Abdellatif Imad

Abdellatif Imad

Université de Lille

H-index: 38

Europe-France

About Abdellatif Imad

Abdellatif Imad, With an exceptional h-index of 38 and a recent h-index of 30 (since 2020), a distinguished researcher at Université de Lille, specializes in the field of Mécanique des matériaux hétérogènes, bio-composites, homogénéisation numérique.

His recent articles reflect a diverse array of research interests and contributions to the field:

Effect of gradual thermoforming pressure on the mechanical properties of jute/polypropylene commingled composites

Mechanical performance and failure analysis of a fabric subjected to ballistic impact using multi-scale numerical modelling

Towards a numerical modeling of the coupling between RTM process and induced mechanical properties for rigid particle-filled composites

Delamination Characteristics of Aluminum-Composite Bonds: Impact of Reinforcements and Matrices

Natural Fibers to Composites Process, Properties, Structures

Efficient boundary surface reconstruction from multi-label volumetric data with mathematical morphology

Effect of particles morphology on the effective elastic properties of bio–composites reinforced by seashells: Numerical investigations

Ballistic limit evolution of field-aged flexible multi-ply UHMWPE-based composite armour inserts

Abdellatif Imad Information

University

Université de Lille

Position

___

Citations(all)

4531

Citations(since 2020)

2670

Cited By

2823

hIndex(all)

38

hIndex(since 2020)

30

i10Index(all)

82

i10Index(since 2020)

71

Email

University Profile Page

Université de Lille

Abdellatif Imad Skills & Research Interests

Mécanique des matériaux hétérogènes

bio-composites

homogénéisation numérique

Top articles of Abdellatif Imad

Effect of gradual thermoforming pressure on the mechanical properties of jute/polypropylene commingled composites

Authors

Muhammad Ayub Asghar,Yasir Nawab,Abdellatif Imad,Abdelghani Saouab,Muzzamal Hussain,Christophe Herbelot

Journal

Journal of Composite Materials

Published Date

2024/2

The present work presents a new approach to the parameters of the thermoforming process for jute fiber commingled thermoplastic composites based on pressure control. Effect of gradual pressure on the microstructures of jute fiber and their mechanical properties has been investigated. The singeing of Jute yarn and subsequent co-twisting with Polypropylene (PP) was done to make reinforcement. Jute/PP composites were developed using Jute/PP commingled reinforcement. Flexural and Charpy impact tests were conducted to analyze the mechanical performance of composites made using gradual and instant loading on the compression hot press. It is found that application of gradual pressure not only decreases fiber damages, but also increase flexural strength by 82%, impact strength by 43% and impact energy by 93% as compared to composite fabricated using instant pressure. Further, the complete analysis …

Mechanical performance and failure analysis of a fabric subjected to ballistic impact using multi-scale numerical modelling

Authors

Quoc Hoan Pham,Chu Tuan Long,Toufik Kanit,Abdellatif Imad

Journal

Journal of Composite Materials

Published Date

2023/3

In this paper, multi-scale numerical modelling analysis is proposed to study the ballistic responses of a Kevlar KM2 woven fabric. Three meso-microscopic multi-scale numerical models are conducted by varying the number of microscopic primary yarns in the impact zone from 2 to 10. In each model, we analyse the evolution of the contact force, the projectile velocity and the fabric energies. An analysis of the failure modes of each configuration is also performed. Results of the three multi-scale models and a mesoscopic model are compared in order to find the optimal number of microscopic primary yarns to predict the fabric’s ballistic behaviour. It is highlighted that the multi-scale model consumes a reasonable computation cost. Furthermore, with the primary yarns modelled in the fibre scale, this model can fully describe the complex physical phenomena, such as fibre failure and the interaction between fibres, fibres …

Towards a numerical modeling of the coupling between RTM process and induced mechanical properties for rigid particle-filled composites

