Thermophysical property measurements at high-temperatures for power engineering and additive manufacturing processes

  • To address the needs for increasing efficiency in power conversion, stratified structures like thermal barrier coatings, are used to increase operation temperature. Also advanced material processing like 3D laser printing of metals and ceramics are based on a layer-to-layer process at high temperatures, resulting in non-homogeneous components. Both systems require more and more detailed investigation methods to characterise the material properties of the resulting structures and to optimize the relevant processes. To address the required needs in advanced material characterisation recently an attempt was started to develop a unique measurement set-up for advanced material characterisation. This method is based on the well know laser flash principle, which was improved by adding supplementary heating sources and additional detection channels. Combining different heating mechanism and heating times with the two-dimensional measuring of the thermal flow across the sample enables the determination of different opto-thermal parameters and other material properties, e.g. mechanical contact, electrical conductivity or optical data, which also depend on or affect the flow of heat. In this paper we describe the implementation of the different optical methods to measure the thermal heat flow by point-like and two-dimensional temperature measurement and present first results on several samples.

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Author:Jürgen Hartmann, Jochen Manara, Mathias Zipf, Thomas Stark, Kevin Knopp, Marc Zänglein, Philipp Lenski, Ekkehard Schreiber, Franz Schmidt, Martin Brunner, Michael Müller
Subtitle (English):QIRT 2018, 25 - 29 June 2018, Berlin, Germany
Place of publication:Berlin
Document Type:Conference Proceeding
Year of publication:2018
Publishing Institution:Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt
Contributing Corporation:14th Quantitative InfraRed Thermography Conference
Release Date:2018/11/20
Tag:additive manufacturing process; thermophysical property measurement
Institutes and faculty:Fakultäten / Fakultät Elektrotechnik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 536 Wärme
Regensburger Klassifikation:Technik
Licence (German):License LogoCreative Commons - CC BY-ND - Namensnennung - Keine Bearbeitungen 4.0 International
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