NAFISSA Moussaoui

Djaalab Ahmed Yacine , Simohamed Khaled

conception, simulation et realisation d'un enjoliveur en biocomposite dans l'industrie automobile

مقري سلطانة , علواني هديل

Etude et réalisation d’une fileuse textile

Smaini Ossama , Reguig Saida

confection d'un fil à base de fibre végitale (Genet d'espagne)

ذبيح حمزة ش.د , جوبرعبدالله, مرزوقي نبيل

Study and Creation of carding machine for natural fiber

khatout said

Concetion d'un dispositif de filage textile

Hadj Laroussi Mohammed Ilyas

MECHANICAL BEHAVIOR OF BIOCOMPOSITES: NUMERICAL APPROACH

Bensaoucha Ammar , Aichouche Imadeddine

Conception et simulation des mécanismes aux interfaces piéces-outil-copeaux de l'acier XC48

Madani Ilyes , Khattout Said

Etude et conception des dispositifs de filage et de tissage

CHAARAOUI TAREQ , Difli okba

L'étude de l'influence des traitements chimique sur l'interface des composites fibre matrice

Hallab, chaima , Ferhati, djahida

Etude de l'effet des traitements Chimiques sur l'adhésion des composites fibres naturelles polymère

BOUZIDI, MARWA , KEBAILI, KARIMA

L’ETUDE DE L’INFLUENCE DES TRAITEMENTS CHIMIQUE SUR L’INTERFACE DES COMPOSITES FIBRE/MATRICE

This study presents a numerical investigation of mixed convective heat transfer in a heat sink equipped with circular perforated pin fins and cooled by different nanofluids. Three types of nanoparticles TiO2, Al2O3, and Cu were dispersed in water at volumetric concentrations ranging from 2% to 10%. The simulations were conducted for Reynolds numbers between 100 and 400 to ensure laminar flow conditions, with the corresponding Richardson number in the range of 1 ≤ Ri ≤ 22. The three-dimensional steady-state Navier–Stokes and energy equations were discretized using the finite volume method and solved iteratively through the SIMPLE algorithm. The results indicate a significant enhancement in heat transfer performance when nanofluids are used compared to pure water. The improvement becomes more pronounced with increasing Reynolds number and decreasing nanoparticle concentration. Among the nanofluids studied, Cu exhibited the highest average Nusselt number, followed by Al2O3 and TiO2. Although the addition of nanoparticles slightly increases both the friction factor and the required pumping power, the overall heat transfer enhancement demonstrates that nanofluids are effective coolants for improving the thermal performance of perforated pin-fin heat sinks under mixed convection conditions Keywords – Nanofluids; Mixed convection; Heat sinks; Perforated pin fin; Finite volume method ; Computational fluid dynamic;

Citation

FATIMAZOHRA Bakhti , Nafissa Moussaoui , Souad BENKHERBACHE , ,(2025-10-29), Numerical study of thermal and hydraulic behavior of nanofluids in perforated pin fin heat sinks,1st National Seminar on Structural Mechanics and Materials (SNMSM’25) M'Sila-Algeria,M'Sila-Algeria

Ce travail explore la caractérisation mécanique et micromécanique d’un biocomposite innovant à base de fibres végétales incorporées dans une matrice thermodurcissable. L’étude vise à évaluer non seulement les performances mécaniques globales du matériau, mais également les phénomènes à l’échelle microscopique qui influencent son comportement. Des essais mécaniques classiques tel que traction a permis de déterminer les propriétés structurales du composite, tandis que des analyses micromécaniques, telles que microgouttes a révélé des informations clés sur l’interface fibre/matrice, la distribution des contraintes et les mécanismes de rupture. Les résultats montrent que l’adhésion interfaciale, le traitement des fibres, ainsi que leur orientation et leur taux de renfort jouent un rôle crucial dans la performance du matériau. Ce biocomposite présente ainsi un excellent compromis entre propriétés mécaniques, légèreté et durabilité environnementale, faisant de lui une alternative prometteuse aux composites synthétiques dans des applications techniques et écoconçues. Keywords— fibre végétale; IFSS ;biocomposite; test micromécanique; l’adhésion.

