Ekoizpen zientifikoa - Patenteak
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The effect of small perturbation on dynamics of absorptive LiBr-water solution
(American Institute of Physics Inc., 2024-2-1)In a binary solution of lithium bromide-water, even a small disturbance in the initial homogeneous mass fraction at the absorbing interface has profound effects on the entire system dynamics. This perturbation of absorption ... -
Effect of liner thermal properties and liner pre-cooling on the thermal management of fast-filling of hydrogen tanks
(Elsevier Ltd, 2024-1-2)In transportation applications, filling high pressurised hydrogen tanks within a few minutes implies a fast and large temperature increase that can compromise the structural integrity of the storage system and the safety ... -
A hybrid 1D-CFD numerical framework for the thermofluidic assessment and design of PEM fuel cell and electrolysers
(Elsevier Ltd, 2024-1-2)Given the current maturity of hydrogen technologies, accurate and computationally efficient numerical models are crucial for improving their understanding and development. Traditional models are either computationally ... -
Enhancing Flexibility in Industry 4.0 Workflows: A Context-Aware Component for Dynamic Service Orchestration
(Elsevier B.V., 2024-01-01)Manufacturing processes of the future will rely on standards for asset interoperability and service orchestration. The Asset Administration Shell (AAS) facilitates information exchange among Industry 4.0 assets, while ... -
Necking detection in stretch-bent materials exhibiting the Portevin-Le Chatelier effect
(Association of American Publishers, 2024-01-01)In recent years, there has been increasing societal awareness of the carbon dioxide (CO2) footprint resulting from individual actions and lifestyles. One of the research actions is focused on the development of eco-friendly ... -
Experimental evaluation of the maximal force before debonding a part from the build platform of an AM printer
(Association of American Publishers, 2024-01-01)Hybrid manufacturing relies on the combination of different processes to overcome their own limitations. Combining additive manufacturing such as material extrusion (MEX) and subtractive conventional processes such as ... -
Tool wear for finishing milling of green thermoplastic-ceramic composites fabricated with pellet AM
(Elsevier B.V., 2024-01-01)The wear of milling tools used for finishing green ceramics shaped by pellet additive manufacturing can be challenging. This article aims to evaluate the tool life of a tool, initially dedicated to thermoplastics, when ... -
A Systematic Method for Assessing the Machine Performance of Material Extrusion Printers
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-2-1)The performance assessment of additive manufacturing (AM) printers is still a challenge since no dedicated standard exists. This paper proposes a systematic method for evaluating the dimensional and geometrical performance ... -
Hole quality improvement in CFRP/Ti6Al4V stacks using optimised flow rates for LCO2 and MQL sustainable cooling/lubrication
(Elsevier Ltd, 2024-2-1)Carbon fibre reinforced polymer/titanium stacks (CFRP/Ti6Al4V) are employed in aeronautics due to their excellent weight-to-strength ratio and corrosion properties. However, these same material properties present challenges ... -
Correcting distortions of thin-walled machined parts by machine hammer peening
(Elsevier B.V., 2024-6-1)Thin-walled aerostructural components frequently get distorted after the machining process. Reworking to correct distortions or eventually rejecting parts significantly increases the cost. This paper proposes a new approach ... -
Experimental evaluation of the maximal force before debonding a part from the build platform of an AM printer
(Association of American Publishers, 2024-01-01)Hybrid manufacturing relies on the combination of different processes to overcome their own limitations. Combining additive manufacturing such as material extrusion (MEX) and subtractive conventional processes such as ... -
Dynamic decomposition and analysis of a supersonic impinging jet flow
(International Center for Numerical Methods in Engineering, 2014-7-1)Impinging jets are commonplace in industrial applications, including rocket engines, needle-free-dug delivery or cold-gas-dynamic spray processes. In the aerospace industry, rocket launches represent a critical phase during ... -
Implicit large eddy simulation of high-speed impinging jets
(International Center for Numerical Methods in Engineering, 2014-7-1)The dynamic process to be characterized by the following narrative comprises a supersonic jet impinging onto a flat surface, which produces complex fluid dynamic phenomena that are dominated by the intrecate shockwave ... -
Experimental uncertainty decompositions of aerodynamic coefficients affected by operative condition variations
(Elsevier B.V., 2020-12-1)A twofold analysis is performed on an experimental set-up comprising a low-Reynolds wind tunnel, with the aim of quantifying the effect of measurand uncertainties and operative condition variations in the lift and drag ... -
Vacuum packaging and semipassive chips for wireless temperature monitoring in industrial applications
(Institute of Electrical and Electronics Engineers Inc., 2017-12-21)This paper describes a smart system to monitor high temperature in industrial applications. The solution includes a semipassive microchip which allows logging data and wireless reading. Protection for the electronics against ... -
Industria eolikoko palen efizientzia aerodinamikoaren azterketaesperimentala baldintza ideal eta errealetan
(Udako Euskal Unibertsitatea, UEU = Universidad Vasca de Verano, 2021-01-01)Energia berriztagarrien paradigmak erronka ugari dakartza berorrekin, epe laburrean erantzun beharrekoak bederen. Energia eolikoaren kasuan, ustiapena ohiko haize-parkeetatik itsasalde edota hiriguneetara mugitzean datza, ... -
Theoretical Concepts for Describing a Replication-levels-based Uncertainty Analysis Approach
(International Frequency Sensor Association IFSA, 2021-01-01)Delimiting the scope of uncertainty analysis, which places itself between the fields of mathematics and physical experimentalism, may turn tedious for the newbie who tries to take it to application for the first time. ... -
Molinos de viento patentados por Jerónimo de Ayanz y Beaumont en el año 1606: un análisis conceptual desde una perspectiva ingenieril del año 2021
(Mondragon Unibertsitatea, 2021-01-01)En el presente documento técnico, se realiza un análisis desde un punto de vista ingenieril de los molinos de viento patentados por Jerónimo de Ayanz y Beaumont el siglo XVII. El análisis que se presenta podría denominarse ... -
Assessing the statistical validity of momentum-deficit-based CD measurements in turbulent configurations
(Elsevier B.V., 2021-8-1)An application-agnostic procedure is outlined for checking the validity of momentum-deficit-based drag measurements performed under different turbulent conditions in a wind tunnel. The approach defines a two-step methodology: ... -
Aerodynamic characterization of transitionally-operating airfoils under a set of flow conditions going from ideal to real configurations
(2021-9-24)Fluxu-erregimen trantsizionalean lan egiten duten profil aerodinamikoez baliatzen diren aplikazioak ugariak dira, mikro- eta nano-aero-ibilgailuetako hegoak adibidez, edota eskala ertain nahiz handiko aerosorgailuen palak ...
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