Дисертації з теми "Ship and Platform Structures"
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Largiadèr, Caspar Andri 1965. "Modular platform based surface ship design." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/91331.
Повний текст джерелаIncludes bibliographical references (leaves 97-99).
by Caspar Andri Largiadèr.
S.M.in Naval Architecture and Marine Engineering
Cannon, Stuart Martin. "Materials selection for ship structures." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294827.
Повний текст джерелаYu, Lei. "Fatigue reliability of ship structures." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/2259/.
Повний текст джерелаKeller, Joe, James Ivey, Antonios Dalakos, Orhan Okan, Ryan Kuchler, Rabon Cooke, Brad Stallings, et al. ""SEA ARCHER" Distributed Aviation Platform." Thesis, Monterey, California. Naval Postgraduate School, 2001. http://hdl.handle.net/10945/7277.
Повний текст джерелаThis report outlines the results of a two quarter Total Ship Systems Engineering (TSSE) Capstone design project undertaken by the students at the Naval Postgraduate School. The project was under the direction of Professors C.N. Calvano and R.Harney.
Currently, no system exists that provides a sea-based distributed aviation platform capability. The emergence of Unmanned Air Vehicles (UAVs) / Unmanned Combat Air Vehicles (UCAVs), the continued U.S. Navy focus on the littorals, the desire for force distribution, the need for operational cost reductions, and the advent of Network Centric Warfare (NCW) all continue to support the requirement to re-evaluate how littoral operations will be conducted in the future. Given this background, a bottom-up design of a ship supporting a primarily UAV/UCAV air wing in a low to medium threat environment is of significant interest. SEA ARCHER meets this interest. This report outlines a design that meets the future needs for distributed aviation with a high-speed, highly automated platform. Large gains in reduced manning through automated systems for both operation and damage control helpmeet the demanding needs for the future of the Navy at reduced operational costs. The report will outline both the Mission Needs Statement (MNS) and Operational Requirements Document (ORD) for the ship that was developed. The analysis of alternatives that was conducted to determine relative size requirements for the ship in presented in the next section. The concept design that resulted as a result of the Total Ship Systems Engineeing process in then presented. Finally, a detailed look at the analysis and trade studies that were conducted in presented in order to show the more detailed analysis that was conducted in designing the ship.
Lin, Tian Ran. "Vibration of finite coupled structures, with applications to ship structures." University of Western Australia. School of Mechanical Engineering, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0093.
Повний текст джерелаLin, Tian Ran. "Vibration of finite coupled structures, with applications to ship structures /." Connect to this title, 2005. http://theses.library.uwa.edu.au/adt-WU2006.0093.
Повний текст джерелаBeson, Simon Derek. "Progressive collapse assessment of lightweight ship structures." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/1445.
Повний текст джерелаUnderwood, J. "Strength assessment of damaged steel ship structures." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/355704/.
Повний текст джерелаAsadi, Ghasem Vaez-Zadeh. "Dynamic response of ship structures to impact loads." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29310.
Повний текст джерелаApplied Science, Faculty of
Mechanical Engineering, Department of
Graduate
Han, Yongqing. "Crack arrest toughness of weldments for ship structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/MQ43341.pdf.
Повний текст джерела繆泉明 and Quanming Miao. "Effect of submerged vertical structures on ship waves." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B3025176X.
Повний текст джерелаHan, Yongqing Carleton University Dissertation Engineering Civil and Environmental. "Crack arrest toughness of weldments for ship structures." Ottawa, 1999.
Знайти повний текст джерелаMiao, Quanming. "Effect of submerged vertical structures on ship waves /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23765902.
Повний текст джерелаPhillips, Holly Jacqueline. "Assessment of damage tolerance levels in FRP ship structures." Thesis, University of Southampton, 1997. https://eprints.soton.ac.uk/361131/.
Повний текст джерелаLiu, Zhenhui. "Analytical and numerical analysis of iceberg collisions with ship structures." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15790.
Повний текст джерелаBarber, Matthew Edward. "Experimental and computational determination of global resonances in ship structures." Thesis, Springfield, Virginia: Available from National Technical Information Service, 1991. http://hdl.handle.net/10945/28198.
Повний текст джерелаToscano, David (David P. ). Carleton University Dissertation Engineering Civil and Environmental. "Post yield behaviour of transversely loaded icebreaking ship hull structures." Ottawa, 1995.
