Phase-retrieval methods with applications in composite-material tomography

11th International Conference on X-ray Microscopy

Burvall, Anna^1 ; Larsson, Daniel H.^1 ; Lundström, Ulf^1 ; Stig, Fredrik^2 ; Hallström, Stefan^2 ; Hertz, Hans M.^1

Biomedical and X-ray Physics, Royal Institute of Technology (KTH), Albanova, SE-106 91 Stockholm, Sweden^1

Department of Aeronautical and Vehicle Engineering, Royal Institute of Technology (KTH), SE-100 44 Stockholm, Sweden^2

关键词: 3D weaves;    Edge enhancements;    General method;    In-line phase contrast;    Phase retrieval;    Reinforced composite materials;    Xray imaging;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/463/1/012015/pdf
DOI  :  10.1088/1742-6596/463/1/012015

来源: IOP

【 摘 要 】

In-line phase-contrast x-ray imaging is emerging as a method for observing small details when the contrast in absorption x-ray imaging is low. It gives images with strong edge enhancement, and phase retrieval is necessary to obtain quantitative thickness information. In particular for tomography, clarity can be enhanced by phase retrieval, as here demonstrated on a 3D-weave reinforced composite material. Seven suitable phase-retrieval methods are identified and integrated into a single method, where each version is marked by variations in particular steps. The general method and its variations are outlined and a comparison shows which methods are most suitable in different situations.