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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 ...
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 ...
Eraikuntza sektoreko enpresen berrikuntza maila neurtzeko modelo baten garapena
(2017-03-24)
Eraikuntza sektorea ez da bere errendimendu berritzaileagatik bereizten eta historikoki bere eraginkortasun-ezagatik kritikatua izan da. Horrez gain, gaur egungo krisi-ondorengo eszenatoki zailak ehun produktiboaren eta ...
Translational parallel manipulator with Pa2 kinematic joints
(Springer, 2016-10-01)
The kinematic pair Pa2 is composed of two interlinked parallelograms. It has two degrees of freedom that generate a translational plane variable with position. It has a structure different from the PaPa pair, which is ...