An original method to estimate local thermophysical properties and latent heat from Thermal Field Measurement (TFM)

International audienceThis paper presents an original method: (i) to estimate thermophysical properties (heat capacity C and thermal condictivity K) and (ii) to experimentally validate heat source estimations. The method, called Thermal Field Measurements (TFM), is based on infrared thermal observations during cooling experiments in a same experimental setup. Results obtained with this method are in good agreement with other resutls published in literature. Only the homogeneous case is presented in this paper but a 1D heterogeneous case will also be presented in the conference

Dissipated energy measurements as a marker of microstructural evolution: 316L and DP600

The thermomechanical characteristics and, more specifically, the dissipative behavior of two steels (a DP600 and a 316L stainless steel) have been studied using infrared measurement methods. All dissipated energy measurements have been performed during traction–traction uniaxial tests in the elastic domain. It has been shown that the dissipated energy of these materials is dependent on the material plastic strain and could be used as a non-destructive criterion to monitor the material evolution during loading sequences. Different kinds of loading sequences have been tested, including uniaxial tensile tests, alternative traction–traction loadings and recovery periods to underline specific characteristics of the material

Dissipative energy as an indicator of material microstructural evolution

In this study, the material microstructure evolution has been studied thanks to two indicators: the cumulated plastic strain and the energy dissipation due to internal friction under cyclic loading. An experimental procedure has been designed to underline the variations of the dissipative energy due to cold work on a DP600 specimen. The results showed that the dissipative energy increases with the plastic strain and can be used as an indicator of material microstructural evolution

An original method to estimate local thermophysical properties and latent heat from Thermal Field Measurement (TFM)

International audienceThis paper presents an original method: (i) to estimate thermophysical properties (heat capacity C and thermal condictivity K) and (ii) to experimentally validate heat source estimations. The method, called Thermal Field Measurements (TFM), is based on infrared thermal observations during cooling experiments in a same experimental setup. Results obtained with this method are in good agreement with other resutls published in literature. Only the homogeneous case is presented in this paper but a 1D heterogeneous case will also be presented in the conference

An original method to estimate local thermophysical properties and latent heat from Thermal Field Measurement (TFM)

International audienceThis paper presents an original method: (i) to estimate thermophysical properties (heat capacity C and thermal condictivity K) and (ii) to experimentally validate heat source estimations. The method, called Thermal Field Measurements (TFM), is based on infrared thermal observations during cooling experiments in a same experimental setup. Results obtained with this method are in good agreement with other resutls published in literature. Only the homogeneous case is presented in this paper but a 1D heterogeneous case will also be presented in the conference

An original method to estimate local thermophysical properties and latent heat from Thermal Field Measurement (TFM)

International audienceThis paper presents an original method: (i) to estimate thermophysical properties (heat capacity C and thermal condictivity K) and (ii) to experimentally validate heat source estimations. The method, called Thermal Field Measurements (TFM), is based on infrared thermal observations during cooling experiments in a same experimental setup. Results obtained with this method are in good agreement with other resutls published in literature. Only the homogeneous case is presented in this paper but a 1D heterogeneous case will also be presented in the conference