Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Strength grading based on high resolution laser scanning: performance of a procedure newly approved for the European market
Linnaeus University, Faculty of Technology, Department of Building Technology. (Träbyggteknik)
Linnaeus University, Faculty of Technology, Department of Building Technology. (Träbyggteknik)ORCID iD: 0000-0002-8513-0394
2015 (English)In: Proceedings of the 19th International Nondestructive Testing and Evaluation of Wood Symposium / [ed] Ross, Robert J.; Goncalves, Raquel; Wang, Xiping, Madison, USA: USDA, United States Department of Agriculture, Forest Service, Forest Products Laboratory , 2015, Vol. 19, 232-240 p.Conference paper, Published paper (Refereed)
Abstract [en]

Strength grading of timber is necessary to ensure sufficient structural performance of the material, and machines based on different types of non-destructive measurements are available on the market. The purpose of this paper is to present results on an investigation of a new method and procedure for machine strength grading that is based on laser scanning and utilization of the tracheid effect, in combination with dynamic excitation and weighing. The investigated sample comprised more than 900 pieces of timber of Norway spruce (Picea abies) from Sweden, Norway and Finland. The coefficient of determination between the indicating property (IP) to bending strength and the measured bending strength was as high as R2 = 0.69, while the coefficient of determination between dynamic MOE and measured bending strength was R2 = 0.53. A comparison of the performance with what have been presented for machines that are based on X-ray in combination with dynamic excitation indicates that the new method/procedure will surpass such machines. 

Place, publisher, year, edition, pages
Madison, USA: USDA, United States Department of Agriculture, Forest Service, Forest Products Laboratory , 2015. Vol. 19, 232-240 p.
Series
General Technical Report, FPL-GTR-329
Keyword [en]
grading, laser scanning, Norway spruce, strength class, structural timber, tracheid effect, yield
National Category
Construction Management
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-53348OAI: oai:DiVA.org:lnu-53348DiVA: diva2:937262
Conference
19th International Nondestructive Testing and Evaluation of Wood Symposium, Rio de Janeiro, Brazil, 23-25 September, 2015
Funder
VINNOVA, 2011-03416Knowledge Foundation, 20110153
Available from: 2016-06-15 Created: 2016-06-10 Last updated: 2016-12-15Bibliographically approved

Open Access in DiVA

fulltext(360 kB)28 downloads
File information
File name FULLTEXT01.pdfFile size 360 kBChecksum SHA-512
fe27dcc1587c4e9ca95ba7e6a2cda20997f9b7992fdbea3c5079816030bcadfad6316eb2c8b3b93a996eddcca8dbc1aaedaa0d57f9fbaa73513883143539db45
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Olsson, AndersOscarsson, Jan
By organisation
Department of Building Technology
Construction Management

Search outside of DiVA

GoogleGoogle Scholar
Total: 28 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 76 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf