Ultrasonic Detection of Voids in Ceramic Composites
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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
Ceramic composites are intended to take advantage of the high temperature capabilities of ceramics while minimizing the disadvantages caused by their very brittle nature. The particular material under study consists of a Nicalona fiber weave reinforcing fabric in a silicon carbide matrix formed by a chemical infiltration process [1]. The process can result in high porosity (10–50%) and voids because of incomplete infiltration by the SiC-containing vapor. The basic objective of this NDE study is detection and characterization of the porosity and voids.