Wood Material and Machining in Cluny - from low quality wood to Engineered Wood Products
About this good practice
The projects developed by the Wood team of the Campus Arts et Métiers de Cluny are directly linked to the process with local industrial and institutional partners. The projects presented at the meeting of 19/1 were:
• Valorisation of the local wood resource by manufacturing windows from quality oak type "firewood";
• Use of local oak for massive partitions (Cross Laminated Timber) used in the renovation of the Lycée des Métiers Camille Du Gast Chalon;
• Mixed wood-concrete bridge, in a short circuit, making it possible to reduce infrastructure renovation costs for communities by reducing the proportion of concrete and use of local wood..
To move up the scale of production by using these products adapted to the specificities of the resource, the sector needs all the players: researchers to imagine innovative and adapted products, manufacturers (many SMEs and very small businesses in the sector) to develop their manufacturing, the standards bodies to support the definition of the framework for the use of these products, the prescribers and of course consumers who can choose to invest in the local and circular economy and favor natural materials from their land with the cheapest products. The "Bois croisés de Bourgogne" association is working on this subject and promotes secondary quality Burgundy oaks by associating sawyers, manufacturers and specifiers, for example.
Resources needed
Wood Material and Machining Team LaBoMaP : 5AssistantProfessor; 1Researcher; 3engineer; 1assistantengineer; 1Technicalassistant; 6PhD,1post-docstudent.
Evidence of success
Low quality wood recovery to make Engineered Wood Products: Transformation process; grading and mechanical modeling; Oak CLT panel:1600m² panel in2017;Wood peeling process: Oak carpentry square LVL: windows; Scatter effect to make locale wood: maps properties+LVL made with local douglas; Engineered Wood Products to limit Carbone impact (industry, construction, transport,…):use of secondary quality wood in construction optimizing wood sorting+light packaging applications (substitute to plastics).
Potential for learning or transfer
Research axes developed in the LaBoMaP are related to the study of manufacturing processes by material removal and the relationship with the processed material. These investigations rely heavily on experimentation, with an increasing numerical part and concern mainly: The on-line control of processes (turning, milling, veneer cutting); The elaboration and the characterization of engineered wood products (glulam, structural composite lumber, structural panels). A large part of the wood resource could be used for applications in structures with specific care in sorting local woods which exhibit great natural variability. That is a shared objective for many local entities currently. The projects are linked with local industrial and institutional partners.