Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Adaptive control of green target sizes
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
2009 (engelsk)Inngår i: Proceedings of the 19th International Wood Maching Seminar / [ed] Handon Zhou; Nanfeng Zhu; Tao Ding, Nanjing: Nanjing Forestry University , 2009, s. 87-94Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In Swedish sawmills, about 70% of the total costs can be derived from raw-material costs. Hence, it is very important for sawmills to obtain the highest possible yield. The green target size is an important parameter that affects the yield. The nominal size, sawing allowance, shrinkage allowance and planer allowance add up to the green target size that is needed when sawing lumber. We have, in this work, studied whether it is possible to adaptively control the green target size by measuring log density and annual ring width with an X-ray Log Scanner online. Our hypothesis was that density and growth speed will affect how much every single piece of lumber will shrink.The results show that both density and annual ring width are rather weak variables for prediction of lumber shrinkage. The variable "distance to pith", i.e., where in the log cross-section a piece of lumber has been cut, has proved to be a significant variable for prediction of lumber shrinkage. The results show that the yield can be considerably improved by adapting the green target size to how far from the pith every piece of lumber is cut.

sted, utgiver, år, opplag, sider
Nanjing: Nanjing Forestry University , 2009. s. 87-94
HSV kategori
Forskningsprogram
Träteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-30310Lokal ID: 41249c90-a915-11df-a707-000ea68e967bISBN: 978-7-5023-6224-9 (tryckt)OAI: oai:DiVA.org:ltu-30310DiVA, id: diva2:1003537
Konferanse
International Wood Machining Seminar : 23/10/2009 - 23/10/2009
Merknad
Godkänd; 2009; 20100816 (andbra)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2017-11-25bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Personposter BETA

Grönlund, AndersFlodin, Jens

Søk i DiVA

Av forfatter/redaktør
Grönlund, AndersFlodin, Jens
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 55 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf