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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Title: Acoustic testing to enhance western forest values and meet customer wood quality needs

Source: Productivity of western forests : a forest products focus. Portland, OR : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2005]. General technical report PNW ; GTR-642.

Author(s)Carter, Peter; Briggs, David; Ross, Robert J.; Wang, Xiping

Publication Year: 2005  View PDF »

Category: Journal Articles

Abstract: Nondestructive testing (NDT) of wood products, such as lumber and veneer, for stiffness and strength evaluation has been proven and commercialized for many years. The NDT concept has been extended and commercialized in the Director HM-200 tool for testing logs in advance of processing so manufacturers can make more informed log purchases and better match logs to customer needs for product stiffness and strength. Further extension of the NDT concept to standing timber is a logical progression and a new commercial tool, the Director ST-300, has just been developed for this application. This paper describes operating principles of both tools and presents examples of their use with various species. The potential effects of wood density, moisture content, temperature, and age on results from these tools are also discussed.

Keywords: Nondestructive testing, tree quality, log quality, modulus of elasticity, stiffness, trees, forestry, wood quality, valuation, elasticity, logs, standing trees, wood strength, acoustic testing, log grading

File size: 240 kb(s)

This publication is also viewable on Treesearch:  view
RITS Product ID: 21403
Current FPL Scientists associated with this product (listed alphabetically)
Ross, Robert J.
Supervisory Research Gen. Engineer
Wang, Xiping
Research Forest Products Technologist

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