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Analysis of the mode shapes of Kaplan runners
(Multidisciplinary Digital Publishing Institute, 2022-07-02)
Article
Open AccessTo prevent lifetime shortening and premature failure in turbine runners, it is of paramount importance to analyse and understand its dynamic response and determine the factors that affect it. In this paper, the dynamic ... -
3D printing, complement to approach in complex lesions
(2022-03-01)
Article
Open AccessThe use of 3D printing is a technology in increasing expansion in the area of the medical sciences. We describe it the technical characteristics of 3D printing and a protocol of obtaining of models three dimensional as a ... -
Large eddy simulation of optimal synthetic jet actuation on a SD7003 airfoil in post-stall conditions
(2022-08)
Article
Open AccessAerodynamic performances may be optimised by the appropriate tuning of Active Flow Control (AFC) parameters. For the first time, we couple Genetic Algorithms (GA) with an unsteady Reynolds-Averaged Navier-Stokes (RANS) ... -
Wear resistance enhancement of AISI 1045 steel by vibration assisted ball burnishing process
(Elsevier, 2022)
Article
Open AccessThe objective of the research was to analyse the impact of the ultrasonic vibration assistance on the wear resistance and topology enhancement of AISI 1045 cylindrical steel samples after a ball burnishing process. Burnishing ... -
Experimental validation in a controlled environment of a methodology for assessing the dynamic behavior of railway track components
(2022-05-19)
Article
Open AccessThis article presents a novel methodology conducted under controlled laboratory conditions to assess the dynamic behavior of the components of railway tracks by applying an unbalanced mass excitation force. The methodology ... -
Influence of the brushing process on the roughness of inclined surfaces of pieces manufactured in X40CrMoV5
(2022-03-01)
Article
Open AccessThe purpose of the burnishing process is to achieve a good surface finish, improve mechanical properties and increase the useful life of parts with different geometries. This paper analyzes the effect of this process on ... -
Combination of acoustic emission and vibratory measure-ments to characterize an ultrasonic vibration assisted ball burnishing tool for a lathe
(2021-07-14)
Article
Open AccessIn this paper, a resonant system that produces a movement of low amplitude and ultrasonic frequency is used to achieve the vibration assistance in a ball-burnishing process. A full vibration characterization of this process ... -
Study of the influence of the manufacturing parameters on tensile properties of thermoplastic elastomers
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-01-31)
Article
Open AccessAdditive manufacturing (AM) has increased its field of application, not only for prototypes but also for final parts. Therefore, the need of study new materials is currently growing. This paper aims to study the effect of ... -
Hand-eye calibration made easy through a closed-form two-stage method
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Article
Open AccessAn analysis of the existing hand-eye calibration methods reveals that most of them are far from trivial. And, what is worse, their intrinsic complexity makes it difficult to elucidate under which circumstances they fail ... -
Comparison between structural configurations designed by steel shear wall, moment resistant frame and X shape bracing systems
(2022-01-01)
Article
Open AccessNowadays, in order to increase construction of tall structures, the importance of choosing optimum systems, with a huge energy absorption capacity against wind and earthquake loads, has been widely considered. Since four ... -
3D printed surgical planning prototype manufactured by a hybrid multi-material 3D printer
(Institute of Physics (IOP), 2021-10-01)
Article
Open AccessSurgical planning is a preoperative method of pre-visualization that is carried out before or during a surgical intervention in order to achieve the best outcome. This can be done either image-based or hands-on. Regarding ... -
A New Hybrid Optimization Method, Application to a Single Objective Active Flow Control Test Case
(Multidisciplinary Digital Publishing Institute, 2022-04-12)
Article
Open AccessGenetic Algorithms (GA) are useful optimization methods for exploration of the search space, but they usually have slowness problems to exploit and converge to the minimum. On the other hand, gradient based methods converge ...
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