17 documents found, page 1 of 2

On the development of an ergonomic approach for the design of an industrial rob...

As industries push for continuous technological innovation to boost their competitiveness, the need to balance techno-economical goals with emerging societal needs is now more pressing than ever. Inspired by the novel paradigm of Industry 5.0, we aim to place human physical and cognitive needs at the center of the production process, introducing proactive and human-aware robots capable of collaboration as co-wo...

A Machine Learning and computer-vision framework for real-time control in 3DCP:...

CEES 2023 | 2nd International Conference on Construction, Energy, Environment & Sustainability; 3D Concrete Printing (3DCP) is a fast-paced process that requires multiple parameters to be accurately tuned in order to guarantee a high-quality print. Despite the technological advances in 3DCP, the control of this process still requires frequent manual intervention, which can lead to error, inconsistency under dif...

Profile extrusion: experimental assessment of a numerical code to model the tem...

Designing an industrial calibration system that ensures fast and uniform cooling of a complex extruded profile is always a difficult task. Numerical tools are a valuable aid for the design of these systems in order to achieve fast, low-cost, and effective solutions. This work comprises the experimental validation of a numerical code, previously developed to support the design of profile extrusion calibration sy...

Experimental assessment of a numerical modelling code developed for the profile...

One of the critical stages in the extrusion of thermoplastic profiles is the cooling of the profile, which is usually undertaken in a metallic calibrator. In order to assure the highest possible productivity, the profile thermal energy must be removed as fast as possible. However, due to the typical low diffusivity of thermoplastic materials, the cooling stage is relatively long and the temperature gradients al...

Effects of particle size and surface chemistry on the dispersion of graphite na...

Carbon nanoparticles tend to form agglomerates with considerable cohesive strength, depending on particle morphology and chemistry, thus presenting different dispersion challenges. The present work studies the dispersion of three types of graphite nanoplates (GnP) with different flake sizes and bulk densities in a polypropylene melt, using a prototype extensional mixer under comparable hydrodynamic stresses. Th...

Introdução ao Python para alunos de Engenharia de Polímeros

UCI-3 (2016/2017); O objectivo deste texto não é apenas o de iniciar os seus utilizadores à programação. Nos dias de hoje, uma mais valia importante para qualquer Engenheiro ou Investigador é a capacidade de correlacioanar resultados e optimizar processos. O Python é uma ferramenta ideal para estes fins. Neste texto não se ensina só a escrever programas ou scripts. Fornecem-se aos alunos um conjunto de rotinas ...

Non-equilibrium dissipative particle dynamics simulations of polymers: the role...

Nanocomposites: the contribution of multiscale modelling to improve the dispers...

Tese de Doutoramento em Ciência e Engenharia de Polímeros e Compósitos; Polymer/layered silicate nanocomposites are a new class of materials that have raised much enthusiasm in scientiVc and technological domains due to their remarkable properties. However, tailoring their morphology and properties still remains a challenge. The present thesis combines experimental and theoretical approaches to further improve ...

First steps towards a multiscale model for fluid flow

On-line rheometry: a tool to monitor polymer nanocomposites production

The high potential of polymer nanocomposites has attracted the interest of both industrial and scientific communities. The final properties of these materials depend not only on the characteristics of the matrix and nanofillers, but also on the degree of dispersion of the nanofiller in the polymeric matrix. There are different methods to promote the dispersion of nanofillers in polymeric matrices, but the most ...