[EN] In this paper, the knock phenomenon is studied and characterized in the time-frequency domain. From the analysis results, a new knock event definition is proposed, which compares the excitation of the cylinder resonance ...
[EN] This paper analyses the in-cylinder pressure oscillations in internal combustion engines, which are initiated by combustion and resonate during the expansion stroke. A specific mathematical tool, which takes into ...
[EN] Short-to-medium span simply-supported (SS) railway bridges are prone to experience
high levels of vertical acceleration due to train passage. The necessity of predicting accurately
their dynamic behaviour for design, ...
Estupiñá Martos, Iván(Universitat Politècnica de València, 2022-10-10)
[EN] The Master's Thesis focuses on ground-borne vibrations caused by rail transit operating in urban environments, i.e., a class of relatively light and slow-moving trains that often run close to buildings and facilities. ...
Acebrón Fabregat, Javier; Moratal Pérez, David; Marti Bonmati, Luis; Brummer, Marijn Eduard(Institute of Electrical and Electronics Engineers (IEEE), 2011-03)
[EN] The main parallel imaging techniques have been implemented under MATLAB (SENSE, PILS and SPACE-RIP for image domain, and SMASH and GRAPPA for k-space domain), evaluating its characteristics about image quality and ...
Bernal Cortes, Patricia(Universitat Politècnica de València, 2020-01-10)
[ES] Esta investigación expone un proceso creativo que parte de la recolección y estudio de diversos archivos de la gráfica rupestre y una imbricación con el tao de la pintura Oriental.
La propuesta creativa propone una ...
[EN] This paper presents a model for on-line NOx estimation. The method uses both, low frequency components and high frequency components of in-cylinder pressure signal: it harnesses in-cylinder pressure resonance to ...
[EN] Accurate cylinder charge and composition estimation is crucial for proper combustion control, however, current sensors and models show different issues for transient estimation. The work presented in this paper combines ...
[EN] This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths (10 m < L< 25 m) belonging to conventional railway lines. These structures are susceptible to ...
Torstensson, P. T.; Nielsen, J. C. O.; Baeza González, Luis Miguel(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2011)
[EN] Vertical dynamic traintrack interaction at high vehicle speeds is investigated in a frequency range from about 20 Hz to 2.5 kHz. The inertial effects due to wheel rotation are accounted for in the vehicle model by ...
Robles Casas, José Manuel(Universitat Politècnica de València, 2022-09-16)
[ES] La tesis consiste en el estudio del uso de un amortiguador de masa para la supresión de oscilaciones en cargas suspendidas. Primeramente, se describirá en fenómeno vibratorio y de resonancia, además de una investigación ...
ISHIKAWA, Koichiro(Editorial Universitat Politècnica de València, 2009-12-01)
Spatial structures such as a gymnasium and an exhibition hall often use the ceiling because of sound effects. On the other hand, the ceiling members fell down on a large scale. This is the reason why it is needed to ...
Bares Moreno, Pau(Universitat Politècnica de València, 2015-03-09)
[EN] In-cylinder pressure signal has been largely used for analysing the combustion in reciprocating engines, mainly in test benches, although new engines are being designed with closed loop control based on the in-cylinder ...
Soler Sanchis, Carlos(Universitat Politècnica de València, 2018-09-12)
[EN] The port of Las Palmas is continually growing, owing especially to its situation, which gives major importance to studies to improve the operability and functionality of the port, concepts tied directly to the increase ...
Rodríguez Marco, José Enrique(Universitat Politècnica de València, 2018-10-16)
[ES] En este Trabajo Fin de Grado se trata el modelo del eje montado flexible rotatorio tanto en recta como en curva teniendo en cuenta los efectos giroscópicos e inerciales asociados a la rotación del mismo. En el trabajo ...
Sánchez Moreno, Francisco(Universitat Politècnica de València, 2019-06-28)
[EN] In the present study an analysis about Fluid-Structure Interaction (FSI) is carried out.The geometry is a rectangular flat plate which is attached by one of its sides to a squarecross section bar. This bar is in charge ...
Juan Segovia, Cristina de(Universitat Politècnica de València, 2016-05-17)
[EN] This research is based on the formal and stylistic analysis of the 3 Preludes for piano by Henri Dutilleux and stops at the identification, location and proposed resolution of the several difficulties techniques which ...
Palomino-Schätzlein, Martina; Escrig Aparici, Pablo Vicente; Boira Tortajada, Herminio; Primo Millo, Jaime; Pineda-Lucena, Antonio; Cabedo Escrig, Nuria(American Chemical Society, 2011-10-09)
13C nuclear magnetic resonance (NMR) spectroscopy was explored as a simple and efficient technique for the quantitative analysis of nonpolar metabolites in plants. The method was first optimized with a mixture of known ...
Grau Moreso, Alba(Universitat Politècnica de València, 2020-05-15)
[ES] En el siguiente trabajo ha sido realizado un análisis teórico del aerogenerador sin aspas inventado recientemente por Vortex Bladeless S.L. La aerodinámica y vibraciones mecánicas en él son estudiadas, así como la ...