Search Results - "Collet, Robert"

Influence of wood anatomy on fiber orientation measurement obtained by laser scanning on five European species by Besseau, Benoît, Pot, Guillaume, Collet, Robert, Viguier, Joffrey

“…In order to obtain high production rates of sawn timber, the sawmilling industry can use laser scanning, allowing knot detection and machine strength grading…”
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Traceability and quality assessment of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) logs: the TreeTrace_Douglas database by Longuetaud, Fleur, Pot, Guillaume, Mothe, Frédéric, Barthelemy, Alexis, Decelle, Rémi, Delconte, Florian, Ge, Xihe, Guillaume, Grégoire, Mancini, Théo, Ravoajanahary, Tojo, Butaud, Jean-Claude, Collet, Robert, Debled-Rennesson, Isabelle, Marcon, Bertrand, Ngo, Phuc, Roux, Benjamin, Viguier, Joffrey

“…Key message The TreeTrace_Douglas database includes images and measurements at several stages of the processing of Douglas fir logs, from sawmill logyard to…”
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Modeling the Influence of Knots on Douglas-Fir Veneer Fiber Orientation by Frayssinhes, Rémy, Girardon, Stéphane, Denaud, Louis, Collet, Robert

“…This study presents a method for predicting the local fiber orientation of veneers made from peeled Douglas-fir logs based on the knowledge of the tree branch…”
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Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woods by Candelier, Kévin, Thévenon, Marie-France, Collet, Robert, Gérardin, Philippe, Dumarçay, Stéphane

“…Thermal modification of wood is a promising alternative to chemical and biocidal modification processes, increasing the biological durability and dimensional…”
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Vers une meilleure valorisation des chênes de qualité secondaire by Jean Croisel, Robert Collet

“…La valorisation des chênes de qualité secondaire est une préoccupation constante des politiques forestières. Trouver des débouchés pour cette ressource…”
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Mechanical characterization of heat-treated ash wood in relation with structural timber standards by Hannouz, Simon, Collet, Robert, Butaud, Jean-Claude, Bléron, Laurent, Candelier, Kévin

“…Heat treatment is an attractive method to enhance wood durability, and valorize local hardwood species with natural low durability. Yet no standard allows the…”
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Automatic measurement of wood fiber orientation and knot detection using an optical system based on heating conduction by Daval, Vincent, Pot, Guillaume, Belkacemi, Mohamed, Meriaudeau, Fabrice, Collet, Robert

“…In this paper, a new approach to computing the deviation of wood grain is proposed. To do this, the thermal conduction properties of timber are used (higher…”
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Assessment of bonding durability of CLT and glulam made from oak and mixed poplar-oak according to bonding pressure and glue type by Purba, Citra Yanto Ciki, Pot, Guillaume, Collet, Robert, Chaplain, Myriam, Coureau, Jean-Luc

“…•Bonding pressure and glue type influence the bonding quality of CLT and glulam.•CLT or glulam made from pure oak delaminated more than the mixed…”
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Effect of grain direction on cutting forces and chip geometry during green beech wood machining by Curti, Rémi, Marcon, Bertrand, Denaud, Louis, Collet, Robert

“…Proper valorization of the sawing wastes in industrial sawmills is a permanent issue with strong economic and environmental stakes. Most industrial sawmills…”
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Prediction of Oak Wood Mechanical Properties Based on the Statistical Exploitation of Vibrational Response by Faydi, Younes, Brancheriau, Loic, Pot, Guillaume, Collet, Robert

“…In the European Union, timber is used in structural applications and must be graded with a Conformité Européene (CE) mark. To achieve standard, machine…”
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Improving strength grading of timber by grain angle measurement and mechanical modeling by Viguier, Joffrey, Jehl, Arnaud, Collet, Robert, Bleron, Laurent, Meriaudeau, Fabrice

“…Timber strength grading has become a major issue in the European Union during the last years, due to the introduction of the Eurocode 5 and all its related…”
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Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woods by Candelier, Kévin, Thévenon, Marie-France, Collet, Robert, Gérardin, Philippe, Dumarçay, Stéphane

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A simple method to determine the diffusivity of green wood by Frayssinhes, Rémy, Girardon, Stéphane, Marcon, Bertrand, Denaud, Louis, Collet, Robert

“…Log temperature appreciably influences veneer quality during the rotary peeling process. The assessment of the thermal properties of green wood is complex and…”
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Wood machining with a focus on French research in the last 50 years by Thibaut, Bernard, Denaud, Louis, Collet, Robert, Marchal, Rémy, Beauchêne, Jacques, Mothe, Frédéric, Méausoone, Pierre-Jean, Martin, Patrick, Larricq, Pierre, Eyma, Florent

“…KEY MESSAGE : Wood machining is compulsory both for timber separation and the surfacing of wooden objects. The anisotropy, cellular nature and multi-scale…”
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Analysis of chip formation mechanisms and modelling of slabber process by Pfeiffer, Renaud, Collet, Robert, Denaud, Louis Etienne, Fromentin, Guillaume

“…During the primary transformation in wood industry, logs are faced with conical rough milling cutters commonly named slabber or canter heads. Chips produced…”
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Panel Shear of Plywood in Structural Sizes - Assessment Improvement Using Digital Image Correlation by Viguier, J., Marcon, B., Butaud, J. C., Denaud, L., Collet, R.

“…This paper introduces a new test configuration for the determination of panel shear properties in structural sizes. This original test configuration has been…”
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Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties by Marcon, B, Viguier, J, Candelier, K, Thevenon, MF, Butaud, JC, Pignolet, L, Gartili, A, Denaud, L, Collet, R

“…Plywood made of poplar are limited to indoor usages since poplar exhibits a rather low natural durability. Recently, wood heat treatments have been applied to…”
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Improving strength grading of lumber by grain angle measurement and mechanical modeling by Viguier, Joffrey, Jehl, Arnaud, Collet, Robert, Bleron, Laurent, Meriaudeau, Fabrice

“…Timber strength grading has become a major issue in the European Union during the last years, due to the introduction of the Eurocode 5 and all its related…”
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Evaluation of the visual stress grading standard on French Spruce (Picea excelsa) and Douglas-fir (Pseudotsuga menziesii) sawn timber by Roblot, Guillaume, Coudegnat, Damien, Bleron, Laurent, Collet, Robert

“…• In this paper an evaluation of the visual grading standard for softwood sawn timber was made. • In order to do so, visual grading according to EN 518 and…”
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Index of efficiency for strength-grading machines for solid wood by Roblot, Guillaume, Bleron, Laurent, Mothe, Frederic, Collet, Robert

“…The settings of strength-grading machine for structural pieces of wood are checked according to the EN 14081 standard. However, different machines have…”
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