New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement

The grading of wood veneers according to their true mechanical potential is an important issue in the peeling industry. Unlike in the sawmilling industry, this activity does not currently estimate the local properties of production. The potential of the tracheid effect, which enables local fiber ori...

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Main Authors: Robin Duriot, Guillaume Pot, Stéphane Girardon, Benjamin Roux, Bertrand Marcon, Joffrey Viguier, Louis Denaud
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/12/9/1264
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author Robin Duriot
Guillaume Pot
Stéphane Girardon
Benjamin Roux
Bertrand Marcon
Joffrey Viguier
Louis Denaud
author_facet Robin Duriot
Guillaume Pot
Stéphane Girardon
Benjamin Roux
Bertrand Marcon
Joffrey Viguier
Louis Denaud
author_sort Robin Duriot
collection DOAJ
description The grading of wood veneers according to their true mechanical potential is an important issue in the peeling industry. Unlike in the sawmilling industry, this activity does not currently estimate the local properties of production. The potential of the tracheid effect, which enables local fiber orientation measurement, has been widely documented for sawn products. A measuring instrument exploiting this technology and implemented on a peeling line was developed, enabling us to obtain the fiber orientation locally which, together with global density, allowed us to model the local elastic properties of each veneer. A sorting method using this data was developed and is presented here. It was applied to 286 veneers from several logs of French Douglas fir, and was compared to a widely used sorting method based on veneer appearance defects. The effectiveness of both grading approaches was quantified according to mechanical criteria. This study shows that the sorting method used (based on local fiber orientation and average density) allows for better theorical quality discrimination according to the mechanical potential. This article is the first in a series, with the overall aim of enhancing the use of heterogeneous wood veneers in the manufacturing of maximized-performance LVL by veneer grading and optimized positioning as well as material mechanical property modelization.
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spelling doaj.art-6255637524cd4ca5aff4a694f24e81c82023-11-22T13:08:32ZengMDPI AGForests1999-49072021-09-01129126410.3390/f12091264New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation MeasurementRobin Duriot0Guillaume Pot1Stéphane Girardon2Benjamin Roux3Bertrand Marcon4Joffrey Viguier5Louis Denaud6Arts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, UBFC, HESAM Université, F-71250 Cluny, FranceThe grading of wood veneers according to their true mechanical potential is an important issue in the peeling industry. Unlike in the sawmilling industry, this activity does not currently estimate the local properties of production. The potential of the tracheid effect, which enables local fiber orientation measurement, has been widely documented for sawn products. A measuring instrument exploiting this technology and implemented on a peeling line was developed, enabling us to obtain the fiber orientation locally which, together with global density, allowed us to model the local elastic properties of each veneer. A sorting method using this data was developed and is presented here. It was applied to 286 veneers from several logs of French Douglas fir, and was compared to a widely used sorting method based on veneer appearance defects. The effectiveness of both grading approaches was quantified according to mechanical criteria. This study shows that the sorting method used (based on local fiber orientation and average density) allows for better theorical quality discrimination according to the mechanical potential. This article is the first in a series, with the overall aim of enhancing the use of heterogeneous wood veneers in the manufacturing of maximized-performance LVL by veneer grading and optimized positioning as well as material mechanical property modelization.https://www.mdpi.com/1999-4907/12/9/1264laminated veneer lumberveneer quality sortinglocal fiber orientationDouglas fir
spellingShingle Robin Duriot
Guillaume Pot
Stéphane Girardon
Benjamin Roux
Bertrand Marcon
Joffrey Viguier
Louis Denaud
New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
Forests
laminated veneer lumber
veneer quality sorting
local fiber orientation
Douglas fir
title New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
title_full New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
title_fullStr New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
title_full_unstemmed New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
title_short New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurement
title_sort new perspectives for lvl manufacturing from wood of heterogeneous quality part 1 veneer mechanical grading based on online local wood fiber orientation measurement
topic laminated veneer lumber
veneer quality sorting
local fiber orientation
Douglas fir
url https://www.mdpi.com/1999-4907/12/9/1264
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