the high accuracy of the described approach [1-3].