Citation

Nafissa Moussaoui , FATIMAZOHRA Bakhti , ,(2025-10-29), Caractérisation mécanique et micromécanique d'un composite( fibre végétale/résine thermodurcissable),1er National Seminar on structural mechanics and materials(SNMSM'25),University of M'sila

This study presents a mathematical model to describe the growth of non-crystalline films in semiconductor materials resulting from mild-energy ion implantation. The model is applicable across both lower and higher ion dose ranges, with the damage distribution depth approximated by a Gaussian function. The growth of the amorphous layer and the formation of voids are analyzed in relation to ion dose and amorphization threshold. The model employs a multi-layer framework: a 3-layer model for low ion doses and a 4-layer model for higher ion doses, accounting for the transition to void formation above a critical dose. The ion implantation process leads to the displacement of lattice atoms, with a corresponding increase in point defects that eventually relax into an amorphous state. The amorphization dose, critical energy density, and damage depth are key parameters in the model. Additionally, the model provides a comprehensive mathematical description of the energy distribution and the resulting damage zone, extending into void regions at higher ion doses. The model’s predictions are useful for understanding and optimizing ion implantation processes for semiconductor surface treatments and other applications. The mathematical framework is validated against experimental data, providing insights into ion-target interactions and damage evolution. Keywords: Mathematical Modelling of Ion Implantation; Amorphous Layer Growth; Semiconductor Surface Treatment; Ion Dose; Ion-Target Interactions.

Citation

Nafissa Moussaoui , ,(2025-09-03), A mathematical approach to growth of non-crystalline films induced by mild energy ion implantation,the 9th International conference of mathematical Science(ICMS2025),Maltepe university Istanbul Turkey

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.

Citation

Nafissa Moussaoui , , (2025-05-29), Physical, mechanical and thermal properties of Spanish broom (Spartium junceum L.) fibre reinforced unidirectional polyester composites, journal of Industrial Textiles, Vol:55, Issue:, pages:pages:15280837251348664, Sage Journal

This study conducts a 3D numerical investigation into the heat transfer performance of hybrid nanofluids flowing through the tube of a hybrid photovoltaic/thermal (PV/T) solar panel, employing Fluent 6.3.26 for the simulations. The hybrid nanofluids consist of CuO-Cu/water and CuO-Al2O3 /water suspensions, with their properties varying based on the type, size, and concentration of nanoparticles. The analysis focuses on the Reynolds number, thermal efficiency, and the temperature distribution across the PV/T components as the primary dependent variables.

Citation

Souad BENKHERBACHE , FATIMAZOHRA Bakhti , Nafissa Moussaoui , ,(2025-05-12), 3D Numerical Study of Heat Transfer Enhancement in a Hybrid PV/T Solar Panel Using CuO-Cu/Water and CuO-Al2O3 /Water Nanofluids,FIRST INTERNATIONAL CONFERENCE ON GREEN ENGINEERING,MOHAMED EL BACHIR EL IBRAHIMI UNIVERSITY OF BORDJ BOU ARRERIDJ, ALGERIA

Cylindro-Parabolic Collector (CPC) is essential in concentrated solar power (CSP) systems, and improving its thermal efficiency is a key research focus. This study explores the combined effects of modifying the absorber tube geometry and using advanced heat transfer fluids on CPC performance. The absorber tube incorporates twisted tape inserts, acting as turbulators to increase fluid turbulence and enhance heat transfer. Two heat transfer fluids are tested: Syltherm800, a synthetic fluid, and Syltherm800+Al2O3, a nanofluid enhanced with Al2O3 nanoparticles (2%-8%) to improve thermal conductivity. The performance of CPCs with twisted tape (CTT) is compared to a plain collector tube (PC). Results show that the twisted tape, combined with Syltherm 800+Al2O3, significantly enhances heat transfer and thermal efficiency. The twisted tape improves turbulence, and the nanofluid increases the fluid's thermal conductivity. These modifications lead to higher outlet temperatures and better overall performance. The findings demonstrate that optimizing both absorber tube geometry and heat transfer fluids can significantly improve CPC thermal efficiency, contributing to more effective solar energy harvesting.