Знайти повний текст джерелаZoet, Petrus Gosse. "Component mode synthesis for ship structures : investigation into an alternative approach." Thesis, University of Strathclyde, 2013. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=24881.
Повний текст джерелаManeepan, Komsan. "Genetic algorithm based optimisation of FRP composite plates in ship structures." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/52012/.
Повний текст джерелаBalaji, R. "Collisions of tension leg platforms with ships." Thesis, University of Southampton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380192.
Повний текст джерелаKumar, Anil. "Estimation and Mapping of Ship Air Wakes using RC Helicopters as a Sensing Platform." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/82910.
Повний текст джерелаPh. D.
Zubaydi, Achmad. "Use of neural networks for the identification of damage in ship structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ62462.pdf.
Повний текст джерелаYang, Park Dal Chi. "Energy absorption and collapse of ship structures with particular reference to collisions." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339754.
Повний текст джерелаBlinn, Bart A. "Flexlab a flexible structure controls test platform." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177609627.
Повний текст джерелаSmit, Philip Ethelbert. "Development of a 3-DOF motion simulation platform." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4155.
Повний текст джерелаENGLISH ABSTRACT: The successful development of a three degree of freedom motion simulation platform, capable of simulating a vessel’s flight deck at sea, is presented. The motion simulation platform was developed to practically simulate and test an unmanned aerial vehicle’s capability of landing on a moving vessel, before practically being demonstrated on an actual vessel. All aspects of the motion simulation platform’s development are considered, from the conceptual design to its practical implementation. The mechanical design and construction of a pneumatic motion simulation platform, as well as the electronics and software to enable the operation of this motion simulation platform, are presented. Mathematical models of the pneumatic process and platform orientation are developed. A controller architecture capable of regulating the pneumatic process, resulted in the successful control of the motion simulation platform. Practical motion simulation results of one of the South African Navy Patrol Corvettes, demonstrate the motion simulation platform’s success. The successful development of the motion simulation platform can largely be attributed to extensive research, planning and evaluation of the different development phases.
AFRIKAANSE OPSOMMING: In hierdie studie word die suksesvolle ontwikkeling van ’n drie-grade-van-vryheid bewegingsimulasieplatform, wat in staat is daartoe om ’n skip se vliegdek ter see te simuleer, aangebied. Die bewegingsimulasieplatform is ontwikkel om ’n onbemande lugvaartuig se vermoë om op ’n bewegende skip te land, te simuleer en te toets, voor dit op ’n werklike skip gedemonstreer word. Alle aspekte van die ontwikkeling van die bewegingsimulasieplatform word in ag geneem – van die konsepontwerp tot die praktiese implementering daarvan. Die meganiese ontwerp en konstruksie van ’n pneumatiese bewegingsimulasieplatform word bespreek, sowel as die elektronika en programmatuur wat die werking van hierdie bewegingsimulasieplatform bemoontlik. Wiskundige modelle van die pneumatiese proses en platformoriëntering word ontwikkel. ’n Beheerderargitektuur wat in staat is daartoe om die pneumatiese proses te reguleer, lei tot die suksesvolle beheer van die bewegingsimulasieplatform. Praktiese resultate van die bewegingsimulering van een van die Suid-Afrikaanse Vloot se patrolliekorvette wys daarop dat die bewegingsimulasieplatform wel suksesvol is. Die geslaagde ontwikkeling van die bewegingsimulasieplatform kan grootliks toegeskryf word aan omvangryke navorsing, beplanning en evaluering van die onderskeie ontwikkelingsfases.
Mohammed, Abuu Khalifa. "Nonlinear Shell Finite Elements for Ultimate Strength and Collapse Analysis of Ship Structures." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-79.
Повний текст джерелаThe present thesis deals with ultimate strength and collapse analysis of ship structures. Within this are, the attention is directed towards simple and efficient nonlinear finite element models for stiffened plate panels in ship structures. Several types of Morley elements are investigated and two are selected for further development. These triangular elements assume constant stress distribution over the element area.
The first element considered is a nonlinear facet shell element which is valid within moderate rotations. Its elastic formulation has been proposed earlier. In this work, the element matrices are extended to account for material plasticity. The second element, is a displacement-based curved element which undergoes arbitrary large displacements and rotations. The discrete equilibrium equations for this element are re-derived so as to make them more efficient with standard Newton-Raphson solution procedures.
