Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Hongmei Gu; Timothy M. Young; William W. Moschler; Brian H. Bond
    Date: 2004
    Source: Forest products journal. Vol. 54, no. 11 (Nov. 2004): pages 65-70.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (142 KB)

    Description

    Excessive variability in the final moisture content (MC) of hardwood lumber may have a significant impact on secondary wood processing and final product performance. Sources of final MC variation during kiln- drying have been studied in prior research. A test examining the final MC of red oak (Quercus spp.) and yellow-poplar (Liriodendron tulipifera) lumber after kiln-drying was conducted to obtain empirical knowledge of the effects from anatomical structures and lumber thickness A 23 fixed- effects linear statistical model was used to examine MC changes and the effects that growth rate. thickness. and wood type have on MC variability of red oak and yellow-poplar 4/4 lumber during the kiln-drying process. Growth rate was comprised of “fast” and “slow” levels. Lumber thickness had “thin” and “thick” levels, and wood type had heartwood and sapwood levels. The entire experiment was duplicated to improve the inference of experimental results. Variability in the MC of red oak lumber steadily increased during kiln-drying before the equalizing treatment. and was significantly reduced after equalization. This empirical study may suggest that the equalization treatment is an important step in the kiln-drying of red oak lumber. Variability in the MC of yellow-poplar declined during the entire kiln-drying process. There was statistical evidence in the duplicate experiments that suggested that the wood type (heartwood or sapwood) had a significant effect on red oak final MC. There was no statistical evidence to suggest that the three factors studied had an effect on the final MC of yellow-poplar lumber.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Gu, Hongmei; Young, Timothy M.; Moschler, William W.; Bond, Brian H. 2004. Potential sources of variation that influence the final moisture content of kiln-dried hardwood lumber. Forest products journal. Vol. 54, no. 11 (Nov. 2004): pages 65-70.

    Keywords

    Liriodendron tulipifera, wood anatomy, wood moisture, lumber drying, moisture content, sapwood, kiln drying, yellow-poplar, red oak, hardwoods, thickness of lumber, heartwood

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/25152