Segmentation and Density-Evaluation of Fiber-Reinforced Materials by Dual-Energy Computerized Tomography

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1996
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Hassler, U.
Rizo, P.
Garnero, L.
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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This work has been prepared within the Brite-Euram project “DUALETO”, whose purpose is the development of a high-resolution Dual-Energy computerized tomography system (DE-CT). It is dedicated to non-destructive inspection of fiber-reinforced ceramic parts. The DE-measurement will be acquired simultaneously by an energy- and position-sensitive line detector. Using an appropriate calibration function, these DE-acquisitions are used to calculate the distributions of mass density of the ceramic’s two components and with them, the volumic fraction (VF) of fibers in the matrix material. Due to several reasons, these density data are very noisy. This paper presents a method for obtaining mass density data with a lower level of noise. For this, structural information about object, defects and bundles of fibers are derived from the low-energy measurement and stored in label images. Structure information is then used to perform a non-linear filtering on mass density data, in order to estimate the volumic fraction.

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Mon Jan 01 00:00:00 UTC 1996