Material plasticity formulation using through-the thickness integration as well as resultants plasticity is presented. The evolution laws are derived from the natural laws of thermodynamics, and a return mapping algorithm with a backward Euler difference scheme is used for a solution of the evolution equations. The plasticity computations involve a solution of a single scalar yield surface for the plasticity multiplier. By performing the matrix algebra analytically, simple and explicit expressions are derived. These equations reduce the computational costs remarkably.
Numerical examples, mostly selected from well-know benchmark problems, are presented to demonstrate the performance of the proposed formulations. Very good agreement is obtained when compared with published results. In addition, typical problems for ultimate strength and collapse analysis of ship hull-girder are analyzed. These include plate girders, stiffened plate panels, as well as a cruciform element. The results show good agreement not only with those obtained from commercial finite element programs, but also from the experimental observations. For stiffened plate panels, comparison is made with DNV design rules, which is found to give non-conservative estimates for some load conditions.
Finally, a study on multi-span stiffened panels is performed so as to compare the estimates provided by the conventional single span model. It is observed that the conventional model provides conservative estimates, and the effect of transverse frames is especially significant on the finite element model of stiffened panels.
Glenwright, David George. "An experimental and finite element investigation of added mass effects on ship structures." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26701.
Повний текст джерелаApplied Science, Faculty of
Mechanical Engineering, Department of
Graduate
Pahos, Spiro J. "Reliability-based vulnerability requirements for asymmetric threats in the design of ship structures." Thesis, University of Strathclyde, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570447.
Повний текст джерелаAksu, Seref. "Steady state and transient responses of flexible ship structures travelling in irregular seaways." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334385.
Повний текст джерелаMcGowan, David. "Ultimate capacity of offshore platform conductor strings." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41703.
Повний текст джерелаMaster of Science
Hifi, Nabile. "Decision support system for risk-based inspection and maintenance planning for ship hull structures." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25552.
Повний текст джерелаMcCoy, Kevin Michael. "Identification and alteration of global resonance modes in ship structures to reduce sound radiation." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/10945/42110.
Повний текст джерелаA ship hull and foundation structure will have many vibratory resonance modes. During the shipbuilding process on land or in a drydock, it would be highly advantageous to determine which of these modes have a potential for strong sound radiation when the ship is waterborne. This research employs an experimental model of a submarine hull and foundation. Small masses are placed on the foundation and hull, and the effects on the vibration spectra of the structure are studied. Based on spectra response, modes are classified as hull modes, foundation modes, or "global" modes. Global modes are well coupled hull and foundation mode pairs which are closely spaced in frequency. Waterbome testing reveals that global mode pairs are strong waterbome sound radiators. Additionally, the application of small masses is shown to perturb the coupling between the global mode pairs and yield dramatic changes in the radiated sound. Four foundations of differing size are tested and repeatability of the experimental results is confirmed. As the foundation size increases, global modes are identified on the basis of foundation drive point vibration spectra alone, hull vibration data is not required.
Syrigou, Maria. "Progressive collapse assessment of intact and damaged ship structures under combined bending and torsional loading." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3793.
Повний текст джерелаVishnubhotla, Srinivas. "A New Method to Predict Vessel Capsizing in a Realistic Seaway." ScholarWorks@UNO, 2007. http://scholarworks.uno.edu/td/588.
Повний текст джерелаBellstedt, Philip. "The design, implementation of a moving platform landing algorithm for an unmanned autonomous helicopter." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96780.
Повний текст джерелаENGLISH ABSTRACT: With a view to future ship deck landings, a moving platform landing algorithm for an unmanned autonomous helicopter was successfully designed and a number of systems were developed in order to implement the landing algorithm. Through a combination of an MCA-based ship motion prediction algorithm and the appropriate analysis of platform motion criteria, a system was developed which can identify valid landing opportunities in real ship motion data recorded at sea state 4 for up to 5 s into the future with a 75% success rate. The bandwidth of the heave motion estimator and controller of the helicopter were increased by the implementation of GPS latency compensation, and velocity and acceleration feed forward terms respectively. The resulting bandwidth of at least 0.2 Hz is sufficient to track the heave motion of a platform which is simulating the motion of a ship at sea state 4 or lower. After the various systems were integrated they were coordinated in a landing state machine. A stationary platform landing was demonstrated successfully during flight tests, verifying the functionality of the landing state machine and the integration of the system. Landings on a platform simulating the motion of a ship at sea state 4 were demonstrated successfully in hardware-in-the-loop simulations.
