Test equipmentApplication of a microfocus X-ray imaging apparatus to the study of cellular polymers

This paper describes an X-ray based non-destructive imaging method to study polymer foams. A broad description of the main hardware elements - tube and detector specially adapted for low X-ray absorbing materials - is provided. Recommendations on the optimum imaging parameters for polymer foams are also reported. The mathematical equations and methodology to obtain quantitative information from the images are extensively explained, providing further discussion on the limitations and resolution of the technique. Some of the main potential applications of the technique are also summarised.