Publications Scientifiques

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    Physical, mechanical and thermal properties of Spanish broom (Spartium junceum L.) fibre reinforced unidirectional polyester composites
    (SAGE, 2025) Djerad, Abdelkader; Benhamadouche, Lamia; Moussaoui, Nafissa; Bennouioua, Tahar; Jawaid, Mohammad
    This research analyses Spanish broom fibres (Spartium junceum L.) as possible reinforcement in polymer composites. It includes fibre extraction, characterisation, and composite construction. We extracted the Spanish broom fibres by water retting for 30 days, followed by hand washing and air drying. The fibres were spun into skeins using circular spinning. The fibres exhibited a density of 1.27 ± 0.03 g/cm3 and an average diameter of 170 ± 1.80 μm. The SEM investigation revealed a rough, uneven surface with microfibrils and spaces, that are typical of lignocellulosic fibres. Cellulose, hemicellulose, and lignin were detected using FTIR analysis. TGA revealed three weight-reduction phases, with the most significant cellulose degradation temperature around 319°C. XRD analysis revealed a 48.09% crystallinity index and 15.7 nm crystallite size. Single fibre tensile testing showed an elastic modulus of 20.51 ± 5.30 GPa, a fracture stress of 486.17 ± 129.16 MPa, and a fracture strain of 1.57 ± 0.43%. Spanish broom yarn and polyester resin were used to create unidirectional composites. Results indicate that both unreinforced polyester and SJL fibre-reinforced composites have enhanced mechanical characteristics, with maximum stress of 29.79 ± 0.79 MPa and Young’s modulus of 3.10 ± 0.25 GPa. This work highlights the significance of employing Spanish broom fibres as a green reinforcing material for polymer composites and suggests future research options
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    Damage crack growth detection of composite pipeline using NDT
    (Université M'Hamed Bougara Boumerdes : Faculté de Technologie : Département Génie Mécanique, 2021) Brihmat, Chahira; Lecheb, Samir; Chellil, A.; Safi, B.; Kebir, H.; Mechakra, H.; Tablit, B.
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    Elaboration Et Caractérisation Mécanique Quasi Statique D'un Composite Stratifie Jute/polyester
    (Université M'Hamed Bougara Boumerdes, 2014) Belkacemi, Cherifa; Bezzazi, Boudjema
    Les matériaux composites renforcés par des fibres végétales sont en cours de développement, leurs applications sont encore limitées mais ils sont amenés à jouer un rôle dans l’industrie future. Parmi les fibres naturelles, se trouvent les fibres végétales, matériaux de qualité, qui se fabriquent et se recyclent naturellement sur terre depuis très longtemps (matériaux biodégradables et renouvelables par culture (jute). Dans le but d’avoir un matériau le moins coûteux possible et le plus performant se qu’en intéresse à la caractérisation d’un nouveau matériau composite de type stratifié à matrice de résine polyester et renfort naturel (jute).Ce matériau composite est destiné à être utilisé dans les domaines de la construction et du transport. A l’heure actuelle, un certain nombre d’équipes de chercheurs caractérisent plusieurs types de fibres naturelles afin de faciliter leur introduction dans les matrices thermodurcissables pour la fabrication des matériaux composites. Avant l’élaboration des stratifiées nous avons caractérisé le jute par l’essai de traction après nous avons élaboré ces stratifiées sous vide, ces derniers sont découpées selon les normes.
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    Contribution to the design of a Parabolic trough collector with composite material using GRP pipes scrap
    (2017) Baali, Brahim; Benmounah, A.; Kari, D.; Mohammedi, K.
    The world revolution is moving towards a low-carbon and sustainable development. When environmental costs and considerations of security of supply are included, renewable energy becomes the alternative to be considered. Among renewable energies, Parabolic Trough Collector power plants constitute the biggest share of the installed concentrating solar power technology. The bearing structure is the most expensive part of a parabolic trough power plant. It has the function to carry the mirrors in the right position, to give stability to the troughs and to allow an exact Sun tracking. To fulfill these functions, structures must meet certain requirements. In particular, the stiffness requirements are very high. It’s obvious that an inappropriate carrier structure should involve additional material and manufacturing costs. Composite materials have great potential to be suited for development of renewable energy structures. It refers to any structure with two or more distinct materials that are combined to create an engineered product with properties greater than the sum of its parts. Glass reinforced polyester (GRP) with E-glass as the reinforcing fiber is the most common form of composite construction. GRP pipes scraps derived from cutting process can be revalorized and used in the bearing structure of a parabolic trough. The advantage of these materials lies in their high mechanical strength, corrosion resistance and low density compared to metals. Additionally, their high stiffness allows longer troughs so that the number of pylons and tracking units can be reduced, which reduces costs. The stiffness of GRP pipes combined with lightweight structure allows the use of weaker foundations and monitoring mechanisms. A lightweight structure is also less susceptible to deformations generated by its own weight. In addition, light structures reduce the energy demand for collector tracking.
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    Analysis of the bauschinger effect on a multilayer helicopter blade by XFEM simulation
    (Elsevier, 2017) Nour, Abdelkader; Gherbi, Mohamed Tahar; Tawfiq, Imad
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    Thermoelectrical characterization of new material based on PANI/zeolite HY composite, used for the detection of carbon dioxide
    (Nature Publishing Group, 2013) Safidine, Zitouni; Ghebache, Zahra; Lamouri, Saad
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    Preparation and characterization of foam glass based waste
    (2011) Stiti, N.; Ayadi, A.; Lerabi, Y.; Benhaoua, F.; Benzerga, R.; Legendre, L.
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    γ-Ray irradiation effect on GdBO3/silica:Ce3+ composite prepared by sol gel method
    (Elsevier, 2015) Ladjouzi, S.; Tala-Ighil, Razika; Iratni, A.; Izerrouken, M.; Guerbous, L.; Hadji, S.; Bensouici, F.; Pérez, F.J.
    Samples of GdBO3 doped with Ce3+ embedded in amorphous silica matrix were obtained by sol gel process and heat-treat at 1000°C for 2h in argon atmosphere. After elaboration, the samples were irradiated with γ-rays using cobalt (60Co) source in the dose range from 1 to 5kGy. The irradiation effect of γ-rays on structural and optical properties of the synthesized samples were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transforms infrared spectroscopy (FTIR) and photoluminescence spectroscopy. XRD and TEM-EDS results reveal that γ-ray irradiation reduces the crystallite size from 55nm to 30nm. It is found from FTIR study that the absorption bands intensity assigned to structural groups containing BO4 and BO3 units as well as the banding of Si-O-Si bond increases with γ-ray dose up to 4kGy. While photoluminescence measurements show that the emission bands attributed to the 5d→4F transition of Ce+3 ion intensity decreases, it is still significant even after irradiation to a dose of 5kGy. From this results it is concluded that the γ-ray irradiation up to a dose of 5kGy improve the structural and morphological quality of the synthesized GdBO3/silica: Ce3+ without altering significantly its luminescence properties.
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    Aeroelastic stability analysis of composite rotor blade
    (IEEE, 2013) Chellil, Ahmed; Settet, A.T.; Lecheb, Samir; Nour, Abdelkader