Skip to Main Content
Application of Ultrasound Nondestructive Evaluation to Grading Pallet PartsAuthor(s): Daniel L. Schmoldt; John C. Duke; Michael Morrone; Chris M. Jennings
Source: Proceedings, 9th International Symposium on Nondestructive Testing of Wood. 183-190.
Publication Series: Miscellaneous Publication
PDF: View PDF (408 KB)
DescriptionBuilding high quality pallets makes pallets easier to repair and increases their longevity. To obtain the high quality parts necessary to build durable pallets requires grading and sorting by 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. This study has sought: (1) to determine the ultrasonic parameters that are most sensitive to pallet part defects and (2) to specify what aspects of ultrasonic response signals best characterize defect size and location. Time of flight measurements appear reliable for delineating knots from clear wood. Also, preliminary indications are that peak amplitude may be sensitive to areas with splits/checks/shake. Results from this work and subsequent studies will be applied to the development of an industrial prototype that automatically detects defects and grades parts according to established visual grading rules.
- You may send email to email@example.com 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.
CitationSchmoldt, Daniel L.; Duke, John C., Jr.; Morrone, Michael; Jennings, Chris M. 1994. Application of Ultrasound Nondestructive Evaluation to Grading Pallet Parts. Proceedings, 9th International Symposium on Nondestructive Testing of Wood. 183-190.
- Ultrasonic Inspection of Wooden Pallet Parts for Grading and Sorting
- Ultrasonic Defect Detection in Wooden Pallet Parts for Quality Sorting
- Nondestructive evaluation of defects in wood pallet parts by ultrasonic scanning
XML: View XML