X-ray Micro-Tomograph
Since April 2009, the NaWiTec research group has been using an X-ray tomography system for characterization and non-destructive testing of particle characteristics on a three-dimensional basis. The device allows the measurement of pores and volume distributions and the concealed microstructure of individual particles or any type of fiber materials. The finance of the unit was financially supported by the Ministry of Education of Saxony-Anhalt.

The CT Alpha, manufactured by Procon X-ray Company, is characterized by a spacious experimental room. Internal fittings provide possibilities of making a non-contact manipulation meanwhile drying or mechanical stress between measurements. The X-ray tube has several target materials that are compatible and therefore adaptable to the respective application. The maximum tube voltage is 160 kV, a smallest focal spot possible can be realized by one micrometer in size. By the means of this focal spot, the maximum possible resolution of the scanner is limited to about one micrometer. Samples up to 5 cm expansion in each direction in space and up to 5 kg of weight can be measured. The X-ray tube used here is a transmission radiator. This offers the advantage of a large opening angle.

The detector has a field size of 10 x 10 cm. This is equivalent to 2300 x 2300 pixels, which are assigned with gray levels during the measurement. The rotation of the test sample throughout the measurement converts a two-dimensional information in a set of volume data. Thus, pixel will also get a depth information and are referred to as a voxel. The detector used can be classified as an indirect-converting detector. This means that the energy of the X-ray beam is converted into optical light and then detected by photodiodes.

To control the scanner, the software VOLEX, made by Fraunhofer Institute for Integrated Systems, is used. Evaluation of the recorded volume images were obtained by MAVI software of the Fraunhofer Institute for Technical and Industrial Mathematics. Close cooperation with the Fraunhofer Institutes present a continuous development and adaptation of software packages to the particular needs of particle technology.

The figures show the latest research to agglomerate, the insulated surface of a single granule and the pore structure of a fiber material.
 


Termine
University Course Drying 2020
30.03.2020 - 02.04.2020 in Magdeburg
University Course Fluidization Technology 2019
04.11.2019 - 07.11.2019 in Hamburg
News
Award for Maciej Jaskulski
Cluster WIGRATEC enters the next round
Arun S. Mujumdar Medal for Prof. E. Tsotsas
Award for best oral presentation
Award for best oral presentation for Christoph Neugebauer on Population Balance Modeling Conference 2018
Faculty Prize 2018
Award for Prof. E. Tsotsas
Honorary Professorship of UCTM, Sofia, for Prof. Tsotsas
University Course Drying 2018
19. March -- 22. March 2018 in Magdeburg
University Course Fluidization Technology 2017
6. - 9. November 2017 in Hamburg
Award on Conference
Best Research Award for Sayali Zarekar on IDS in Gifu, Japan
Award on Conference
Best Poster Award for Christian Rieck at PARTEC 2016 in Nuremberg, Germany
Award on Conference
Best poster award for Vesselin Idakiev at national conference
Award on Conference
Best Presentation Awards on Nordic Baltic Drying Conference 2015
ECCE 2015
27. September - 01. October 2015 in Nice, France
Granulation Workshop 2015
1st July - 3rd July 2015 in Sheffield, UK
University Course Drying 2016
29. March -- 01. April 2016 in Magdeburg
Extension of the Research Training Group 1554
Extension of the funding period for 4.5 years
Award on annual conference
Award for best poster presentation goes to Maryam Dadkhah
Modern Drying Technology Vol. 3
Prof. E. Tsotsas in CES Top 20 Reviewer 2010
Award on Asia Pacific Drying Conference
VDI Ehrenring für Jun.-Prof. Mirko Peglow
University Course Drying 2014
Fundamentals and Applications of Drying Technology