AFRIKAANSE OPSOMMING: Met die oog op toekomstige skip dek landings, is 'n bewegende platformlandingsalgoritme vir 'n onbemande outonome helikopter suksesvol ontwerp en 'n aantal stelsels ontwikkel om die landingsalgoritme te implementeer. Deur 'n kombinasie van 'n MCA-gebaseerde skipbewegingvoorspellingsalgoritme en die toepaslike ontleding van platformbewegingkriteria, is 'n stelsel ontwikkel wat geldige landingsgeleenthede in realeskipbewegingsdata kan identifiseer. Vir skipbewegingsdata wat by seetoestand 4 opgeneem is kan landingsgeleenthede 5 s in die toekoms met ‘n 75% sekerheid identifiseer word. Die bandwydte van die afgeebewegingafskatter en beheerder van die helikopter is deur die implementering van GPS vertragingkompensasie, en snelheid en versnelling vorentoe-voer terme onderskeidelik verhoog. Die gevolglike bandwydte van minstens 0.2 Hz is voldoende om die afgeebeweging van 'n platform te volg wat die beweging van 'n skip by seetoestand 4 of laer simuleer. Nadat die stelsels geïntegreer is is hulle gekoördineer in 'n landingtoestandsmasjien. 'n Stilstaande platform landing is suksesvol gedemonstreer tydens vlugtoetse, wat die funksionaliteit van die landingtoestandsmasjien en die integrasie van die stelsel bewys. Landings op 'n platform wat die beweging van 'n skip by seetoestand 4 simuleer is suksesvol in hardeware-in-die-lus simulasies gedemonstreer.
Qian, Liyuan. "An interwoven visualization platform for assessing : the restoration of fragmented landscape structures." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/404379.
Повний текст джерелаEl proceso de restauración del paisaje en zonas altamente contaminadas se ve influido por las interacciones complejas entre varios elementos del medio ambiente; estos están interconectados a través del medio integral de la estructura del paisaje que se compone de corredores, pasillos y matrices. En este estudio, investigo la estructura del paisaje con un modelo de monitorización del medio ambiente, configurado con visualización en tiempo real de alta definición, para evaluar el proceso de control de la contaminación y la restauración de la capa superior del suelo en ambas zonas, restauradas y no restauradas. Usando una plataforma de evaluación del impacto ambiental visual unificada, evalúo una simulación a partir de julio de 1999 y julio de 2014. Llego a la conclusión de que, con 5m X 5m de resolución del vehículo aéreo no tripulado (VANT), y 30 m X 30 m de resolución del satélite Landsat (combinando SIG, ENVI, Rhino y Grasshopper), el modelo capta las principales características de temperatura de la superficie observada, la vegetación y la variación de la hidrología en la zona investigada. La representación visual más precisa de la temperatura en superficies complejas, las variaciones de la vegetación y la simulación de la hidrología explícita en diferentes grados de resolución, mejoran significativamente la evaluación eficiente e integral del proceso de restauración, en particular, en relación con el análisis de la visualización de la estructura del ecosistema del paisaje dañado. Llego así a la conclusión de que existe un gran potencial para mejorar la precisión de esta plataforma infográfica de evaluación del impacto ambiental en la restauración a través del uso de modelos de alta capacidad de visualización para desarrollar este tipo de estudios en el futuro. 1) Esta es la primera vez que se aborda en su conjunto el estado de las condiciones existentes de las estructuras del paisaje severamente afectadas, antes de investigar como reparar los daños causados por las diferentes condiciones de perturbación. Por lo tanto, en el capítulo 1, los temas del mosaico fragmentado, los corredores y la matriz se examinan como casos con los que analizar las condiciones existentes de fuerte fragmentación de la estructura del paisaje, lo que permitirá hallar el índice ambiental correcto para cada una de las diferentes evaluaciones de la estructura fragmentada en el Capítulo 3. 2) En segundo lugar, investigo una serie de las respuestas de restauración que se han aplicado a distintos lugares, estructuras fragmentadas y diferentes grados y tipos de perturbación. Los siguientes casos de restauración en el Capítulo 2 muestran que el mismo tipo de fragmentación puede dar lugar a condiciones o estados diferentes. Estos incluyen la restauración de áreas fragmentadas ya sea de vuelta a su estado natural original, o a un nuevo estado modificado, o en otros casos utilizando no la restauración sino meramente la aplicación a las mismas de un nuevo estatus como obras de arte. En resumen, me encuentro con que los criterios aplicables a la restauración del paisaje pueden aparecer a través de la experiencia, o incluso a través del fracaso, a través del cual podemos hallar la dirección correcta a seguir en futuras restauraciones. 