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Article: Evaluation of carbon-based surfaces.(Testing and measurement)
- Article from:
- Advanced Composites Bulletin
- Article date:
- October 1, 2006
CopyrightCOPYRIGHT 2006 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Researchers at Wichita State University's National Institute for Aviation Research, Kansas, USA, have developed a non-destructive method for the evaluation of moisture content in carbon-based composites prior to adhesive bonding.
Fibre-reinforced plastics absorb water in their resin phase, mostly during use or in storage under a humid atmosphere. Before a strong bond can be formed, the composite must be thoroughly dried.
Water dissolved in plastic produces a unique and reproducible signature in the near-infrared (IR) spectrum. For this reason, the researchers investigated a near IR integrating sphere module, built for use with a research-grade IR ...