Authors

Ahmed El Moumen,Abdelghani Saouab,Abdellatif Imad,Toufik Kanit

Journal

The International Journal of Advanced Manufacturing Technology

Published Date

2023/3

In this work, a method is proposed for modeling RTM process and the associated mechanical behavior of composites filled with mono-sized spherical Alumina particles. This method combines (i) a numerical model (RTM model) that allows the simulation of the RTM process during the injection of particle filled resins and (ii) a computational strategy of mechanical properties based on the homogenization methods. These proposed models have already been validated with experimental results. The RTM model is based on 3 sub-models: the first one to describe the suspension flow, the second one to simulate the advance of the flow front, and the last one to model the particles filtration by the fibrous medium. The distribution result of the concentration of particles in the fibrous medium obtained at the end of the simulation of the injection is used as input data for mechanical models of homogenization. The …

Delamination Characteristics of Aluminum-Composite Bonds: Impact of Reinforcements and Matrices

Authors

M Hussain,A Imad,A Saouab,A Abbas,T Kanit,S Shahid,Y Nawab

Journal

International Journal of Polymer Science

Published Date

2023/12/30

Adhesion properties of metal-composite bonds are crucial in defining composite capability with other metallic components, and failures could lead to severe accidents. Hence, the study is aimed at the development and characterization of metal-composite bonds using different rigid adherends and adhesive materials (thermoset and thermoplastics). Among natural fibers, jute was used, while aramid, carbon, and glass woven reinforcements were employed from synthetic fibers. A simultaneous comparison of both thermoset and thermoplastic matrices was done using epoxy, polypropylene (PP), and polyvinyl butadiene (PVB) as adhesive materials. Floating roller delamination characterization proved variation in adhesion qualities governing different failure modes by varying adhesive even in a single rigid adherend. The highest fracture toughness was observed for aluminum-jute bonds made with PP and PVB that was due to toughness of matrix and intralaminar failure. Carbon being brittle in nature showed the most fluctuated performance with a 90% difference between the highest value of carbon-PVB and the lowest value of carbon-epoxy. Thermoplastic matrices owing to plasticity offered overall more fracture toughness than brittle thermoset resin. Furthermore, intralaminar was the dominant failure mechanism in the jute-based bond made with thermoplastic matrix.

Natural Fibers to Composites Process, Properties, Structures

Authors

Abdelghani Saouab,Abdellatif Imad,Khubab Shaker

Published Date

2023

Natural fiber composites are a preferred alternative to conventional composites due to their environment-friendly nature. However, their market share is limited due to: a) limited number and quantities of natural fibers available for composites, b) diversity in fibers structure, c) poor mechanical properties of fibers as well as composites, d) susceptibility to microbial attacks, and e) cellulose degradation temperature around 200 deg C, which hinders the development of natural fiber reinforced thermoplastic composites using thermoforming at high temperatures. A number of researchers have contributed to the solution of the problem of poor mechanical properties and issues related to fabrication during the last decade. This book covers these different solutions. The book is divided into two principal themes: a) structure–property relationship: fibers to composites—it includes the discussion on fibers, their surface …

Efficient boundary surface reconstruction from multi-label volumetric data with mathematical morphology

Authors

Franck N’guyen,Toufik Kanit,F Maisonneuve,Abdellatif Imad

Journal

Computers & Graphics

Published Date

2023/12/1

This paper proposes a new, fully automatic and robust approach to generating triangular meshes directly from volumetric data (scanned images), particularly when these images contain multiple adjacent labels. Current meshing techniques produce a number of mesh elements directly related to the number of components (voxels) in the image. This number can be considerable if the image is large. The proposed methodology is significantly less dense in terms of the number of elements compared to marching cube methods. The proposed method presents no configuration ambiguity and is faithful to the original morphology of the images regardless of the thinness of the topologies or the presence of possible erratic morphological configurations that may lead to geometric interpretation indecisions.