Citation

FATIMAZOHRA Bakhti , Nafissa Moussaoui , Souad BENKHERBACHE , ,(2025-05-12), Thermal efficiency improvement of a cylindrical-parabolic collector with Syltherm 800/Al2O3 nanofluid,The First International Conference on Green Engineering (ICGE-25),Bordj Bou Arreridj-Algeria

This study examines how the thickness of gallium arsenide (GaAs) thin films influences the photovoltaic performance of amorphous silicon (a-Si)-based heterojunction solar cells using numerical simulations conducted with AMPS-1D software. The GaAs film thickness was systematically varied between 25 nm and 100 nm to determine the optimal configuration for maximum efficiency. The device architecture consists of an amorphous silicon absorber layer (a-Si(p)) at an optimal thickness of 2500 nm, an amorphous silicon buffer layer (a-Si(n)) fixed at 50 nm, and a zinc oxide (ZnO) transparent conductive window layer of 25 nm thickness. Critical performance metrics, including fill factor (FF), conversion efficiency (η), short-circuit current density (Jsc), and open-circuit voltage (Voc), were analyzed to evaluate the cell's performance. The simulation results demonstrated that adjusting the GaAs film thickness significantly influenced the device parameters, identifying an optimal thickness of 100 nm, which gave us the best efficiency by effectively balancing enhanced current generation with minimized voltage losses. After optimization, the device achieved Voc = 0.78 V, Jsc = 37.88 mA/cm², FF = 0.85, and an efficiency (η) of 25.33%. The optimization considered variations in both temperature and wavelength, underscoring the importance of GaAs film thickness in achieving optimal photovoltaic performance and providing valuable insights for the development of advanced heterojunction solar cells. Keywords— a solar cells; GaAs; heterojunction; a-Si; AMPS-1D; thickness.

Citation

Nafissa Moussaoui , FATIMAZOHRA Bakhti , Souad BENKHERBACHE , ,(2025-05-12), Effect of GaAs thin film thickness on the performance of a (a-Si)-based heterojunction solar cell by simulation,the first international conférence on Green Engineering (IGGE-25),Bordj Bou Arreridj

The plate solar collector is a widely utilized technology for capturing solar energy to heat fluids in low to medium-temperature applications such as domestic water heating and industrial processes. A key component in improving thermal efficiency is the absorber tube, where the heat transfer from solar radiation to the working fluid takes place. Research efforts focus on enhancing heat transfer by geometrically modifying the absorber tube. This study examines the hydrothermal performance of a flat plate solar collector equipped with twisted tape turbulators at various twist ratios (δ = 3, 4, 5, 6), compared to a plain tube collector. The analysis, which uses air as the working fluid, explores the effect of Reynolds number (Re = 200–2000) on performance metrics such as heat transfer, friction factor, and pumping power. The numerical results reveal that the collector with twisted tape (CTT) outperforms the plain collector (CP). Both the Nusselt number and pressure drop are higher in the CTT compared to the CP. For a Reynolds number of Re=1000, the twisted tape enhances the Nusselt number by 35.19%, 44.89%, 50.15%, and 54.96% at twist ratios δ = 6, 5, 4, and 3, respectively. Keywords— Flate plate solar collector, Thermal performance, Twisted tape, Heat transfer.

Citation

Souad BENKHERBACHE , FATIMAZOHRA Bakhti , Nafissa Moussaoui , ,(2025-05-06), Thermal Performance Analysis of a Flat-Plate Solar Collector,The First lrlational Conference on Renewable Energies and Advanced Electrical Engineering (NC REAEE'zS),University of M'sila

