Publications Internationales
Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13
Browse
2 results
Search Results
Item Identification of elasticity modulus by vibratory analysis (Application to a natural composite : aleppo pine wood) = Identification des modules d’élasticité par analyse vibratoire (Application à un composite naturel : bois de Pin d’Alep)(EDP Sciences, 2018) Daoui, Abdelhakim; Zerizer, AbdellatifIn this paper, we present a method for the determination of the elasticity modulus in the vibratory domain of materials. This approach is based on research and interpretation of the spectrum of natural frequencies resulting from natural vibrations based on the theory of elastic beams. The tests consist of classical tests of longitudinal vibrations of natural composite beams (Aleppo pine wood), long enough to observe some natural frequencies. This identification method showed a good correlation between the theoretical and experimental values, notably the evaluation of the modal parameter for the case of the resonant frequencies and the identification of the modulus of elasticity of the materials usedItem 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 characteristics