Effect of particles morphology on the effective elastic properties of bio–composites reinforced by seashells: Numerical investigations

Authors

Nada Ben–Ltaief,Franck NGuyen,Toufik Kanit,Abdellatif Imad,Nizar Bel–Hadj–Ali

Journal

Journal of Composite Materials

Published Date

2023/1

Seashell waste, mainly composed of calcium carbonate and made of a complex microstructure, has been increasingly used as a bio–filler for composite materials, in a crushed or powdered state. Seashell particles present various sizes and shapes which in turn could affect the mechanical properties of the composites. The main aim of this work is to investigate the effect of particles size and shape and inter–phase properties on the overall elastic properties of bio–composite reinforced by seashell particles. For that purpose, a morphological study based on particles size measurement and shape analysis, was first carried out in order to identify the morphological distribution of seashell particles. Seashell particles were classified into six diameters and six types of shape. Afterwards, a numerical homogenization based on finite element and representative elementary volume is used to compute the effective elastic …

Ballistic limit evolution of field-aged flexible multi-ply UHMWPE-based composite armour inserts

Authors

L Gilson,F Coghe,A Bernardi,A Imad,L Rabet

Journal

Composite Structures

Published Date

2023/10/15

The development of high-performance polymer-based fibres has given rise to new generations of ballistic protection. However, as polymers and their composites are sensitive to ageing, it is important to understand how these armours maintain their protective capabilities over time. This paper focuses on two sets of armour panels consisting of 36 plies of DYNEEMA® SB21. The 'aged' samples, were collected after ten years of regular use in the field, while the equivalent 'new' samples were manufactured specifically for this study. A large number of ballistic impacts were performed using fragment simulating projectiles to determine differences in ballistic limit. In addition, the number of perforated plies was recorded for non-perforations, while residual velocities were assessed for perforations using a high-speed camera. Overall, the ballistic performance of the samples did not appear to change significantly over time …

On effective thermal conductivity of heterogeneous material: From periodic unit inclusion cell to large representative volume element

Authors

YL Zhan,W Kaddouri,T Kanit,Q Jiang,LR Liu,A Imad

Journal

International Journal of Modern Physics B

Published Date

2023/9/19

The custom design of a composite material requires the knowledge of its effective behavior which depends on several parameters such as the properties of the constituents, their distributions, shapes and sizes. In thermal conductivity, all these parameters have a direct and significant influence on the effective thermal conductivity (ETC) of composites. These parameters act differently on the behavior of the composite according to its use as much as a good conductor by improving its ETC or by reducing it by considering it as an insulator. The main goal of this work is an extensive study of all possible situations of ETC by a numerical homogenization technique based on the Finite Elements Method. For this purpose, the two main categories of composites, namely the periodic composites represented by the unit cell and the random RVE, are considered. For each category of composite, different contrasts, different …

On effective thermal properties of wood particles reinforced HDPE composites

Authors

MS Sukiman,T Kanit,F N’guyen,A Imad,F Erchiqui

Journal

Wood Science and Technology

Published Date

2022/3

Plant fiber biocomposites have the potential of being thermal insulating materials with strong mechanical resistance. However, they are vulnerable to defects due to the incompatibility of the materials. In that prospect, this study focuses on the determination of thermal properties of wood particles reinforced HDPE composites (WPC) using experimental, theoretical, and computational modeling approaches. From the laser flash analysis in the experimental setup, the results show that the addition of 30 and 60 of wood particles leads to a reduction of 20 and 44% in thermal conductivity, respectively, as compared to the neat HDPE. This demonstrates the thermal insulation capabilities of the wood particles. The use of several theoretical models to determine the WPC’s effective thermal conductivity shows good consistency with the experimental results, with a maximum discrepancy error of 4%. However, a noticeable …

Evaluation of Effective Elastic Properties for Wood–Cement Composites: Experimental and Computational Investigations

Authors

Jean Gérard Ndong Engone,Ahmed El Moumen,Chafika Djelal,Abdellatif Imad,Toufik Kanit,Jonathan Page

