Materials Elaboration and Characterization and Modeling Laboratory (LEC2M)
LEC2M Laboratory
Our teams
Elaboration and Structures of Materials (ESM)
Team leader: Prof. FERHOUM Rabah
Key words : Phase transformation, Composites and nanocomposites, Microstructure, Sintering techniques, Microstructural analysis.
Description of the team's research theme
The themes developed by the team revolve around the study and development of various techniques for the elaboration of complex materials, as well as the structures, phase transformations, interfaces, etc. of these materials. In addition to the techniques already developed within our team (mechanosynthesis, densification by sintering, etc.), we are interested in the development of biodegradable composites and the characterization of their structures. Environmental objectives (recycling, biodegradability, environmental protection, etc.) are a natural fit with our research topics. In addition, studies of the phase transformations that take place in polymers and polymer-matrix composites fully deserve to be cited as our short-term objectives. The influence of chemical compositions and processing methods on material response is a major focus for our team.
Once these materials have been produced, they will undergo micro-structural analysis to enable numerical simulations on microscopic scales.
Research themes developed by the team
- Melting and sintering of metal alloys.
- Development of biodegradable polymer, metal and ceramic matrix composites.
- Study of mechanosynthesis and the self-propagating high-temperature combustion process (SHS).
- Structures and phase transformations in polymers and composites.
- Microstructural characterization of materials.
- Simulations of the microstructures of engineered materials
Other team members
- Pr. ALMANSBA Madjid
- Dr. BENALIA Ghalia
- Dr. NECHICHE Mustapha
- Dr. SERKHANE Nadia
- Mr AMIROUCHE Seifi
- Mr AGGOUN Yacine
- Ms AOUCHICHE Lylia
- Mr BOUDAOUD Aziz
- Ms CHERFI Tassadit
- Mr BOUDEDJA Amar
- Ms KHELOUI Kahina
- Mr BENCHERIF Mokhtar
- Mr CHERIFI Amar
- Mr DEHLOUZ Salem
- Ms SIDHOUM Zehra
- Ms FERRAH Dehbia
- Mr HANNOU Aghiles
- Mr DJEROUNI El-hachemi
Mechanics of Fracture and Fatigue (MRF)
Team leader: Prof. ABERKANE Méziane
Key words : Rupture, fatigue, piping, corrosion and ageing, polymers, metals
Description of the team's research theme
The team's research objectives revolve around the issues of fracture, fatigue and damage to materials and structures. The main lines of research are as follows:
1. Reliability of materials and structures
- Fatigue behavior of materials and structures.
- Influence of defect severity on fatigue life.
2. Studying the behavior of materials and structures under dynamic loading
- Dynamic tests (traction, compression and torsion).
- Dynamic behavior laws.
Themes
Use experimental techniques to carry out fatigue and fracture mechanics tests on materials and structures. Develop tools for predicting the service life of materials and structures. Develop repair methods to increase the service life of mechanical parts.
Other team members
- Dr BELLAHCENE Tassadit
- Dr HACHOUR Kamal
- Dr SADEG Lydia
- Ms REZIG Naima
- Mr. RASSOUL Yanis
- Mr FOUGHALIA Zakaria
Oxidation and Degradation of Materials (ODM)
Team leader: Pr. HALEM Nacer
Key word : Oxidation. Corrosion. Refractory materials. Characterization. New materials.
Description of the team's research theme
The objective of the Oxidation and Degradation of Materials (ODM) team is to study the degradation of materials under different aggressive environments. Particular attention is paid to the oxidation of refractory materials. Indeed, materials (of suitably chosen composition) produced (possibly in collaboration with team 01) by sintering from powders are intended for oxidation tests in order to study the oxidation kinetics of these sintered materials. These kinetics play an important role in governing the growth mechanisms of oxide layers. The study is completed by characterization by X-ray Diffraction (XRD), density measurements (hydrostatic or geometric) and microhardness by Vickers indentation (HV), and microstructural observations by optical microscopy (OM) or scanning electron microscopy (SEM) combined with EDS-X micro-analysis of the sintered materials and oxidation products. The interest of these manipulations lies in the fact that they enable us to formulate an experimental database in order to propose new, higher-performance materials.
Research themes developed by the team
- Study of refractory materials based on Nickel (Ni), Cobalt (Co) and Titanium (Ti) because of their good behavior at high temperatures (gas turbines, nuclear reactors, etc.).
- Combining materials such as aluminum, chromium and yttrium to improve the mechanical properties of these refractories.
- Study of the influence of these additions on oxidation kinetics.
- Study of new materials (MgxAly) from a sintering and oxidation point of view.
Other team members
- Dr HALEM Zohra
- Dr AÏDROUS Hakima
- Dr MAHIOUZ Nassima
Materials Behavior Modeling (MCM)
Team leader: Prof. OULD OUALI Mohand
Key words : Modeling. Numerical diagrams. Forming processes. Damage. Multi-physics coupling. Simulation. Micromechanics. Contact-friction.
Description of the team's research theme
The team's objective is to model the behavior of metallic and non-metallic materials (polymers, composites, nano-composites, etc.) in various environments (thermomechanical stresses, phase transformation, etc.). The models formulated at different scales (nano-, micro- and macro-mechanical) will be implemented in industrial calculation codes and/or coupled to these codes by appropriate algorithms (sequential...) with a view to carrying out numerical simulations. Procedures for experimental (in collaboration with Team 02) and/or numerical (inverse approach, model calibration, etc.) identification of material parameters will be proposed.
The team's fields of application cover both the development and shaping of materials (manufacturing processes involving plastic deformation and machining, etc.). The calculation of structures subjected to various loads (dynamic, fatigue, etc.) is of particular interest to the team. Another important objective of the team is to provide industry with ready-to-use "advanced" tools for the simulation of various physical phenomena and the design of new materials and products.
Research themes developed by the team
- Thermomechanical modeling of material behavior.
- Development of algorithms for implementing models in calculation codes.
- Formulation of numerical schemes for solving coupled problems.
- Material shaping processes and description of friction contact.
- Nanomechanical (molecular dynamics), micromechanical (dislocation dynamics, crystalline plasticity, etc.) and phenomenological description of ductile fracture.
- Multi-physics coupling (phase transformation, thermochemistry, etc.).
- Inverse approach to thermomechanical problems.
Other team members
- Prof. ASMA Farid
- Dr DJERIDI Rachid
- Dr MEGHLAOUI Bahia
- Mr AHMED ALI Abdellah
- Ms SI HADJ MOHAND Chafiaa
- Mr ZEROUKI Merzak
- Mr AGUECHARI Nassim
- Ms AIMENE Kahina
- Mr ZAIDI Ali
- Mr OUZERIAT Ali
- Mr. KHOUAS Aziz
- Ms MADOUNI Lylia
- Mr. BARKAOUI Mohamed
- Ms BEN CHABANE Nassima
- Ms DJAOUI Nardjes
- Mr BACHIR Samir
- Mr BOUMRAR Akli
- Mr AZZI Rachid
- Ms CHIKHI Nassima
- Mr KHRIS Aghiles
