Browsing by Subject "Ultrasonic waves"
Now showing items 1-20 of 46
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Alimentació adaptativa d'un generador d'ultrasons de potència basada en un convertidor ressonant paral.lel controlat per un DSC
(Universitat Politècnica de Catalunya, 2010-12-15)
Master thesis (pre-Bologna period)
Open AccessCatalà: Disseny i fabricació d'una font d'alimentació per a transductors d'ultrasons de potència. Font d'alimentació formada per un convertidor ressonant DC/AC i controlada per un DSC que corregeix la freqüencia de sortida ... -
Amplificador de potencia para excitación de arrays de ultrasonidos de media intensidad
(Universitat Politècnica de Catalunya, 2020-07)
Bachelor thesis
Open AccessThe objective of this Final Degree Project is framed within a line of work for the generation of acoustic fields through a grouping of transducers, excited by controlled amplitude and phase signals, with medium and high ... -
Computation of the Spatial Impulse Response for Ultrasonic Fields on the Graphics Processing Units (GPU)
(Universitat Politècnica de Catalunya, 2010-09-15)
Master thesis
Open Access
Covenantee: Australian National UniversityThe goal of the internship was to develop a linear wave-based simulation of ultrasonic fields. The theory was based on the Tupholme-Stepanishen formalism explained in the Jensen course for calculating pulsed ultrasound ... -
Conformado asistido por ultrasonidos del ácido poliláctico: Micropiezas cargadas con drogas antitumorales
(Universitat Politècnica de Catalunya, 2019-10-31)
Master thesis
Restricted access - author's decisionLos ultrasonidos en el procesado de polímeros han tenido aplicaciones como la soldadura y dispersión. Recientemente, los ultrasonidos han sido introducidos como una novedosa técnica parael micromoldeado de polímeros, y su ... -
Corruption identification and classification in standard plane prenatal ultrasounds
(Universitat Politècnica de Catalunya, 2020-09-09)
Master thesis
Open AccessArtificial Intelligence (AI) has proven in the recent years to be a powerful tool to automate simple and complex tasks. One of the main fields where it has been applied is medical science where especially computer vision ... -
Desarrollo de un pulser / amplificador para transductores de ultrasonidos
(Universitat Politècnica de Catalunya, 2020-06-29)
Bachelor thesis
Restricted access - confidentiality agreement -
Development of a handheld ultrasound receiver for the detection and identification of bat species
(Universitat Politècnica de Catalunya, 2016-09)
Master thesis (pre-Bologna period)
Open AccessThe BAT TUNE project is the development and production of a low cost heterodyne ultrasound receiver that is specifically designed for near professional activity monitoring of the different chiroptera species. The project ... -
Diseño y caracterización de un sonar de seguimiento basado en Arduino
(Universitat Politècnica de Catalunya, 2019-10-28)
Bachelor thesis
Open AccessIn this document, you will find all the required information to carry out the design and characterization of a tracking sonar based on Arduino. The project has an educational purpose and aims to provide the necessary ... -
Estudi de l'efecte dels ultrasons en les propietats reològiques de diferents midons presents en vegetals
(Universitat Politècnica de Catalunya, 2017-10-20)
Bachelor thesis
Open AccessNowadays there is deep interest in investigating the use of ultrasounds in the food industry because of its possible benefits when it comes to optimizing and improving processes. The main objective of this project is to ... -
Estudi per desenvolupar una pràctica docent d'inspecció amb ultrasons
(Universitat Politècnica de Catalunya, 2017-06-28)
Bachelor thesis
Open AccessEn aquest treball es realitza l’estudi per poder desenvolupar una pràctica docent d’inspecció amb ultrasons amb l’objectiu d’entendre els assajos dels ultrasons i tenir nocions per poder configurar i realitzar els assajos. ... -
Estudi tèrmic d'un soldador d'ultrasons refrigerat
(Universitat Politècnica de Catalunya, 2017-06-15)
Bachelor thesis
Restricted access - confidentiality agreement -
Experimental study of the propagation of acoustic waves by means of a Laser Doppler Vibrometer
(Universitat Politècnica de Catalunya, 2014-05-08)
Master thesis
Open AccessPropellant storage in space mi ssions could be more efficient with the ability to control the bubbles within the storage tanks. One of the effective options is to control bubbles using acoustic fields. The following ... -
Fully Noncontact Hybrid NDT for 3D Defect Reconstruction Using SAFT Algorithm and 2D Apodization Window
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-05-08)
Article
Open AccessNondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ... -
Generador de salvas para un sistema de ensayos no destructivos basado en ondas ultrasónicas guiadas
(Universitat Politècnica de Catalunya, 2011-09-27)
Master thesis (pre-Bologna period)
Open AccessEnglish: This PFC provides a design of a tested and specific tone-burst generator circuit for a Non-Destructive System based on ultrasonid guided waves. This circuit includes a complementary protection circuit for the NDT ... -
Generador de salvas para un sistema NDT basado en ultrasonidos
(Universitat Politècnica de Catalunya, 2010)
Master thesis
Open AccessEl trabajo del presente proyecto final de carrera (PFC), se enmarca dentro de un proyecto de investigación sobre ensayos no destructivos de materiales laminados, por ejemplo el papel, mediante señales ultrasónicas en ... -
High-precision time-of-flight determination algorithm for ultrasonic flow measurement
(2019)
Article
Open AccessCommercial time-of-flight (TOF) ultrasonic flowme- ters are rapidly expanding in the general industry. Among the different techniques that can be applied to determine the TOF of ultrasonic waves, the cross-correlation ... -
Implementation and integration of an experimental vehicle sensor setup for automated parking
(Universitat Politècnica de Catalunya, 2018-09-17)
Bachelor thesis
Open Access
Covenantee: Technische Universität DarmstadtThis thesis has been realized for the automotive engineering department of the TU-Darmstadt University. This department is currently carrying out research in the field of sensor modeling to support autonomous driving. ... -
Improving the robustness and performance of quantusFLM® against different delineations
(Universitat Politècnica de Catalunya, 2016-05-23)
Bachelor thesis
Open AccessBackground: Neonatal respiratory morbidity (NRM) is the leading cause of mortality and morbidity associated with baby prematurity birth. Traditionally, Fetal lung maturity (FLM) is determined by measuring pulmonary surfactant ... -
Innovation in an automotive industry of the welding points quality tests
(Universitat Politècnica de Catalunya, 2020-02-14)
Master thesis
Restricted access - author's decisionNowadays, to ensure the quality of the joining technics that are used in the automotive manufacturing for instance welding, brazing, clamping, bolting and screwing; manual inspections are made. Those inspections are made ... -
Lavado de tejidos de lana mediante agitación con ultrasonidos.
(Instituto de Investigación Textil y Cooperación Industrial, 1996-01)
Article
Open AccessSe realizó un estudio de la detergencia de tejido de lana Empa con suciedad standard en presencia de una emulsión de cloruro de metileno en agua mediante lecitina como emulsionante y utilizando una agitación de ultrasonidos.