The increasing use of solar cells as energy converters necessitates a deeper understanding of these systems to optimize and enhance the utilization of this promising energy source. This study aims to numerically simulate the impact of temperature variations between 270 K and 340 K on the performance of solar cells. Specifically, it examines how temperature affects key parameters, including the fill factor (FF), open-circuit voltage (Voc), short-circuit current density (Jsc), and efficiency (ɳ), in a double-junction solar cell structure (ZnO / GaAs (p) / a-Si (n) / a-Si (p)) with layer thicknesses of 25, 100, 50, and 2500 nm, under a constant irradiance of 1000 W/m². This research was made possible using the advanced AMPS-1D (Analysis of One-Dimensional Microelectronic and Photonic Structures) simulation tool, which enables us to connect the performance characteristics of the solar cell with the material properties and manufacturing processes. After optimization, the results for the double-junction cell showed a short-circuit current density (Jsc) of 37.755 mA/cm², an open-circuit voltage (Voc) of 0.789 V, a fill factor (FF) of 0.862, and an efficiency (ɳ) of 25.705%. Keywords: a-Si; solar cells; GaAs; double junction; AMPS-1D; Temperature.

Citation

Nafissa Moussaoui , FATIMAZOHRA Bakhti , ,(2025-05-06), Assessment of the efficacy of double junction solar cells (GaAs/a-Si) in relation to temperature effects numerically,the first national conférence on renewable energies and advanced electrical engineering (NCREAEE'25),University of M'sila

This study investigates the mechanical properties of PP/jute fabric laminates in different weave configurations (Satin, Serge 2x2, and Taffetas), focusing on toughness, stress intensity, energy restitution rate, and fracture energies. The results show a narrow toughness range (2.9 to 3.7 MPa.m1/2) across configurations. Stress intensity factor peaks at 6 MPa.m1/2 for three composites, with one (Bio-Com B) reaching 8.5 MPa.m1/2. Energy restitution rate increases with crack growth, with Bio-Com B exceeding others at 24 kJ/m2. Fracture energy trends are consistent across materials, with weave having a notable influence on properties beyond a specific crack growth value. The study highlights the significant effect of reinforcement architecture on laminate mechanical properties, especially in fracture energy and crack growth resistance. It concludes that recycled jute/PP composites offer promising, sustainable alternatives for furniture and construction due to their superior cracking resistance and environmental benefits.

Citation

Nafissa Moussaoui , , (2025-01-25), Resistance to crack propagation of a composite with recycled jute fabric – Polypropylene, Composite Structures, Vol:356, Issue:, pages:118884, ELSEVIER

This study investigates the mechanical properties of PP/jute fabric laminates in different weave configurations (Satin, Serge 2x2, and Taffetas), focusing on toughness, stress intensity, energy restitution rate, and fracture energies. The results show a narrow toughness range (2.9 to 3.7 MPa.m1/2) across configurations. Stress intensity factor peaks at 6 MPa.m1/2 for three composites, with one (Bio-Com B) reaching 8.5 MPa.m1/2. Energy restitution rate increases with crack growth, with Bio-Com B exceeding others at 24 kJ/m2. Fracture energy trends are consistent across materials, with weave having a notable influence on properties beyond a specific crack growth value. The study highlights the significant effect of reinforcement architecture on laminate mechanical properties, especially in fracture energy and crack growth resistance. It concludes that recycled jute/PP composites offer promising, sustainable alternatives for furniture and construction due to their superior cracking resistance and environmental benefits.

Citation

Nafissa Moussaoui , , (2025-01-25), Resistance to crack propagation of a composite with recycled jute fabric – Polypropylene, Composite structures, Vol:356, Issue:, pages:118884, ELSEVIER

To strengthen lightweight composite buildings, scientists and businesses are seeking for environmentally friendly and long-lasting materials. The purpose of this research was to examine the properties of date palm waste fibre. This study examined date palm fibres for their density, crystallinity index, size of crystals, tensile strength, surface roughness, temperature stability, and severe degradation temperature. The research concluded that the studied fibres are suitable for usage as reinforcements in novel polymer composites that have many light industrial uses.

