Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Olof Broman"'
Publikováno v:
Journal of Wood Science, Vol 68, Iss 1, Pp 1-11 (2022)
Abstract As the sawmill industry is moving towards thinner bandsaws for higher yields, it is important to study the cutting force in more detail. The cutting force can be split into two zones. Zone I concerns the force on the major cutting edge as we
Externí odkaz:
https://doaj.org/article/a8df97c77caa43aa864badedca00fe8b
Publikováno v:
BioResources, Vol 11, Iss 4, Pp 9560-9571 (2016)
This study investigated the effect of the positioning of the log before sawing on the volume yield of sawn timber from tropical hardwood species. Three positioning parameters were studied, the offset, skew, and rotation, combined with two sawing patt
Externí odkaz:
https://doaj.org/article/61d60b7e537741b99ced94bf4bd69596
Publikováno v:
BioResources, Vol 10, Iss 4, Pp 7640-7652 (2015)
To increase understanding of breakdown strategies for Mozambican timber, simulations were carried out using different sawing patterns that can be alternatives to the low degree of refinement performed for export today. For the simulations, 3D models
Externí odkaz:
https://doaj.org/article/f2148aeb7d184eeabf1b42d73ae821b8
Publikováno v:
BioResources, Vol 10, Iss 1, Pp 1477-1486 (2015)
Sawing small diameter logs results in lower yield compared to sawing large diameter logs. This is due to geometry; fitting rectangular blocks inside an approximately cylindrical shape is more difficult for small than for large diameters. If small dia
Externí odkaz:
https://doaj.org/article/6b8b1b0d342f4ea6808d9f384894c6e7
Publikováno v:
BioResources, Vol 9, Iss 4, Pp 7593-7605 (2014)
In this paper, a portable scanner to determine the 3D shape of logs was evaluated and compared with the measurement result of a computer tomography scanner. Focus was on the accuracy of the shape geometry representation. The objective is to find a fe
Externí odkaz:
https://doaj.org/article/7ab615f985f74dcd893f4ed25c90949e
Autor:
Maria Larsson, Takashi Ijiri, Hironori Yoshida, Johannes A. J. Huber, Magnus Fredriksson, Olof Broman, Takeo Igarashi
Publikováno v:
ACM Transactions on Graphics. 41:1-10
We present a procedural framework for modeling the annual ring pattern of solid wood with knots. Although wood texturing is a well-studied topic, there have been few previous attempts at modeling knots inside the wood texture. Our method takes the sk
Autor:
Kari Hyll, Sheng Joevenller, Henrik Svennerstam, Maria Nordström, Olof Broman, Johan Oja, Dick Sandberg
Publikováno v:
Wood Material Science & Engineering. 17:1022-1024
Computed tomography (CT) scanning of logs makes appearance-grading virtual sawn timber possible before the log is sawn. A CT-scanner can measure the knot structure inside a scanned log, inferring how to saw the log. The knot structure of virtual sawn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49b5aefaba91d7b083f827d1f6e31418
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84736
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84736
A procedure is presented to generate 3D FE models of timber boards based on CT scans. Theboards were tested in four-point bending tests until failure and the local displacement in the pure bendingzone was recorded. The CT scans were treated as 3D ima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1762656a3892e44a8358e64f2503349d
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83483
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83483
Using multivariate partial least squares regression (PLS) to perform visual quality grading of sawn timber requires a training set with known quality grades for the training of a grading model. This study evaluated the grading accuracy of an independ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90d961ed32fe63fbab27895aed567682
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-82324
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-82324