|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Frontiers in Solidification: An MPMD Symposium in Honor of Michel Rappaz
||Inverse Methods and Temperature Gradients – An Expedient Combination for the Determination of Thermophysical Properties
||Qingyu Zhang, Aaron Grasemann, Stephanie Lippmann, Mingfang Zhu, Markus Rettenmayr
|On-Site Speaker (Planned)
Over several decades inverse methods have been developed that were capable of calculating back to boundary conditions from measured, scattering temperature distributions. The methodology was found to be promising, and several authors extended it to determine thermophysical data, particularly thermal diffusivity and heat capacity. However, most of these works remained essentially theoretical and lack experimental verification and practical application. Michel Rappaz contributed to the methodological development of inverse methods and their introduction in the practice in materials science. If a measured temperature distribution is available and the boundary conditions are known, thermophysical data can be determined in complex alloys with considerable detail. State-of-the-art experimental equipment including aerogel as thermal insulating material and an infrared camera as temperature sensor in combination with an inverse method allows to precisely determine heat diffusivities, heat conductivities and heat capacities. This is shown for single-phase and multi-phase binary and multicomponent Cu and Al alloys.