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Your search keyword '"Bouazizi, Mohamed Lamjed"' showing total 267 results
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267 results on '"Bouazizi, Mohamed Lamjed"'

7. Analysis of material removal process when scratching unidirectional fibers reinforced polyester composites

Author

Mzali Slah, Elwasli Fatma, Zemzemi Farhat, Mezlini Salah, Mkaddem Ali, and Bouazizi Mohamed Lamjed

Subjects
composite, scratch test, wear modes, friction, wear map, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

In this study, the micromechanical scratch behavior of unidirectional glass fiber reinforced polyester (GFRP) using several wear conditions was highlighted. Single-indenter scratch tests (SSTs) were carried out on GFRP composite material perpendicular (SST⊥) and parallel (SST//) to fiber direction. Damage modes dominating the material removal process (MRP) and friction exhibit significant sensitivity to both attack angle and normal load. From findings, damage modes and apparent friction coefficient substantially accentuate when increasing the attack angle. The inspections of the damage state at different testing conditions using a scanning electron microscope (SEM) reveal the dominating modes governing the MRP through the different phases. The response surface methodology (RSM) was adopted to develop a mathematical model based on the measured data. The RSM approach was found very promoting for predicting friction evolution versus attack angle and normal load. The proposed model reveals good ability not only in predicting apparent friction coefficient but also in detecting separately its ploughing and adhesive component. To emphasize the correlation between friction coefficient and MRP, the wear maps have been drawn up.

Published
2023
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27. Dynamics of convective slippery constraints on hybrid radiative Sutterby nanofluid flow by Galerkin finite element simulation

Author

Bouslimi Jamel, Alkathiri Ali A., Alharbi Abdulaziz N., Jamshed Wasim, Eid Mohamed R., and Bouazizi Mohamed Lamjed

Subjects
sutterby hybrid nanofluid, entropy generation, viscous dissipation, finite element, shaped-factor, Technology, Chemical technology, TP1-1185, Physical and theoretical chemistry, QD450-801
Abstract

The heat transport and entropy formation of an unsteady Sutterby hybrid nanofluid (SBHNF) are investigated in this work. SBHNF’s flowing and thermal transport properties are investigated by exposing the nanofluid to a slippery hot surface. This analysis includes the influences of solid-shaped nanoparticles, porous materials, radiative flux, and viscous dissipative flow. The Galerkin finite element technique (G-FEM) is used to find self-similar solutions to equations that are then transformed into ODEs using appropriate transformations. This research considers two diverse kinds of nanosolid-particles, copper (Cu) and graphene oxide (GO), using non-Newtonian engine-oil (EO) as the working fluid. In the flowing, energy, skin friction, Nusselt number, and entropy production, important findings for the various variables are visually depicted. The most notable finding of the analysis is that when SBHNF (GO–Cu/EO) is compared to a typical nanofluid (Cu–EO), the thermal transmission rate of SBHNF (GO–Cu/EO) gradually increases. Furthermore, heat transfer is greatest for spherical-shaped nanoparticles and lowest for lamina-shaped nanoparticles. The entropy in the model is increased when the size of the nanoparticles ϕ\phi is increased. The comparable impact is noticed once the radiation flowing Nr{N}_{\text{r}} and Deborah number λ\lambda increase.

Published
2022
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