Skip to Main Content
Examining the Use of Internal Defect Information for Information-Augmented Hardwood Log BreakdownAuthor(s): Luis G. Occeña; Daniel L. Schmoldt; Suraphan Thawornwong
Source: Proceedings, ScanPro - 7th International Conference on Scanning Technology &Process Optimization for the Wood Products Industry. 8 pp. (Extended version of published article)
Publication Series: Miscellaneous Publication
PDF: View PDF (52 KB)
DescriptionIn present-day hardwood sawmills, log breakdown is hampered by incomplete information about log geometry and internal features. When internal log scanning becomes operational, it will remove this roadblock and provide a complete view of each logâs interior. It is not currently obvious, however, how dramatically this increased level of information will improve log breakdown by the sawyer. In this study, 3 hypothetical logs were generated (grades 1-3) and sawn via computer simulation using 6 established log sawing heuristics÷with and without the use of internal information. These same logs were also computer sawn by applying new heuristics that take advantage of complete, defect information. Following edging and grading operations the lumber values obtained from each log breakdown were compared. Preliminary results indicate that÷in the absence of an optimal log breakdown procedure÷increased information about internal log features can improve value recovery by 8.5% for grade #1 logs. Lumber values for lower grades do not change significantly, which suggests that choosing a breakdown pattern with high value recovery becomes very difficult when viewing logs with many internal defects.
- You may send email to firstname.lastname@example.org 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.
CitationOcceña, Luis G.; Schmoldt, Daniel L.; Thawornwong, Suraphan. 1997. Examining the Use of Internal Defect Information for Information-Augmented Hardwood Log Breakdown. Proceedings, ScanPro - 7th International Conference on Scanning Technology &Process Optimization for the Wood Products Industry. 8 pp. (Extended version of published article)
- Lumber value differences from reduced CT spatial resolution and simulated log sawing
- Development of a 3D log sawing optimization system for small sawmills in central Appalachia, US
- RAYSAW: a log sawing simulator for 3D laser-scanned hardwood logs
XML: View XML