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): Daniel L. Schmoldt; Michael Morrone; John C. Duke
    Date: 1994
    Source: Review of Progress in Quantitative Nondestructive Evaluation 13B. 2161-2166.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (103 KB)

    Description

    Wooden pallets are the largest single use of sawn hardwood logs in the USA. Unfortunately, millions of pallets are discarded into landfills annually. High quality wooden pallets, on the other hand, promote longevity and re-use. To build durable pallets requires high quality parts. Manual grading and sorting of pallet parts is not feasible, however, so we are developing an automated inspection system. Ultrasonic sensing was selected for this application because (1) it is relatively inexpensive, (2) it can penetrate and characterize internal features of wooden specimens, and (3) its effectiveness has been demonstrated for certain features of wood. Nevertheless, flaws that degrade pallet parts must be characterized in unique ways that have not been previously evaluated quantitatively. Consequently, this study has sought: (1) to demonstrate that pallet part defects can be accurately circumscribed by ultrasonic testing, (2) to determine the ultrasonic parameters that are most effective for doing so, and (3) to specify what aspects of ultrasonic response signals best reflect defect size and location. Results from this work will be applied to the development of an industrial prototype that automatically detects defects and grades parts according to established visual grading rules.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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

    Schmoldt, Daniel L.; Morrone, Michael; Duke, John C., Jr. 1994. Ultrasonic Inspection of Wooden Pallet Parts for Grading and Sorting. Review of Progress in Quantitative Nondestructive Evaluation 13B. 2161-2166.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/281