EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Welding is a permanent assembly process aiming at ensuring material continuity. However, during the solidification stage, several types of defect may develop. Hot cracking is one of the most common defects observed. The hot cracking occurs usually at the end of the solidification stage when the solid fraction is over 0.9. In this domain, the permeability decreases and the deformations in the...

Porous carbon materials are of great interest due to their wide range of applications. They are, for example commonly used as electrode material in Electrochemical Double Layer Capacitors (EDLCs), systems in which energy is stored by reversible ion adsorption. The performance of these devices is largely dependent on the structure of the carbon. As a consequence, the development of a better...

In recent years, numerical simulations have become indispensable for designing and optimizing sheet metal forming processes. Simplifying “real” processes in numerical models aims for reducing the computational expenses; however, simplifications may considerably influence the quality of the numerical results. For this reason, the present work investigates and compares different simplified...

Computational techniques have been important complementary materials design tools because they are able to predict mechanical properties of new materials formulations as well as provide microscopic details of deformation and failure mechanisms. Continuum mechanics based techniques have been extensively used in the design of conventional composites. However, when the material contains...

Recently we showed that the ibuprofen dimer formation can cause the incomplete cocrystalization of ibuprofen and nicotinamide in course of hot melt extrusion process. Here, we extend our analysis to investigate the effect of ibuprofen degree of polymerization on ibuprofen and nicotinamide phase behavior. We used extended Flory–Huggins model combined with molecular dynamics employing a refined...

The equilibrium shape of metal particles is the
polyhedron that minimizes the total surface energy. Such shapes are
routinely modeled using variations of the Wulff construction [1]. At
the nanoscale, edge energy becomes important as the fraction of atoms
at edges of nanoparticles cannot be neglected. We present a systematic
method for calculation of edge energies based on atomistic...

Preparation techniques of reinforced composite materials that include nanostructured phases such as carbon nanotubes need a characterization tool that quantifies the degree of homogenization of the nanophase embedded in the composite. Homogenization is a critical aspect during the manufacturing because the presence of aggregates is a major problem for the mechanical performance of the...