A5019862249- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Tree Root and Stability Studies
- Plant Surface Properties and Treatments
- Underwater Vehicles and Communication Systems
- Advanced Aircraft Design and Technologies
- Structural Health Monitoring Techniques
- Acoustic Wave Phenomena Research
- Vibration Control and Rheological Fluids
- Plasma Diagnostics and Applications
- Nuclear reactor physics and engineering
- Material Properties and Applications
- Prosthetics and Rehabilitation Robotics
- Nuclear Physics and Applications
- Topology Optimization in Engineering
- Vehicle Noise and Vibration Control
- Soil Mechanics and Vehicle Dynamics
- Textile materials and evaluations
- Water Quality Monitoring Technologies
- Ionosphere and magnetosphere dynamics
- Advanced Thermodynamic Systems and Engines
- Robotic Path Planning Algorithms
- Aerospace, Electronics, Mathematical Modeling
University of Lisbon
2010-2024
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento
2017-2024
Portuguese Naval School
2023-2024
Instituto Universitário Militar
2023-2024
IdMind (Portugal)
2021
Universidade Nova de Lisboa
2019
Instituto Superior Técnico
2017-2018
Instituto Politécnico de Lisboa
2010-2017
This article presents a study on the use of dynamical response multi-laminated periodic bars to create resonance band gaps within useful frequency ranges. The objective is control, in passive form, longitudinal vibration transmissibility specific and wide enough ranges interest. achieved by separation two adjacent eigenfrequencies. A relation between modal analysis, harmonic analysis Bloch wave theory proposed, for which no reference was found searched literature. As shown, selection...
This article presents a study on the use of dynamical response multi-laminated periodic bars to create resonance band gaps within useful frequency ranges. The objective is control, in passive form, longitudinal vibration transmissibility specific and wide enough ranges interest. achieved by separation two adjacent eigenfrequencies. A relation between modal analysis, harmonic analysis Bloch wave theory proposed, for which no reference was found searched literature. As shown, selection...
This paper presents the initial conceptual study of integration reflectometry antennas and waveguides (WGs) in DEMO. The are located at several poloidal angular positions covering a full section helium-cooled lithium lead breading blanket. concept slim cassette (SC) is presented which allows for possible side attachment to blanket sector offers compatibility with remote handling (RH) operations. proposed concepts WGs sectors relative motion decoupling, vacuum boundary breaking, RH presented....
Unmanned vehicles (UVs) have become increasingly important in various scenarios of civil and military operations. The present work aims at the conceptual design a modular Amphibious Ground Vehicle (A-UGV), that can be easily adapted for different types land and/or water missions, with low monetary cost (<5k€, without sensors). Basing on needs highlighted 2021 review Strategic Directive Portuguese Navy, necessary specifications requirements are established two mission scenarios....
Unmanned vehicles (UVs) have become increasingly important in various scenarios of civil and military operations. The present work aims at the conceptual design a modular Amphibious Ground Vehicle (A-UGV) that can be easily adapted for different types land and/or water missions with low monetary cost (EUR < 5 k, without sensors). Basing on needs highlighted 2021 review Strategic Directive Portuguese Navy, necessary specifications requirements are established two mission scenarios. Then,...
The reflectometry diagnostic for demonstration fusion reactor (DEMO) is envisaged to provide the electron density profile and be used as a control real-time vertical position controller. An initial conceptual study has been performed defining of antennas routing waveguides. In present design, integration driven by remote handling blanket interfaces. To progress with system integration, neutronics simulations were assess cooling requirements. This paper presents nuclear thermal analysis...
The ITER plasma position reflectometry system measures the edge electron density profile of plasma, providing real-time supplementary contribution to magnetic measurements plasma-wall distance. Some components will be in direct sight and therefore subject stray radiation, which may cause excessive temperatures stresses. In this work, thermal finite element analysis antenna adjacent waveguides is conducted with ANSYS V17 (ANSYS® Academic Research, Release 17.0, 2016). Results allow...
This study presents an experimental characterization of cork storage modulus used to model the vibration response bars built using alternate layers and steel. In setup, specimen was suspended from a fixed support by two thin lines while shaker mobile metallic chains. The connected bar through force transducer imposing dynamical deformation that propagates specimen. An accelerometer in opposite extremity measures corresponding is then obtained first peak this frequency response. proposed...
The opening of cracks on the lateral sides AFO's is a common problem due to stress forces applied during gait cycle. can usually be prevented with inclusion structural reinforcements in expected cracking zone AFO. This study proposes an approach evaluate effect AFO's, quantifying and deformation experienced by orthotic device stance phase gait. For that, CAD file AFO had crated then edited using software (ANSYS® SpaceClaim® Direct Modeler™) order create geometry suitable analyzed CAE...
The ITER plasma position reflectometry system will be used to estimate the distance between of magnetic separatrix and first wall at four predefined locations, complementing diagnostics system. antennas studied in this paper are installed blanket shield modules rows 3 4, on high-field side tokamak. As part corresponding waveguides directly exposed plasma, they subjected high radiation doses from neutrons gammas, which may cause irradiation-induced changes material properties compromise...
Even though the design of vibration isolators is well-established for many engineering applications, their efficiency in wide and multiple frequency ranges still a challenge. In these cases, use Phononic-Based Vibration Isolators (PBVIs) may be advantageous as they present different Attenuation Regions (ARs) which elastic waves are strongly attenuated. Therefore, paper devoted to experimental evaluation, terms force transmissibility, types supporting devices tested on load mass motor...
Purpose The purpose of this paper is to evaluate the impact different Additive Manufacturing (AM) orientations on structural behavior topologically optimized wings for Unmanned Aerial Systems (UAS), which might enable lightweight and low cost, yet complex, wing designs. Design/methodology/approach Based an aerodynamic load, a two dimensional NACA0012 airfoil considering PolyLatic Acid (PLA), several volume fractions manufacturing orientations. Then, resulting topologies are post-processed...
ITER's Collective Thomson Scattering (CTS) system is a diagnostic instrument that will measure the plasma density and velocity through scattering of microwave radiation. Some key components CTS are quasioptical mirrors used to produce astigmatic beam patterns, which have impact on strength spatial resolution signal. The exposed neutron radiation, may alter mirror properties or deform its structure. These changes affect collection scattered radiation consequently decrease quality...