3) En el Capítulo 3, presentamos dos casos prácticos de utilización de nuestra plataforma de visualización para evaluar la situación en dos zonas de vertedero situadas ambas en lugares de gran relevancia desde el punto de vista paisajístico y, también en los dos casos, próximos a dos ciudades importantes que han experimentado en los últimos años intensos procesos de transformación: la restauración paisajística del vertedero del Garraf, cerca de Barcelona, y la monitorización de la evolución de la zona de vertedero, aun no restaurada, en las proximidades de la ciudad de Lhasa, capital de Tibet
Yucel, Kivanc. "3d Modeling Of Salt Related Structures In The Friesland Platform, The Netherlands." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612240/index.pdf.
Повний текст джерелаMoatsos, Ioannis. "Ultimate strength of ship structures including thermal and corrosion effects : a time variant reliability based approach." Thesis, University of Glasgow, 2005. http://theses.gla.ac.uk/5326/.
Повний текст джерелаBrunner, Dominik. "Fast boundary element methods for large-scale simulations of the vibro-acoustic behavior of ship-like structures." Tönning Lübeck Marburg Der Andere Verl, 2009. http://d-nb.info/99703128X/04.
Повний текст джерелаShang, Jie. "Development of an Open Source Platform for Monte Carlo Simulation of Paper Structures." Thesis, Uppsala University, Department of Information Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-103034.
Повний текст джерелаPaper is a very complex optical material, and for optimization of the optical properties of paper, different advanced models of the interaction of light with complex structures have been studied. Among these models, the Monte Carlo model has been chosen and its routines have been developed for different purposes in previous projects. In order to make this type of simulations more accessible, and future contributions from the scientific communities easier to apply, the main goal of this project is to develop an open source simulation platform named OpenPaperOpt for light scattering simulation from fiber networks. As part of this project, this thesis aims to integrate the P3D model which was previously implemented and tested on the OpenPaperOpt. After the integration, the OpenPaperOpt platform has a general lights scattering process on the static fiber network. The thesis then gives guidelines for further development of different network models.
Smithwick, Daniel J. II (Daniel John). "Architectural Design 2.0 : An online platform for the mass customization of architectural structures." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/57554.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 111-112).
Not only are there incredible inefficiencies in the current practice of design, fabrication and construction of architecture, but, until now these processes have been limited to costly design professionals, wasteful manufacturing facilities and labor-intensive site work. Architectural Design 2.0 is a vision for rethinking these processes in order to empower consumers and users of architecture with the tools and resources necessary that will enable them to design and produce their own mass customized architectural structures. Such a change will be achieved by integrating digital fabrication technologies with the massive shift in Internet usage behavior commonly known as Web 2.0. This thesis begins with an historical framework of user-generated design and production in architecture and follows with an introduction to a digital-to-physical translation procedure that harnesses digital fabrication with an online open-source design platform. Finally, this thesis provides evidence of a working model for Architectural Design 2.0 by delivering a set of user-generated, full-scale prototypes.
by Daniel J. Smithwick.
S.M.
Wu, Xiong-Jian. "Motion and wave load analyses of large offshore structures and special vessels in waves." Thesis, Brunel University, 1990. http://bura.brunel.ac.uk/handle/2438/7865.
Повний текст джерелаAcosta, Capilla Laura Karen. "Engineering of photonic structures based on nanoporous anodic alumina as an optical sensing platform." Doctoral thesis, Universitat Rovira i Virgili, 2021. http://hdl.handle.net/10803/672982.
