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Analysis of Interleaved Input-Parallel Output-Parallel Dual-Active-Bridge Converter for More Electric Aircraft
(IEEE, 2021)
Dual-Active-Bridge (DAB) converter is one of the most proposed topologies when considering DC/DC bidirectional isolated power conversion. In these applications, the power density of the converter is one of the main ...
The effect of cross-section geometry on crushing behaviour of 3D printed continuous carbon fibre reinforced polyamide profiles
(Elsevier, 2021)
The present study has analysed the effect of cross-section geometry and the printing pattern of continuous carbon reinforced polyamide on the axial and radial crushing behaviour. Each geometry and printing pattern generated ...
Diseño como habilitador para el cambio: modelo para la medición del impacto del diseño en empresas de serviciosDesign as an enabler of change: a model for measuring the impact of design in service organizations
(AEIPRO, 2021)
Design is a human centred creative approach that transforms and improves organizational capabilities for innovation and strategic decision-making. The aim of this research is to identify the impact of design, in particular ...
Quasi-static and dynamic crush behaviour of 3D printed thin-walled profiles reinforced with continuous carbon and glass fibres
(Elsevier, 2021)
The present paper investigates the suitability of cFF printed material and technologies for crashworthiness applications. To this end, the quasi-static and dynamic crush behaviour of 3D printed thin-walled hollow profiles ...
Bemrosetta: An open-source hydrodynamic coefficients converter and viewer integrated with Nemoh and Foamm
(EWTEC, 2021)
Boundary Element Method (BEM) solvers are extensively used to obtain the hydrodynamic coefficients required to model hydrodynamic forces in oating marine structures. BEM solvers require the discretization of the submerged ...
Code-to-code nonlinear hydrodynamic modelling verification for wave energy converters: Wec-sim vs. nlfk4all
(EWTEC, 2021)
In the wave energy conversion field, simulation tools are crucial for effective converter and controller design, but are often prone to become very casespecific, in both structure and parameter selection. This is due to ...
Simulation of Cold Forging Processes Using a Mixed Isotropic-Kinematik Hardening Model
(Springer, 2021)
Cold forging is a manufacturing process where a bar stock is inserted into a die and squeezed with a second closed die. It is one of the most widely used chipless forming processes, often requiring no machining or additional ...
High-Speed Material Characterization Using an Instrumented Forging Hammer
(Springer, 2021)
Hammer forging is a widely employed manufacturing process to produce parts with excellent mechanical properties. Although the rheological behavior and the microstructural transformation phenomena of metals under hammer ...
Impact of silicon carbide devices in 2 MW DFIG based wind energy system
(IEEE, 2020)
Renewable energies are going through a major increment, mainly wind and photovoltaic energies, being market competitiveness the main driver for their massive penetration. As power converters are used to interface renewable ...
The Soret coefficients of the ternary system water/ethanol/triethylene glycol and its corresponding binary mixtures
(Springer, 2021)
Thermodiffusion in ternary mixtures is considered prototypic for the Soret effect of truly multicomponent systems. We discuss ground-based measurements of the Soret coefficient along the binary borders of the Gibbs triangle ...
A novel indirect cryogenic cooling system for improving surface finish and reducing cutting forces when turning ASTM F-1537 cobalt-chromium alloys
(Springer, 2020)
This paper presents a novel indirect cryogenic cooling system, employing liquid nitrogen (LN2) as a coolant for machining the difficult-to-cut ASTM F-1537 cobalt-chromium (CoCr) alloy. The prototype differs from the already ...
On the definition of a risk index based on long-term metocean data to assist in the design of Marine Renewable Energy systems
(Elsevier Ltd, 2021)
Marine Renewable Energy (MRE) systems are designed to maximise energy generation and ensure survivability. The traditional design process is based on pure environmental conditions, tends to be too conservative and limits ...
Analysis of the Tool Stick-Out Influence on Machining Chatter
(2021)
Increased stability in machining processes is highly desired by all machining industries when vibrations and specially chatter occur. This phenomenon is defined as a self-excited vibration that occurs due to the regeneration ...
First-year university students entrepreneurial competence: Exploring the relationship between grit, creative self-efficacy and entrepreneurial self-efficacy
(Universitat Politècnica de València, 2021)
Grit, creative self-efficacy and entrepreneurial self-efficacy have been
associated with the development of entrepreneurial behaviours that can
prepare students for a rapidly changing world of work. The main purpose ...
Contact pressure and sliding velocity ranges in sheet metal forming simulations
(2021)
In the last few years many efforts have been carried out in order to better understand what the real contact between material and tools is. Based on the better understanding new friction models have been developed which ...
Influences of Cutting Speed and Material Constitutive Models on Chip Formation and their Effects on the Results of Ti6Al4V Orthogonal Cutting Simulation
(2021)
The highly used Ti6Al4V alloy is a well know hard-to-machine material. The modelling of orthogonal cutting process of Ti6Al4V attract the interest of many researchers as it often generates serrated chips. The purpose of ...
A Controlled Thermoalgesic Stimulation Device for Exploring Novel Pain Perception Biomarkers
(IEEE, 2021)
Objective: To develop a new device for identifying physiological markers of pain perception by reading the brain's electrical activity and hemodynamic interactions while applying thermoalgesic stimulation. Methods: We ...
Petri net-based semi-compiled code generation for programmable logic controllers
(MDPI, 2021)
Industrial discrete event dynamic systems (DEDSs) are commonly modeled by means of Petri nets (PNs). PNs have the capability to model behaviors such as concurrency, synchronization, and resource sharing, compared to a step ...
Reactive Power Limits of Single-Phase and Three-Phase DC-Link VSC STATCOMs under Negative-Sequence Voltage and Current
(IEEE, 2021)
This paper analyzes and compares the reactive power limits of single- and three-phase configured dc-link Voltage Source Converter (VSC) structures for Static Synchronous Compensator (STATCOM) to operate with negative-sequence ...
Analytical Model of the Current Stress in Active-Bridge Active-Clamp Converter for More Electric Aircraft
(IEEE, 2021)
Nowadays, the emergence of electrically supplied actuators and energy storage systems is leading the aeronautic industry to develop aircrafts with more electrical power installed. Therefore, different Power-Electronic ...