Time-resolved in situ tomography for the analysis of evolving metal-foam granulates

An experimental setup has been developed that allows for capturing up to 25 tomograms   s − 1 using the white X-ray beam at the experimental station EDDI of BESSY II, Berlin, Germany. The key points are the use of a newly developed, precise and fast rotation stage, a very efficient scintillator and a fast CMOS camera. As a first application, the foaming of aluminium alloy granules at 923   K was investigated in situ. Formation and growth of bubbles in the liquid material were observed and found to be influenced by the limited thermal conductivity in the bulk granules. Changes that took place between two tomographic frames separated in time by 39   ms could be detected and analysed quantitatively.

Source: Journal of Synchrotron Radiation - August 3, 2018 Category: Physics Authors: Garc í a-Moreno, F. Kamm, P.H. Neu, T.R. Banhart, J. Tags: time-resolved tomography in situ tomography dynamic processes metal-foam granulates short communications Source Type: research