Publications Scientifiques
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Item Determination of elasticity modulus of aleppo pine wood (pinus halepensis mill) with the ultrasound method(2008) Daoui, Abdelhakim; Zerizer, Abdellatif; Marchal, RemyWith a view to determining the mechanical properties - specifically the modulus of elasticity - of fibrous composites, the nondestructive methods present certain advantages. The ultrasound technique, based on measuring the propagation velocity of an impulse and considering the elasticity coefficients of the material, enabled us to deal with the study of a well-known local species, namely Aleppo pine (Pinus halepensis Mill.), with consideration of its physical parameters such as moisture and density. The mean goal of this step is to find correlations between the acoustic behavior of the material and its physical and mechanical characteristicsItem Mechanical behavior of multilayered sandwich panels of wood veneer and a core of cork agglomerates(Elsevier, 2014) Lakreb, Nadia; Bezzazi, Boudjema; Pereira, HelenaItem Mesure des efforts de défonçage et de la qualité finale en usinant en différents angles du fil : comparaison entre le pin douglas et le pin d'Alep = Measuring cutting effort and the surface quality obtained by routing across different wood grain angles : a comparison between douglas pine and aleppo pine(2012) Aknouche, Hamid; Goli, Giacomo; Marchal, Rémy; Sandak, Jakub; Zerizer, Abdellatif; Butaud, Jean-ClaudeItem Tool wear effect on cutting forces : in routing process of aleppo pine wood(2009) Aknouche, Hamid; Outahyon, A.; Nouveau, C.; Marchal, R.; Zerizer, A.; Butaud, J.C.This paper uses the cutting forces in a routing process of Aleppo pine wood to estimate the tool wear effect. The aim is to obtain further information about the tool wear effect by monitoring the variation in the cutting forces. A Kistler 9257A 3 axes Dynamometer was positioned under the workpiece to measure the cutting forces at frequencies up to 10,000 Hz. The experiments were carried out on a CNC routing machine RECORD1 of SCM. A carbide tool was used and the cutting parameters were fixed. The cutting speed was approximately 25 m/s. Dasylab software was used to capture the data. The results show a correlation between the tool wear and the computed angle ( ), between the tangential and cutting forces. In fact, the variation of ( ) is unstable in the running period and stable in the linear wear zone, included in the interval [−1.11◦; −1.10◦]. This study was performed as part of a development program for the Algerian wood industry, hence the selection Aleppo pine wood as the working material