Citation

Nafissa Moussaoui , ,(2024-11-17), Valorization of date palm waste as reinforcement for lightweight composite materials,The 8th Conference on Inducticve Techniques University - Industry,M'SILA,M'sila

As agricultural biomass, Inula Viscosa Fiber (IVF) is one of the valuable natural fibers that is widely accessible in M'sila, Algeria. The aim of this study is to investigate the effects of alkali (NaOH) (3%) and potassium permanganate (KMnO4) (1%) on the physical and mechanical properties of IVF to enhance the interfacial bonding of IVF with thermosetting epoxy matrices (TE). The efficacy of the alkali and potassium permanganate treatments in eliminating impurities was studied using scanning electron microscopy and Fourier transform infrared spectroscopy. Compared to both alkaline and untreated IVF, permanganate-treated IVF shows superior tensile strength. The droplet test indicates that the interfacial stress resistance (IFSS) of alkali and permanganate-treated IVF is improved, while potassium permanganate-treated fibers show the highest IFSS. From this result, the higher interfacial shear strength was permanganate-treated fiber with 4.50 MPa, followed by alkaline treatment, and untreated of IVs fiber with 3.36 MPa and 2.93 MPa, respectively. Fiber treatments are thought to contribute to the creation of industrially useful, high-performance IVF-reinforced polymer composites.

Citation

Nafissa Moussaoui , ,(2024-11-17), Biocomposites of Epoxy and Natural Fiber: A Study of Their Micromechanical Properties,The 8th Conference on Inducticve Techniques University - Industry,M'SILA,M'sila

This research aims to examine the physical, structural and chemical properties of Aster Squamatus (AS) fibres, which are commonly found in Algeria, Brazil, France and the West Indies. In this work, we assess their appropriateness as reinforcing fillers to fabricate components for polymer composites principally designed for lightweight applications. To accomplish this objective, an extraction of fibres from plants modification of AS fibres and characterization of both untreated fibres (UASFs) and alkali-treated AS fibres (TASFs) are conducted. We analysed the crystallinity, chemical composition, thermal characteristics, and mechanical properties of AS fibres as per standard methods. It's clear from chemical treatment that amorphous components were successfully eliminated from the AS fibres, including hemicellulose, lignin, and wax. Consequently, the fibres' thermal, physical, and mechanical characteristics including Young's modulus, tensile strength, crystalline index, and surface roughness were substantially enhanced. It was determined that the fibres possessed a thermal stability of around 250 °C, with the maximal degradation temperature rising from 372.50 to 375.35 °C. The maximum stress rose from 183.24 ± 25.27 to 302.00 ± 24.91 MPa, the Young's modulus increased from 11.08 ± 1.1 to 18.53 ± 1.45 GPa, and the crystallinity index increased from 43% to 45%. Two-parameter Weibull statistics showed a strong link between experimental data and mechanical features of the twenty samples. We concluded from this work that AS plant fibres can serve as a robust reinforcing material in polymer composites for various applications.

Citation

Nafissa Moussaoui , , (2024-09-01), Effect of alkali treatment on new lignocellulosic fibres from the stem of the Aster squamatus plant, Journal of Materials Research and Technology, Vol:32, Issue:, pages:2882-2890, ELSEVIER

There is a pressing need for investigations of solar conversion systems to enhance and perfect the use of this expandable energy resource. This necessitates additional research on the development of solar cells, which are the mainstay of these systems. In this regard, the purpose of this study is to examine, using numerical modeling, the impact of cell temperatures in the range of 270–340 K on solar cell performance and efficiency. Two configurations are considered based on different overlapping materials. A solar cell type ZnO/a-Si(n)/a-Si(p) (single-junction) with thickness of 25 nm, 50 nm, and 2500 nm, respectively, and a solar cell type ZnO/GaAs(p)/a-Si(n)/a-Si(p) (double-junction) with thickness of 25 nm, 100 nm, 50 nm, and 2500 nm, respectively, are examined. The electrical characteristics, fill factor (FF), and efficiency (ɳ) are extracted to highlight the results of the present study. Numerical analysis was performed using AMPS-1D (One-Dimensional Device Simulation for Analysis of Microelectronic and Photonic Structures), a modeling and analysis program. This analysis enabled the establishment of a causal relationship between the features of the considered solar cells and their corresponding material attributes, and the production process.

