Geometric reconstruction of 3D dendrite evolution from 2D transmission radiography data by a simple phase-field method


Geometric reconstruction of 3D dendrite evolution from 2D transmission radiography data by a simple phase-field method

Neumann-Heyme, H.

For the in-situ observation of dynamical processes radiographic imaging possess significant advantages over tomographic reconstruction in terms of e.g. time resolution and data handling. However, on the other hand essential spatial information is lost in the projected 2D image. The proposed method demonstrates, how in the case of continuously growing, coherent structures such as dendrites their time evolution can be utilized in recovering the 3D morphology. In addition, the reconstruction incorporates some prior knowledge including the smoothness and preferential growth directions of the interface. The capabilities of the method are assessed for different situations based on simulated experiments of dendritic growth. Finally, the reconstruction of evolving dendrites from flat sample synchrotron experiments is shown.

  • Lecture (Conference)
    55th Annual Technical Meeting of the Society of Engineering Science (SES2018), 10.-12.10.2018, Madrid, Spain

Permalink: https://www.hzdr.de/publications/Publ-28806
Publ.-Id: 28806