Abdelkibir Benelfellah

Teacher Researcher

My research focuses on the analysis and optimization of the performance of hybrid composite and nanocomposite materials and structures subjected to complex multiphysical loading conditions. A combined experimental and numerical approach is implemented to characterize damage mechanisms and mechanical behavior, while enhancing durability. My work is structured around three main research axes: (1) Mechanical Behavior and Multiphysical Coupling in Nanofilled Hybrid Composites This research axis aims to understand the influence of microstructural effects and multiphysical interactions on the behavior of nanoparticle-reinforced composite materials. It encompasses the analysis of anisotropic damage mechanisms, delamination, internal friction, and failure criteria, in relation to the microstructure and applied loading conditions. (2) Durability and Aging of Nanofilled Polymer Composites The objective is to assess and model the degradation of nanofilled hybrid composites when exposed to harsh environments (thermal variations, fire exposure, mechanical loading). An integrative approach, combining advanced experimental testing and multiphysics numerical modeling, is developed to establish a link between aging phenomena, residual mechanical properties, and optimization strategies. (3) Inverse Problems and Identification of Constitutive Parameters This research area focuses on the development of advanced methods for identifying the mechanical properties and interfacial characteristics of composite structures. It relies on 2D (optical imaging) and 3D (tomographic) image correlation techniques, along with innovative strategies for characterizing interfaces in assemblies and laminated composites. The applications of this research are primarily in the transport and energy sectors, where improving the performance, reliability, and durability of composites is a key strategic challenge.