Citation

Nafissa Moussaoui , , (2024-08-22), Numerical Investigation of the Impact of Temperature on a-Si and GaAs/a-Si Semiconductor Solar Cells, Journal of Electronic Materials, Vol:53, Issue:11, pages:6803-6810, SPRINGER US

As agricultural biomass, Inula Viscosa Fiber (IVF) is one of the valuable natural fibers that is widely accessible in M'sila, Algeria. The aim of this study is to investigate the effects of alkali (NaOH) (3%) and potassium permanganate (KMnO4) (1%) on the physical and mechanical properties of IVF to enhance the interfacial bonding of IVF with thermosetting epoxy matrices (TE). The efficacy of the alkali and potassium permanganate treatments in eliminating impurities was studied using scanning electron microscopy and Fourier transform infrared spectroscopy. Compared to both alkaline and untreated IVF, permanganatetreated IVF shows superior tensile strength. The droplet test indicates that the interfacial stress resistance (IFSS) of alkali and permanganate-treated IVF is improved, while potassium permanganate-treated fibers show the highest IFSS. From this result, the higher interfacial shear strength was permanganatetreated fiber with 4.50 MPa, followed by alkaline treatment, and untreated of IVs fiber with 3.36 MPa and 2.93 MPa, respectively. Fiber treatments are thought to contribute to the creation of industrially useful, high-performance IVF-reinforced polymer composites.

Citation

Nafissa Moussaoui , ,(2024-05-06), Thermoset epoxy's effect on the mechanical and interfacial bonding strength of inula viscosa fibers after permanganate and alkali treatments,Le 2ème colloque national de chimie (CNC2@2024),M'SILA,M'sila

Composite materials must meet the requirements of imposed mechanical stresses through the judicious choice of reinforcements and matrix. The use of composite materials in specific fields (aeronautics, automotive, aerospace, insulation, etc.), represents a significant advantage as we can design a composite material that meets the requirements of the stresses. The goal of our work is to study the delamination behavior of a bidirectional composite with vegetable fibers. This study is conducted by determining the mechanical characteristics of these materials from tensile tests and analyzing mode I fracture through delamination tests of several samples differentiated by a pre-defect. These tests are aimed at determining the energy restitution rate and then the R-curves (resistance curve). The material used is a composite material with a polymeric matrix and vegetable fibers. The matrix is an unsaturated polyester, and the reinforcement is a jute fabric combined with glass fibers developed within the Non-Metallic Materials Laboratory (L.M.N.M) (University of Sétif -1-). Different types of plates with different interfaces are elaborated.

Citation

Nafissa Moussaoui , ,(2024-05-06), Delamination behavior of a bidirectional composite with vegetable fibe,Le 2ème colloque national de chimie (CNC2@2024),M'SILA,M'sila

C'est un support de cours du module qui prend le nom " Mécanique des milieux continus" distiné aux étudiants de la spécialité Génie mécanique option Construction mécanique pour le niveau Master 1

Citation

NafissaMoussaoui , ,(2023-11-10); Mécanique des milieux continus,Mohamed Boudiaf University -M'sila,

The utilization of cellulosic fibers is becoming increasingly widespread worldwide as promising raw material in polymer composite reinforcement. However, and despite the multiple advantages of cellulosic fibers like the lower density, cheap cost and biodegradability, their use is limited due to hydrophilic character which reduces their affinity with hydrophobic matrices. A natural fiber treatment, whether chemical or physical, is advised to address this issue. The purpose of this study is to characterize the Ampelodesmos mauritanicus plant (AM) fibers extracted by the chemical method (2% NaOH for 48 h) and treated (chemically and physically). We carried out acetylation, mercerization and microwaves modification of the AM plant fibers to reduce their hydrophilic character. The influence of chemical and physical treatments on the structure and morphology of AM plant fibers was characterized by analytical techniques as per International Standard. X-ray diffraction confirmed that the AM fibers have a good crystallinity index (52.4%). Microwave physical treatment at 550 W increased their density from 1.00 to 1.55 g/cm3, their Young’s modulus and tensile strength from 11.0 to 18.6 GPa and from 155 to 290 MPa, respectively, giving the highest values. It is followed by chemical treatments: first with acetic anhydride (C4H6O3) for 4 h and then with 3% NaOH also for 4 h. It should be observed that the data have a very considerable dispersion that calls for statistical analysis (method of Weibull with two and three parameters was utilized).