Journal

Sustainability

Published Date

2022/7/14

In this work, wood–cement composites (WCC) based on poplar sawdust were developed and fabricated by the extrusion process. The volume fraction of wood particles in the mixes was varied from 23% to 46%. The mechanical properties of these WCC were characterized in compression to determine the maximum compressive strength and the Young’s modulus. In the second part, these Young’s modulus values were estimated in compression using a 3D numerical homogenization which takes into account the variability in wood particle lengths and the random distribution in the mixes. The obtained results show a good agreement between the experimental data and numerical calculations up to a 35% volume fraction. The model’s poor estimation for large volume fractions (over 35%) could be attributed to the experimental sample size, which is not representative for large volume fractions, the percolation of the wood particles into the mixes and the inhibition of the cement setting.

Natural fiber metal laminate and its joining

Authors

Muzzamal Hussain,Abdellatif Imad

Published Date

2022/12/12

The fiber metal laminates (FML) combine the properties of metal and composites. The new material shows better mechanical properties as compared to constituents. As the two different types of materials are joined together so the joining of metal and composites become very crucial. The quality of the adhesive bond determines the final mechanical properties of fiber metal laminate. Most of the time aluminum is used as a metal part. Different types of surface treatments have effect on the mechanical properties and different techniques are used to evaluate the quality of different surface treatments. This chapter covers all the details related to natural fiber metal laminates including fibers, metals, surface treatment of metals, fabrication techniques, methods to evaluate metal-composite bond, and mechanical characterization of natural fiber metal laminates. The reinforcement material for the composite is synthetic fiber but …

From unit inclusion cell to large Representative Volume Element: Comparison of effective elastic properties

Authors

YL Zhan,W Kaddouri,T Kanit,Q Jiang,L Liu,A Imad

Journal

European Journal of Mechanics-A/Solids

Published Date

2022/3/1

The concept of equivalent morphology has received much consideration in recent decades. The importance of this concept is reflected in the fact that an inclusion of any morphology can be replaced by a circular one in simulation. If this concept is confirmed, it will facilitate the modeling and simulation of complex configuration microstructures.To decide on this concept, an in–depth study is carried out in this work, trying to answer it in a clear and definitive way by trying to identify all the possible situations. For this the two types of composites, namely, periodic interpreted by an elementary cell and random interpreted by a Representative Volume Element (RVE) with 200 inclusions are considered. To be sure that the isotropy is provided by the RVE of the periodic microstructure, two types of elementary cells were treated: one circular and the other square. In order to cover all possible situations, the inclusion of the …

Vers une modélisation numérique multi-échelle robuste du comportement d'impact des matériaux tissés en utilisant les fibres équivalentes microscopiques

Authors

TL Chu,Cuong Ha Minh,A Imad,T Kanit

Published Date

2022/5/16

Une modélisation multi-échelle du comportement mécanique d’un tissu sec 2D soumis à un impact balistique est développée en combinaison entre une description mésoscopique pour les fils secondaires (non contact direct avec le projectile) et une microsopique pour les fils primaires (en contact direct avec le projectile) afin de prendre en compte les interactions importantes fibres/fibres et fibres/projectile dans la zone d’impact. Cependant, il faut noter qu’à l’échelle microscopique, un fil est composé de 400 fibres environ dont la prise en compte peut alourdir notablement les calculs. Pour cela, nous avons opté pour introduire la notion d’une" fibre équivalente" correspondant à 10 fibres. Ce qui donne au total 42 fibres équivalentes pour modéliser un fil. L’efficacité de cette stratégie multiéchelle a été démontrée par une comparaison en termes de vitesse du projectile et de réactions du projectile de ce modèle multi-échelle avec ceux obtenus dans le cas d’une modélisation mésoscopique complète bien validée avec l’expérience.

