56 datasets found

This numerical investigation of an advanced Gurson–Tvergaard–Needleman (GTN) model is an extension of the original work of Ben Bettaieb et al. (2011). The model has...

A stocky tubular tension-torsion specimen geometry was optimized to characterize the effect of the stress state (stress triaxiality and Lode angle parameter) on metals...

The increasing use of polymers in engineering structures is promoted by the need to reduce both cycle/cost production and the weight of these structures. PSA Peugeot...

To probate the technology of CO2 geological storage, the integrity of the site must be assure over time. This industruial problematic involves the study of the...

The increasing demands to improve the performance of aerospace and other engineering Systems require a new class of structures, such as smart structures. These can be...

Due to their high thermo-mechanical properties and low densities, ceramic matrix composites (CMC) are candidate materials for hot parts in gas-turbine engines. Various...

It is hard to determine the energy dissipation that occurs during an earthquake, especially where reinforced concrete structures are concerned. The reason for this is...

The non-linear mechanical behaviour of CMC involves the initiation and growth of micro-cracks. Ata macroscopic scale, mechanisms of damage can be associated with...

This thesis focuses of the mechanical behavior and damage of a 3D braided composite. The material analysis is based on experimental and numerical approaches. First,...

EB-PVD thermal barrier coatings used in aircraft turbines are subjected to extreme conditions that lead to their spallation. To ensure the integrity of the parts, it's...

Power law creep damage is one of the most intriguing unsolved phenomena of materials science. Models based on continuum mechanics generally predict a much higher...

The objective of the PhD thesis « Study and modelling of the pavement reinforcement with glass fibre grid under fatigue loading » is to characterize the reinforcement...

This thesis work objective is the development of a hydro-mechanical constitutive model which accounts for damage-plasticity couplings in unsaturated geomaterials. The...

The industry uses more and more organic matrix composite materials to replace the light metallic alloys. With a strenght/mass ratio superior to the metallic alloys,...

A great number of industrial thermo-mechanical systems are facing today transitory regimes with different speeds according to the functioning frequencies. Enhancing...

Femoral fractures caused by the osteoporosis become major problem of public health, and therefore, this subject becomes an increasingly important goal for both...