Citation

Nafissa Moussaoui , Lamia BENHAMADOUCHE , , (2023-07-15), The impact of physicochemical treatments on the characteristics of Ampelodesmos mauritanicus plant fibers, Cellulose, Vol:30, Issue:12, pages:7479–7495, springer nature

Researchers and industry are looking for green and sustainable materials as reinforcement for lightweight composite structures. This research aim was designed to study the characteristics of the fibre extracted from a waste product of the spathe of date palm (SDP). In this work, density, crystallinity index, crystal size, tensile strength, surface roughness, extreme degradation temperature and thermal stability of SDP fibres were investigated. Density is estimated to be 0.59 g/cm3. X-ray diffraction analysis indicated the crystallinity index about (57.82%) and the crystal size is (19 nm). The results of the thermal analysis gave the degradation temperature as 270 °C and Ea as 69.14 kJ/mol. Scanning electron microscopy (SEM) investigation confirmed the presence of surface contaminants including wax and other foreign materials. Also, the mechanical properties identified are tensile strength (100 ± 21.5 MPa), and Young's modulus (4 ± 0.9% GPa). Based on the study's findings, SDP fibres should be considered for usage as a reinforcing material in the development of novel polymer composites with a wide range of lightweight industrial applications.

Citation

Lamia BENHAMADOUCHE , Nafissa Moussaoui , , (2023-04-30), New cellulosic fibre from Spathes of male date for lightweight composite materials: extraction and characterization, Journal of Materials Research and Technology, Vol:24, Issue:, pages:5361-5371, Elsevier

The objective of our work is to follow by acoustic emission the different damage mechanisms of a bi-directional jute-polyester composite material. The material and the various tests were carried out in the non-metallic materials laboratory at the Institute of Optics and Precision Mechanics.

Citation

Nafissa Moussaoui , ,(2022-12-09), STUDY OF THE DAMAGE MODES OF A JUTE-POLYESTER LAMINATE,1st International Conference on Innovative Academic Studies on 10-13 September in 2022,Konya/Turkey.

Ce travail a pour but de contribuer à réduire les impacts environnementaux à travers l’élaboration de composites avec des matériaux recyclables pour être utilisés dans différentes applications. A cette fin, des composites ont été développés à base de jute récupéré à partir de sacs d'emballage et de polypropylène (PP) récupéré à partir de déchets obtenus lors de la fabrication de fils de PP. Les composites développés ont ensuite été caractérisés. Tout d'abord, la fraction massique optimale a été déterminée afin d'obtenir de bonnes performances mécaniques. Plusieurs fractions massique (30%, 40%, 45%, 50%, 60%, et 70%) ont été expérimentées, les meilleures caractéristiques étaient celles du biocomposite avec un taux de renforcement de 40% (σ = 39,07 MPa, E = 4,60 GPa). Avec ce pourcentage, des biocomposites jute-PP ont été élaborés avec différentes architectures de jute (Satin, Serge2x2, Taffetas). Une étude structurelle des différents déchets de tissus de jute a été réalisée pour confirmer s'ils sont adaptés à une utilisation avec une matrice thermoplastique (c'est-à-dire, à une température de fabrication de ≥ 200C). Des essais de traction ont été effectués sur ces composites afin de connaître l'effet de la structure de tissage du renforcement.

Citation

Lamia BENHAMADOUCHE , Nafissa Moussaoui , ,(2022), Caractérisation des propriétés physiques et mécaniques des biocomposites PP/tissu de jute recyclé,Colloque International sur la Biomécanique et L’Imagerie Médicale (CIBIM 2022),oran

Mechanical behavior of a laminated bio composite (effect of alkalinisation temperature)

Citation

Nafissa Moussaoui , ,(2022), Mechanical behavior of a laminated bio composite (effect of alkalinisation temperature),colloque en innovation biomécanique et imagerie médicale,Oran

Advance composites are considered as the substitute of solid waste wood. By utilizing these waste materials with different type of polymers enhance the properties of material and also make efficient to use as product. Advance composites are also fulfilling the requirement of environment concerns. Polylactic acid (PLA) is one of the biopolymer, have been studied extensively, the basic studies such as structural and extraction process have been discussed. Many different type natural fibres and biopolymers are being used to prepare biodegradable materials. The properties of natural fibre have been studied on the basis of the chemical compositions that decide the properties of single fibre. There are several test have been conducted such as mechanical, thermal, physical, and weathering test on natural fibre reinforced PLA composites. In this chapter, PLA based natural fibre composites have been studied and their properties have been elaborated.

