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Now showing items 51-60 of 217
Una metodología para la mejora del proceso de roscado con macho en fundiciones de alta resistencia
(2018-01-31)
En el método planteado se tienen en cuenta los machos de corte mejores para roscar fundiciones de alta resistencia Austempered Ductile Iron(ADI) en condiciones industriales, en geometría, tipo de recubrimiento PVD y ...
An Analysis of Electroplated cBN Grinding Wheel Wear and Conditioning during Creep Feed Grinding of Aeronautical Alloys
(MDPI, 2018-05-14)
Cubic boron nitride (cBN), in addition to diamond, is one of the two superabrasives most commonly used for grinding hard materials such as ceramics or difficult-to-cut metal alloys such as nickel-based aeronautical alloys. ...
A Consistent Procedure Using Response Surface Methodology to Identify Stiffness Properties of Connections in Machine Tools
(MDPI, 2018-07)
Accurate finite element models of mechanical systems are fundamental resources to perform structural analyses at the design stage. However, uncertainties in material properties, boundary conditions, or connections give ...
Four-point contact slewing bearings for wind turbines: advances in structural modelling and friction torque calculation
(2018-02-23)
Los rodamientos de vuelco (slewing bearings en inglés) son elementos de máquina enfocados a aplicaciones de orientación. Estos componentes se emplean en máquinas de muy diferente naturaleza, como grúas, brazos robóticos, ...
Spiral Bevel Gears Face Roughness Prediction Produced by CNC End Milling Centers
(MDPI, 2018-08)
The emergence of multitasking machines in the machine tool sector presents new opportunities for the machining of large size gears and short production series in these machines. However, the possibility of using standard ...
Design methodology for MAST-type parallel manipulators based on kinematic, dynamic and stiffness criteria: theoretical and experimental application to the 2PRU-1PRS
(2016-07-01)
This thesis presents research in the field of parallel manipulators. We can basically divideindustrial robots in two groups ¿ parallel and serial manipulators. Parallel manipulators are composed ofa mobile and a fixed ...
Desarrollo de un sistema de optimización de forma para perfiles aerodinámicos mediante algoritmos genéticos
(2017-07-11)
La optimización de forma en fluidodinámica consiste en encontrar diseños de elementos mecánicos que den flujos con características óptimas. Físicamente se tiene un flujo que interactúa con ciertos elementos mecánicos sólidos ...
Automatic Analysis of Archimedes’ Spiral for Characterization of Genetic Essential Tremor Based on Shannon’s Entropy and Fractal Dimension
(MDPI, 2018-07)
Among neural disorders related to movement, essential tremor has the highest prevalence; in fact, it is twenty times more common than Parkinson's disease. The drawing of the Archimedes' spiral is the gold standard test to ...
Framework for the Shape Optimization of Aerodynamic Profiles Using Genetic Algorithms
(Hindawi Publishing Corporation, 2013)
This study developed a framework for the shape optimization of aerodynamics profiles using computational fluid dynamics (CFD) and genetic algorithms. Agenetic algorithm code and a commercial CFD code were integrated to ...
A Methodology to Evaluate the Reliability Impact of the Replacement of Welded Components by Additive Manufacturing Spare Parts
(MDPI, 2019-08-26)
This article shows a method for inspection scheduling of structures made by additive manufacturing, derived from reliability function evaluations and overhaul inspection findings. The routine was an adaption of an existing ...