Online measurement of veneer lathe checks
Communication avec acte
The present work deals with online lathe checks measurement. It is one of the most critical defects of veneer (leading to handling difficulties, excess of glue consumption, poor veneer surface quality, etc.). It could be characterized by lathe checks depth or frequency but these indicators require tedious measurements of the veneers. The objective of this work is to get an estimation of veneer lathe check indicators from vibratory and acoustical measurements. This approach is inspired by operators who are able to adapt the lathe settings “at the noise”. Acoustic and vibratory measurements during the peeling process were performed. Several signal processing techniques giving a spectral representation of sensors measurements are compared. Finally, an analysis of spectrum is proposed to measure the average lathe check frequency of the veneer during the process.
Showing items related by title, author, creator and subject.
Communication avec acteBAILLERES, Henri; DENAUD, Louis; BUTAUD, Jean-Claude; MCGAVIN, Robert (FPInnovations, 2015)A substantial area of senile coconut palms exists within the Asia-Pacific region. Once coconut palms become over-mature and senile, their production of traditional products, such as coconuts, significantly decreases, ...
Article dans une revue avec comité de lectureBAILLERES, Henri; DENAUD, Louis; BUTAUD, Jean-Claude; MCGAVIN, Robert (North Carolina State University, 2015)Substantial quantities of senile coconut palms are present in plantations within the Asia-Pacific region. Once coconut palms become over-mature, their production of traditional products, such as coconuts, significantly ...
Article dans une revue avec comité de lecturePAŁUBICKI, Bartosz; MARCHAL, Rémy; BUTAUD, Jean-Claude; DENAUD, Louis; BLERON, Laurent; COLLET, Robert; KOWALUK, Grzegorz (Springer Verlag, 2010)In the present paper, a novel method for veneer checks measurement and description based on digital image analysis is evaluated. According to this method, the camera is located sideways to the veneer allowing for viewing ...
Panel Shear of Plywood in Structural Sizes - Assessment Improvement Using Digital Image Correlation Article dans une revue avec comité de lectureVIGUIER, Joffrey; MARCON, Bertrand; BUTAUD, Jean-Claude; DENAUD, Louis; COLLET, Robert (Society for Experimental Mechanics, 2021)This paper introduces a new test configuration for the determination of panel shear properties in structural sizes. This original test configuration has been successfully applied to calculate the shear properties of beech ...
Lathe check development and properties: effect of log soaking temperature, compression rate, cutting radius and cutting speed during peeling process of European beech (Fagus sylvatica L.) veneer Article dans une revue avec comité de lectureROHUMAA, Anti; VIGUIER, Joffrey; GIRARDON, Stéphane; KREBS, Michael; DENAUD, Louis (Springer Verlag, 2018)The depth of lathe checks and integrity of veneer have been shown to be critical factors affecting the bonding process but also affecting the mechanical properties of veneer-based products. This study shows how beech (Fagus ...