Remy Frayssinhes, a doctoral student atLaBoMaP, defended his thesis on Tuesday, December 8, 2020, on "the optimization of Douglas fir peeling parameters and modeling of the mechanical properties of LVL panels incorporating silvicultural data." This research earned him his doctorate. Watch a replay of his thesis defense.
Congratulations to Rémy Frayssinhes, who earned his doctorate following research conducted with the Bois duLaBoMaP team, one of 15 Arts et Métiers research laboratories located on the Arts et Métiers campus Arts et Métiers Cluny.
JURY MEMBERS
- Rapporteurs:
Ms. Sandrine BARDET, Associate Professor (HDR),LMGC, Montpellier
Mr. Jean-Michel LEBAN, Research Director,INRAE, Nancy
- Examiners
Mr. Laurent BLERON, Professor,ENSTIB, University of Lorraine
Ms. Évelyne TOUSSAINT, Professor,Pascal Institute, Clermont Auvergne University
Mr. Robert COLLET, Associate Professor (HDR), LaBoMaP, Arts et Métiers
Mr. Stéphane GIRARDON, Senior Lecturer, LaBoMaP, Arts et Métiers
- Guests
Ms. Christine DELEUZE, Doctor,ONF, Dole
Mr. Louis DENAUD, Associate Professor (HDR), LaBoMaP, Arts et Métiers
SUMMARY
Douglas fir was planted extensively in mainland France around 50 years ago. The proportion of large timber will increase in the coming years as the stands age. Some of this resource will not meet the supply requirements of the largest sawmills and will lose value. A wood processing method well suited to the recovery of this resource is peeling. In France, Douglas fir is not a peeled species due to its recent maturity. Veneers can be used to make plywood panels, but also LVL. A study of the optimal peeling parameters was necessary in order to obtain high-quality veneers. Next, a model taking into account the silvicultural data of a stand was developed to estimate the mechanical properties of LVL beams. It made it possible to predict the mechanical properties of beams made from trees from three plots with "contrasting" silvicultural itineraries. A simulation of pruning these trees at 20 years of age shows the value of using this decision-making tool for forest stand management.
Watch the defense in REPLAY