Citation

LamiaBENHAMADOUCHE , NafissaMoussaoui , ,(2021); Various Types of Natural Fibers Reinforced Poly-Lactic Acid Composites,Eco-Friendly Adhesives for Wood and Natural Fiber Composites Characterization, Fabrication and Applications,Springer, Singapore

This research designed to contribute to reduce the environmental impacts through the preparation of composites with recyclable materials to be used in different applications. To this end, composites have been developed based on jute recovered from packaging bags and polypropylene (PP) reclaimed from scraps obtained from the manufacture of PP yarns. The developed composites were then characterized. First of all, the optimum mass fraction was determined in order to achieve good mechanical performance. Several mass fractions (30%, 40%, 45%, 50%, 60%, and 70%) were experimented to find that the best characteristics were those of the biocomposite with 40% reinforcement (σ = 39.07 MPa, E = 4.60 GPa). With this ratio, jute–PP biocomposites were further developed with different jute architectures (Satin, Serge 2 × 2, Taffeta). A structural study of the different jute fabric wastes was carried out to confirm whether they are suitable for use with a thermoplastic matrix (i.e., at a processing temperature of ≥200°C). Tensile and bending tests were carried out on these composites to find out the effect of the weave structure of the reinforcement.

Citation

Lamia BENHAMADOUCHE , Nafissa Moussaoui , , (2021), Characterization of physical and mechanical properties of recycled jute fabric reinforced polypropylene composites, Polymer Composites, Vol:42, Issue:10, pages:5435-5444, John Wiley & Sons, Inc.

This research aims to characterize and analysis of newly cellulosic fiber extracted from Inula viscosa bark. The obtained Inula viscosa fibers were also characterized after having been treated with alkali and permanganate treatments. The effect of chemical treatments on the mechanical, physical, chemical and thermal properties of Inula viscosa fibers was investigated by using, X-ray diffraction, thermo gravimetric, scanning electron microscope analysis, optical microscope test, tensile and droplet tests. The treatment with permanganate was found to have the higher density (1.154 ± 0.032 g/cm3) compared to that of the untreated ones (1.040 ± 0.010 g/cm3). The best mechanical properties were also achieved when the permanganate treatment was adopted. In this pretext, tensile strength values and Young modulus were found as 196.99 ± 28.89 MPa and 12.98 ± 2.36 GPa, respectively. It is estimated that the fiber treatments will enable high-quality Inula Viscosa Fiber-reinforced polymer composites for use in the industry.

Citation

Nafissa Moussaoui , Lamia BENHAMADOUCHE , , (2021), Extraction and characterization of fiber treatment Inula viscosa fibers as potential polymer composite reinforcement, Journal of Polymers and the Environment, Vol:29, Issue:11, pages:3779-3793, Springer US

Naturel fiber composites & use of agrowaste as filler

Citation

Nafissa Moussaoui , ,(2020), Naturel fiber composites & use of agrowaste as filler,Naturel fiber composites & use of agrowaste as filler,Malysia

the effect of chemical treatement on composite properties

Citation

Nafissa Moussaoui , ,(2018), « Effect of mercerization temperature on composite properties ( jute/polyester) »,international conference on Advances in Mechanical Engineering,Istanbul 2018 December19-12-2018yildiz technical university, Istanbul-Turkey ICAME.

the effect of chemicals treatments on composite fibre/polyester

Citation

Nafissa Moussaoui , ,(2018), Effect of mercerization temperature on composite properties ( jute/polyester,4th international conference on Advances in Mechanical Engineering ICAME.,Istanbul 2018 December19-12-2018yildiz technical university, Istanbul-Turkey