Universitat Politècnica de Catalunya
Now showing items 39-58 of 80
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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, ...
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 ...
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 ...
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 ...
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 ...
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, ...
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 ...
(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 ...
(English) The primary goal of this thesis is to unlock the potential of hemp stalk, an agricultural byproduct that currently lacks practical applications. The overarching aim is to promote the use of eco-friendly materials, ...
As a type of renewable energy that can provide rapid response to the requirement of the power grid, hydropower plays a fairly important position in the energy market. In recent years, with the enormous entrance of new ...
La motivació d'aquesta tesi és entendre com pot ser gestionada la integració de coneixement en projectes de subcontractació estratègica de disseny de producte. Una participació activa de l'empresa durant la realització de ...
(English) The most common tremor disorders worldwide are Parkinson's Disease and Essential Tremor. The gold standard for diagnosing these movement disorders is medical evaluation by neurologists, but its accuracy depends ...
