Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (193 KB)

Title: Ultrasonic scanning for pallet part grading

Author: Kabir, Mohammed F.; Schmoldt, Daniel L.; Schafer, Mark E.; Araman, Philip A.;

Date: 2000

Source: Proceedings, 28th Annual Hardwood Symposium. 151-159.

Publication Series: Miscellaneous Publication

Description: Sorting and grading of wooden pallet parts are key factors for pallet manufacturing quality and pallet durability. The feasibility of ultrasonic scanning for defect detection in pallet manufacturing is examined in this report. Scanning was conducted by two pressure-contact rolling transducers in a pitch-catch arrangement. Pallet part deckboards were fed through the transducers and data were collected, stored, and processed with software written in the LabViewTM environment. Defects were characterized on the basis of time of flight, pulse energy, and pulse duration of the received ultrasonic signals. Values of the ultrasonic parameters changed rapidly in the region of defects. This relative change of parameter values with respect to values for clear wood can be used to locate, identify, and quantify various pallet part degrades. Results demonstrate that real-time, on-line inspection of wooden pallet parts is possible by ultrasonic scanning.

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



Kabir, Mohammed F.; Schmoldt, Daniel L.; Schafer, Mark E.; Araman, Philip A. 2000. Ultrasonic scanning for pallet part grading. Proceedings, 28th Annual Hardwood Symposium. 151-159.


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.