Mostrando ítems 11-20 de 43
Sohrabi, Shahin (Fecha de defensa: 2022-03-11)
Active noise cancellation is a unique approach that helps passive noise control in reducing sound levels at low frequencies; nevertheless, successful use of active noise cancellation necessitates ...
Noori, Behshad (Fecha de defensa: 2019-07-19)
This dissertation is concerned with investigating the efficiency of dynamic vibration absorbers (DVAs) as measures to mitigate ground-borne vibrations induced by railway traffic in double-deck tunnels. ...
Farré Lladós, Josep (Fecha de defensa: 2015-04-28)
Manufacturers of wind turbines have observed a new phenomenon that appears in high power wind turbines: excessive wear in the teeth located at 0º in the pitch bearing. In order to design more efficient ...
Martín Román, Sara-Regina (Fecha de defensa: 2013-07-15)
The present thesis investigates a passive acoustic method to locate maneuvering aircraft. The method is based on the acoustical Doppler effect, as a particular effect of the signals received by a mesh ...
Sarabandi, Soheil (Fecha de defensa: 2021-04-27)
Since the map from quaternions to rotation matrices is a 2-to-1 covering map, this map cannot be smoothly inverted. As a consequence, it is sometimes erroneously assumed that all inversions should ...
Karimi, Shadi (Fecha de defensa: 2020-05-11)
The research is motivated by real applications, such as pasteurization plant, water networks and autonomous system, which each of them require a specific control system to provide proper management able ...
Zhao, Weiqiang (Fecha de defensa: 2021-07-21)
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 ...
Madadi, Hojjat (Fecha de defensa: 2014-01-17)
Recently, the emergence of lab-on-a-chip devices has seen in a variety of applications especially in clinical analys is and diagnostics. ln particular the lack of suitable microdevices for separation ...
Jerez Mesa, Ramón (Fecha de defensa: 2018-03-02)
This dissertation is an experimental research project into the mechanical effects of the ultrasonic vibration-assisted ball burnishing process on the surface integrity of surfaces machined through ...
Arnau Cubillo, Albert (Fecha de defensa: 2020-04-03)
Since the first models developed in the late 19th century, the applications of piezoelectric materials have been progressively growing in number. The capacity of these materials to couple electric and ...
621 - Ingeniería mecánica en general. Tecnología nuclear. Electrotecnia. Maquinaria (27)
531/534 - Mecánica. Vibraciones. Acústica (11)
620 - Ensayo de materiales. Materiales comerciales. Economía de la energía (5)
68 - Industrias, oficios y comercio de artículos acabados. Tecnología cibernética y automática (5)