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    Author(s): Zhiyong Cai
    Date: 2007
    Source: Proceedings of 15th International Symposium on Nondestructive Testing of Wood, Sept. 10-13, 2007, Duluth, MN. [S.l. : s.n.], 2007.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (252 KB)

    Description

    Moisture gradients in wood are known to affect the internal stresses that could cause dimensional changes and defects. Severe deformation of finished products has the potential to damage a manufacturer’s reputation and significantly increase the cost of manufacturing. An innovative approach to nondestructively examine the moisture gradients of different wood species using vertical density profiles from a commercial X-ray based density profiler was described and illustrated. The results indicate that the estimated moisture gradients by the X-ray technique matched well with the actual moisture gradients. It is expected that the new method will provide accurate and prompt information about moisture transfer/movement that will help optimize manufacturing processes.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Cai, Zhiyong. 2007. Determining moisture gradient profile using X-Ray technique. Proceedings of 15th International Symposium on Nondestructive Testing of Wood, Sept. 10-13, 2007, Duluth, MN. [S.l. : s.n.], 2007.

    Keywords

    Nondestructive, moisture gradient, wood composite, wood density, wood defects, drying, wood moisture, composite materials, moisture, x-rays, nondestructive testing, wood drying, moisture content, hygroscopicity

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