Qualitative and Quantitative X-ray Tomography of Filter Macrostructures and Functional Components

This chapter focuses on the application of a conventional attenuation based X-ray computed tomography for the investigation of porous and dense structural components in different stages of the manufacturing process and loading. Firstly, the image acquisition process, image processing and qualitative evaluation are introduced using reticulated foam filter and a nozzle component as examples. Secondly, the quantification strategies of the reconstructed volume data involving segmentation of targeted features and its geometrical characterization are presented. Thirdly, the issue of ex-situ investigations is outlined and discussed using differently sized carbon-bonded alumina filters subjected to thermomechanical loading. Fourthly, the interrupted in-situ compression testing of glass foam structures is demonstrated. Finally, the benefits and limitations of conventional X-ray computed tomography as analysis method for porous and dense materials are emphasized.