Investigation on Microstructure, Tensile Properties and Fatigue Characterization of Porous Date Palm Fiber

Authors

Salah Amroune,Abderrezak Bezazi,Alain Dufresne,Fabrizio Scarpa,Abdellatif Imad

Journal

Journal of Natural Fibers

Published Date

2022/12/2

Date palm fibers have been studied as potential reinforcement in composite materials. Their density is equal to 1.22 g.cm−3; making them suitable for use in lightweight applications. In order to efficiently use these fibers and understand their mechanical properties, quasi-static tensile tests and cyclic fiber fatigue tests were performed to determine the mechanical properties. Their internal structure, elementary fibers and porosity were analyzed by scanning electron microscopy. The results show that the mechanical properties are clearly improved by taking into account the porosity by calculating the real section of the fibers by using the imageJ software a cross-sectional pore fraction of the fibers has been determined and the ultimate properties of the pore-free bulky fibers has been calculated with stress and Young’s modulus increased by approx. 54% as compared to the highly porous natural fibers.

Void-growth computational analysis in elastic-plastic porous materials

Authors

R Bensaada,T Kanit,A Imad,M Almansba,A Saouab

Journal

International Journal of Mechanical Sciences

Published Date

2022/3/1

This study aims to model the effective mechanical response of highly porous materials using computational homogenisation. A two-phase material is considered here in the form of a von Mises elastic-plastic matrix that includes spherical identical voids. A wide range of void volume fractions from 0.1% to 24% is investigated. The representative volume element principle is adopted to determine the effective yield surface of each case. Its representativeness is checked from a statistical point of view and the mechanical response is set for each porosity rate considering a wide range of stress triaxiality ratios. The relation between void volume fraction and stress triaxiality is discussed and an analysis based on the unit cell computation is proposed to examine the void shape evolution according to these parameters. Therefore, an improvement of the Gurson–Tvergaard–Needleman (GTN) model considering a wide range of …

Effect of matrix and hybrid reinforcement on fibre metal laminates under low–velocity impact loading

Authors

M Hussain,A Imad,Y Nawab,A Saouab,C Herbelot,T Kanit

Journal

Composite Structures

Published Date

2022/5/15

This study aims to investigate the effect of matrix and hybrid reinforcement on Low–Velocity Impact LVI behaviour of Fibre Metal Laminates FMLs. The matrix was epoxy and Poly–Vinyl Butyral PVB, while the reinforcement was produced by sandwiching 3D–woven jute core with plain–woven skin. The plain–woven fabric was made with jute, aramid and carbon fibres. A drop weight impact test was performed for the evaluation of LVI performance. The behaviour of different FMLs was determined by comparing the pattern of curves, cross–section of damaged samples, x–ray computed tomography and crack progression phenomenon. The epoxy–based FMLs showed poor LVI response and suffered perforation due to its brittleness. The PVB–based FMLs showed higher impact resistance due to high toughness and plasticity, and had a higher impact force, lower damage, and more residual deflection. Even PVB based …

Tensile properties optimization of date palm leaflets using Taguchi method

Authors

Nasser Bouhemame,Kamal Eddinne Aiadi,Abderrezak Bezazi,Haithem Boumediri,PNB Reis,Abdellatif Imad,Fabrizio Scarpa

Journal

Journal of Natural Fibers

Published Date

2022/12/1

Lignocellulosic fibers from date palm are one of the most available biomasses without significant valorization in the world. This work makes use of an experimental Taguchi design with three factors to determine the optimal conditions of three parameters related to date palm leaflets (gauge length, loading speed and fiber position). The paper also shows an analysis of variance for identifying the parameters that provide a maximization of their tensile properties and obtaining a significant linear model for the manufacturing of natural fibers derived from those date palm components. The results show that the factor that most affects the tensile properties of those leaflets is the gauge length, followed by the fiber within the leaflets position. The best properties were obtained for the top part of the leaflets, 20 mm gauge length and 1 mm/min speed. Moisture tests for date palm leaflets have been also carried out; a drying period …

