Microwave Imaging of Defects in Graphite Reinforced Composite Materials
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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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Abstract
In an effort to develop and evaluate new non-destructive evaluation (NDE) techniques for resin-matrix composites, we have investigated the feasibility of utilizing electromagnetic imaging for materials evaluation and has demonstrated the ability of existing electromagnetic imaging techniques to detect and locate flaws within carbon-epoxy samples. This paper presents the technical issues associated with using electromagnetic imaging for NDE measurements. These include the selection of test frequencies, sample orientation, signal processing techniques, and the impact of material properties on the measurement results. Measured results are presented for carbon-epoxy material samples.