Mostrando ítems 35-54 de 80
Miguel Fernández, Jesús de (Fecha de defensa: 2023-11-17)
(English) The control strategies implemented in exoskeletons play a crucial role in determining the interaction between the device and user. However, it is unclear what is the most suitable control strategy and settings ...
Roca Enrich, Joan (Fecha de defensa: 2006-02-10)
Els robots caminadors presenten alguns avantatges respecte als tradicionals robots mòbils amb rodes, que es resumeixen en major mobilitat i capacitat de superació d'obstacles. Un dels principals problemes actuals en el ...
Martínez González, Eva (Fecha de defensa: 2014-01-30)
This thesis is focused on the calibration of the Acoustic Emission (AE) technique to detect and identify damage mechanisms in tool steels. The AE measurement procedure has been calibrated for two mechanical tests: fracture ...
Mohammadi, Mahdi (Fecha de defensa: 2015-04-10)
Lab-on-a-Chip (LOC) integrated microfluidics has been a powerful tool for new developments in analytical chemistry. These microfluidic systems enable the miniaturization, integration and automation of complex biochemical ...
Roselló i Molinari, Xavier (Fecha de defensa: 1977-05-20)
La tesi descriu dos algorismes relatius al transport públic que actuen en sèrie. El primer genera una xarxa d'autobusos urbans entesa com a un conjunt de línies o be en modifica una de ja existent de forma que minimitzi ...
Hameed, Saqib (Fecha de defensa: 2017-09-22)
The thesis presented is performed with the aim of studying the effect of electropulses (EPs) in machining processes such as drilling and round turning processes for different materials. When the EPs of short duration are ...
Sánchez Egea, Antonio José (Fecha de defensa: 2016-01-26)
This thesis presents a study on the variation of the mechanical properties of some materials. These variations are registered for processes as bottom bending, wire drawing or round turning, which are performed under high ...
Ivanova Téneva, Elitsa (Fecha de defensa: 2020-02-28)
This thesis has been focused on optimizing the resistent capacity and reducing the permeability of fine and clay granular soils through the MICP (Microbiologically induced calcite precipitation). MICP is a natural biological ...
Riba i Romeva, Carles (Fecha de defensa: 1976-07-08)
A partir de la invenció dels mètodes de generació (finals del segle XIX) i de la posterior posta a punt de les màquines adequades per a utilitzar-los, el dentat cicloïdal ha estat progressivament substituït pel dentat ...
Puig Ortiz, Joan (Fecha de defensa: 2006-05-16)
La tesi "Estudi del mecanisme d'autoexcitació de bisell en el domini temporal" és un treball de recerca centrat en l'estudi dels instruments musicals que utilitzen el mecanisme de bisell per generar el so. L'objectiu de ...
Nápoles Alberro, Amelia (Fecha de defensa: 2019-09-10)
To contribute in the increase of the productivity and to the energetic saving in companies, the present thesis focuses the investigation on the process of grinding. The energetic efficiency grinding one depends on the ...
Acevedo Peñaloza, Carlos Humberto (Fecha de defensa: 2005-06-29)
La tesis ha centrado su estudio en los mecanismos de leva con palpador circular de traslación por ser éstos ampliamente utilizados en la industria actual. Para el diseño de la ley de desplazamiento se utiliza curvas de ...
Río Cano, Carlos (Fecha de defensa: 2022-04-20)
Heavy vehicles are generally equipped with Shock Absorber Suspension Cylinders, which, in addition to integrating in the same element, the damping and suspension mechanism, allow obtaining greater suspension travels, ...
Zougari, Ayoub (Fecha de defensa: 2014-10-17)
In the last decades, the problem of the vibrations and the noise generated by the rolling and the undulatory wear has been approached by multiple research groups. These groups have developed studies with the intention of ...
Flórez García, Luís Carlos (Fecha de defensa: 2020-09-09)
The objective of this work is to analyze the influence of assisted vibration, VAM, in the process of turning steel. Initially, the surface finish generated in a lathe displacement is studied utilizing a geometric intersection ...
Gómez Gras, Giovanni (Fecha de defensa: 2015-04-17)
The aim of this thesis is studying and characterizing a ball burnishing process assisted with vibrations. By introducing vibrations in the overall process, results are enhanced if compared to the ones derived from a ...
Travieso Rodríguez, José Antonio (Fecha de defensa: 2010-09-21)
Mejorar el acabado superficial de una pieza plana o cilíndrica, se puede hacer de manera relativamente sencilla, utilizando para ello un proceso de rectificado. Sin embargo lograr un buen acabado superficial en una superficie ...
Nuñez Espinoza, Juan Felipe (Fecha de defensa: 2008-06-26)
El concepto de redes sociales de comunicación rural, como una estructura relacional hecha por nodos que están vinculados por medio de actores tales como pequeños productores rurales, proyectos de desarrollo rural, ...
Toumanidou, Themis (Fecha de defensa: 2016-11-14)
The human spine provides mechanical support to the trunk while it protects the spinal cord and nerves from the external loads transferred during daily activities. Such loads are largely controlled by the spine muscles and ...
Babici, Laura Mariana (Fecha de defensa: 2023-12-21)
(English) In this study, the Weierstrass fractal function was used to model the surface roughness of railway tracks and, subsequently, the static coefficient of friction (COF) for Hertzian rail-wheel contact and cylinder-plane ...