Experimental and numerical investigation of the dynamic behaviour of a ballistic plastilina using an adapted Taylor impact test

Authors

Peng Ren,Jiaqi Zhou,Ali Tian,Wei Zhang,Wei Huang

Journal

Latin American Journal of Solids and Structures

Published Date

2017

The dynamic response and failure mechanism of clamped thin aluminum alloy plates subjected to underwater impulsive loading are investigated by laboratory experiments and finite element (FE) simulations. The effects of plate thickness, impulsive loading and fluid-structure interaction on failure modes in clamped thin aluminum plates are comprehensively assessed in this study. The underwater explosive shock loading experiments were performed by underwater non-contact explosive simulator to identify failure modes of target plates under loads with different intensities. The 3D digital image correlation was applied to measure the real-time deformation of the specimens throughout the impulsive event. Depending on the loading intensity, the failure modes of thin aluminum plates were subdivided into three modes. The Scanning electron micrographs of the fracture surfaces show that the local failure mechanism was tensile necking in all cases. A calibrated FE model was adopted to predict the overall dynamic behavior of plates. The results indicate that the thickness of plates had no significant effect on the deformation modes. In addition, the quantitative relations of plate thickness, the effect of fluid-structure interaction and the failure of plate subjected to underwater shock loading were revealed by the combination of the experimental and simulation results. The results obtained in this research provide a potential guidance to enhance the impulsive resistance of underwater structure.

Effect of the Temperature on the Mechanical Properties of Jute Fabric Reinforced Epoxy Composite

Authors

Youssef Ben smail,Ahmed El moumen,Fatima Lmai,Abdellatif Imad

Published Date

2022/11/16

This work presents an experimental evaluation into the effect of the temperature upon the thermal properties and the mechanical properties of jute fabric/epoxy composite heated at different temperatures. The jute fabric/epoxy was prepared at the ambient temperature and fixed volume fraction of jute (four fabric layers) using infusion method. To examine the effect of the temperature, the composite was heated at different temperatures. The mechanical properties of the jute fabric/epoxy heated at different temperatures were carefully investigated. The results shows that the composites exposed to the high temperature are prone to the lower mechanical properties. At the temperature (80 ℃), the composite shows a high ability to deformation due to the matrix softening which reduces the cohesion between the epoxy and the jute fabric, which is the reason for the decrease of the tensile stress. Moreover, the matrix softening …

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Abdellatif Imad FAQs

What is Abdellatif Imad's h-index at Université de Lille?

The h-index of Abdellatif Imad has been 30 since 2020 and 38 in total.

What are Abdellatif Imad's top articles?

The articles with the titles of

Effect of gradual thermoforming pressure on the mechanical properties of jute/polypropylene commingled composites

Mechanical performance and failure analysis of a fabric subjected to ballistic impact using multi-scale numerical modelling

Towards a numerical modeling of the coupling between RTM process and induced mechanical properties for rigid particle-filled composites

Delamination Characteristics of Aluminum-Composite Bonds: Impact of Reinforcements and Matrices

Natural Fibers to Composites Process, Properties, Structures

Efficient boundary surface reconstruction from multi-label volumetric data with mathematical morphology

Effect of particles morphology on the effective elastic properties of bio–composites reinforced by seashells: Numerical investigations

Ballistic limit evolution of field-aged flexible multi-ply UHMWPE-based composite armour inserts

...

are the top articles of Abdellatif Imad at Université de Lille.

What are Abdellatif Imad's research interests?

The research interests of Abdellatif Imad are: Mécanique des matériaux hétérogènes, bio-composites, homogénéisation numérique

What is Abdellatif Imad's total number of citations?

Abdellatif Imad has 4,531 citations in total.

What are the co-authors of Abdellatif Imad?

The co-authors of Abdellatif Imad are Georges Ayoub.

    Co-Authors

    H-index: 25
    Georges Ayoub

    Georges Ayoub

    University of Michigan

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