| Although recent modeling efforts have improved understanding of chemical vapor infiltration (CVI) processing, CVI is still limited as a practical processing method due to the nonuniformity of the resulting matrix and high cost/long processing time. Better understanding of densification mechanisms is needed to overcome these shortcomings, specifically the optimum preform architecture(s) for rapid, uniform infiltration must be identified. The least ambiguous approach to learning how prior structure influences subsequent evolution is to examine the composite multiple times during the course of CVI; a high resolution, nondestructive technique is required.;X-ray tomographic microscopy (XTM), a high resolution version of medical CAT scanners, is used in this study to characterize the microstructural changes in a 0... |
