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Phase transformation fronts propagation during the Stress Induced Martensitic transformation in NiTi Shape Memory Alloy wires at impact strain rates
(EDP Sciences, 2009)Propagation of phase transformation fronts during the stress induced martensitic (SIM) transformation at impact strain rates, on the order of 10 s-1, was observed in situ by measuring changes in infrared radiation on the ... -
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 ... -
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 ... -
Development and experimental validation of a macroscopic analytical model aiming to generate metal-FRP stacks drilling cutting force and torque
(2021)Composites materials and especially FRP are increasingly employed in many fields of applications (transport, aerospace, …) due to the current trend of improving global energy performances of new designs notably by mass ... -
Contact pressure, sliding velocity and viscosity dependent friction behavior of lubricants used in tube hydroforming processes
(2021)The final quality of sheet and tube metal formed components strongly depends of the tribology and friction conditions between the tools and the material to be formed. Furthermore, it has been recently demonstrated that ... -
Microservices for Continuous Deployment, Monitoring and Validation in Cyber-Physical Systems: an Industrial Case Study for Elevators Systems
(IEEE, 2021)Cyber-Physical Systems (CPSs) are systems that integrate digital cyber computations with physical processes. The software embedded in CPSs has a long life-cycle, requiring constant evolution to support new requirements, ... -
Using Machine Learning to Build Test Oracles: an Industrial Case Study on Elevators Dispatching Algorithms
(IEEE, 2021)The software of elevators requires maintenance over several years to deal with new functionality, correction of bugs or legislation changes. To automatically validate this software, test oracles are necessary. A typical ... -
Partial Power Processing Based Charging Unit for Electric Vehicle Extreme Fast Charging Stations
(IEEE, 2020)This paper presents an analysis and design of a charging unit inside an electric vehicle extreme fast charging station. Due to the benefits that partial power processing achieves in terms of size reduction and efficiency ... -
In-depth Life Cycle Cost Analysis of a Li-ion Battery-based Hybrid Diesel-Electric Multiple Unit
(IEEE, 2020)This study analyzes the life cycle costs of railway projects involving hybrid diesel-electric multiple units, focusing on the influence of lithium-ion battery technologies and energy management strategies. Specifically, 3 ... -
How to Quantify the Security Level of Embedded Systems? A Taxonomy of Security Metrics
(IEEE, 2020)Embedded Systems (ES) development has been historically focused on functionality rather than security, and today it still applies in many sectors and applications. However, there is an increasing number of security threats ... -
Una aproximación conceptual para la definición de la mediación digital consensuada en edades tempranas
(Universidad de Sevilla, Grupo de Investigación Didáctica. Análisis tecnológico y cualitativo de los procesos de enseñanza-aprendizaje, 2022)Ante la creciente tendencia del uso de las tecnologías digitales en la primera infancia y la falta de claridad entre la comunidad científica, son cada vez más las personas, agentes e instituciones alarmadas por cómo su uso ... -
Evolution of Surface Roughness in Grinding and its Relationship with the Dressing Parameters and the Radial Wear
(Elsevier, 2013)Grinding is a machining process specially indicated for finishing operations in hard materials, in order to obtain low surface roughness (Ra 0.1 μm to 2μm) and tight tolerances. The cutting tool is the grinding wheel which ... -
Characterization of Ti64 forging friction factor using ceramic coatings and different contact conditions
(Elsevier, 2017)Hot forging processes are highly influenced by the contact conditions between the billet and the dies. A wrong definition of the contact conditions may lead to wrong predictions of the final component geometry, the quantity ... -
Influence of tool wear on residual stresses when turning Inconel 718
(Elsevier, 2016)This paper analyzes the effect of tool wear on residual stresses when turning. Inconel 718 discs were machined for prolonged periods at several cutting speeds, feed-rates and depth of cut. Tests were interrupted to measure ... -
Novel SHM method to locate damages in substructures based on VARX models
(IOP, 2015)A novel damage localization method is proposed, which is based on a substructuring approach and makes use of Vector Auto-Regressive with eXogenous input (VARX) models. The substructuring approach aims to divide the monitored ... -
Surface machining condition and fatigue life on Inconel 718
(Elsevier, 2018)Life assessment of components working in aero-engines at elevated temperatures is critical. Machining has a serious effect on these nickel-based alloys, for example in turbine discs, affecting their life in service. Machining ... -
Relationship between the use of ICT and the degree and type of diversification
(Elsevier, 2016)Advances in information and communication technologies (ICT) has given way to a new genre of opportunities for companies expanding their horizons to explore new markets and to diversify their business. In this sense, the ... -
Effect of heat Treatment Conditions on the Machinability of Ti64 and Ti54 M Alloys
(Elsevier, 2012)Orthogonal tests on cylindrical workpieces were carried out to analyze the effect of heat treatment on the machinability of newly developed Ti54M titanium alloy in comparison with Ti64. This paper focuses on the comparison ...
