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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Determining the Moisture Gradient Profile of Wood Using the X-Ray Technique

Source: In: Proceedings of the 15th International Symposium on Nondestructive Testing of Wood, September 10-12, 2007; Duluth, Minnesota, pp. 207-210; 2008

Author(s)Cai, Zhiyong

Publication Year: 2008  View PDF »

Category: Conference Proceedings

Abstract: 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 ofmanufacturing. An innovative approach to nondestructively examine the moisture gradients ofdifferent 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.

Keywords:  moisture gradient, x-ray, moisture content, radiation, and density profile

File size: 411 kb(s)

Date posted: 07/06/2009
Current FPL Scientist associated with this product
Cai, Zhiyong
Supervisory Research Materials Engineer

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