Повний текст джерелаSe ha demostrado que las propiedades ópticas de la alúmina nanoporosa dependen intrínsecamente de su arquitectura, lo que hace posible modular su indice de refracción para fabricar materiales avanzados con propiedades ópticas únicas como las estructuras fotónicas. Esta tesis tiene como objetivo principal, la fabricación de estructuras fotónicas basadas en Alúmina Nanoporosa. Las estructuras fotonicas fueron fabricadas con alúmina nanoporosa (NAA-PSs) mediante la anodización de aluminio con diferentes perfiles de anodización (sinusoidal y gaussiano) así como la fabricación de microcavidades ópticas. Se estudiaron sus propiedades ópticas y su influencia cuando el tamaño de poro es mayor. Una vez fabricadas y caracterizadas, las NAA-PSs fueron evaluadas como plataformas para desarrollar sensores ópticos mediante la técnica de espectroscopia interferométrica reflectante (RIfs). Las estructuras fueron analizadas usando diferentes concentraciones de glucosa, soluciones de alcoholes y cloruro de sodio. Se probaron con diferentes tamaños de poro así como con diferentes tipos de estructuras modificando los parámetros de fabricación. Con los resultados obtenidos en esta tesis doctoral, se demostró que las estructuras fotonicas basada en alúmina nanoporosa tienen la capacidad de ser usadas como una plataforma con potencial para desarrollar sensores ópticos.
The optical properties of nanoporous alumina have been shown to be intrinsically dependent upon its architecture, making it possible to modulate its refractive index to fabricate advanced materials with unique optical properties such as photonic structures. This thesis has as its main objective, the manufacture of photonic structures based on Nanoporous Alumina. The photonic structures were fabricated with nanoporous alumina (NAA-PSs) by anodizing aluminum with different anodizing profiles (sinusoidal and Gaussian) as well as the fabrication of optical microcavities. Its optical properties and its influence when the pore size is larger were studied. Once manufactured and characterized, the NAA-PSs were evaluated as platforms to develop optical sensors using the reflective interferometric spectroscopy (RIfs) technique. The structures were analyzed using different concentrations of D-glucose, alcohol solutions and sodium chloride. They were tested with different pore sizes as well as with different types of structures by modifying the fabrication parameters. With the obtained results in this doctoral thesis, iwas demonstrated that photonic structures based on nanoporous alumina have the ability to be used as a potential platform to develop optical sensors.
Sönmez, Nurcan. "Investigating Wind Data and Configuration of Wind Turbines for a Turning Floating Platform." Thesis, KTH, Mekanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-148957.
Повний текст джерелаTsarouchas, Ioannis. "Through life reliability of a bulk carrier." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368736.
Повний текст джерелаPiglionica, Andrea. "Structural analysis and re-design of SPM platform in the Adriatic sea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Знайти повний текст джерелаMadhani, Jehangir T. "Sloshing motion of water in a moonpool." Thesis, University of Strathclyde, 1985. https://eprints.qut.edu.au/41649/1/Sloshing_Motion_of_water_in_a_moonpool.pdf.
Повний текст джерелаMathiowetz, Sebastian [Verfasser], Michael [Akademischer Betreuer] Möser, and Andrew [Akademischer Betreuer] Moorhouse. "Prediction of structure-borne sound power injection by vibrational sources with a focus on ship structures / Sebastian Mathiowetz. Gutachter: Michael Möser ; Andrew Moorhouse." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1066550654/34.
Повний текст джерелаOberhagemann, Jan [Verfasser], and Bettar O. el [Akademischer Betreuer] Moctar. "On Prediction of Wave-Induced Loads and Vibration of Ship Structures with Finite Volume Fluid Dynamic Methods / Jan Oberhagemann ; Betreuer: Bettar O. el Moctar." Duisburg, 2017. http://d-nb.info/1125371374/34.
Повний текст джерелаZhang, Jian. "Hydrodynamic behavior of packed-bed reactors on a floating platform : liquid distribution and drainage dynamics." Doctoral thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/68634.
Повний текст джерелаTo fill the gap between increasing energy demand and depletion of onshore hydrocarbon production, offshore hydrocarbon exploitation is increasingly contemplated especially the gas/oil fields in the deeper water. Meantime, large amount of deployed processing units for hydrocarbon productions must comply with the environmental codes designated for maritime protection. Systems such as embarked packed-bed reactors and scrubbers inevitably become one of the most promising options to achieve both purposes. Numerous efforts in literature to unveil the hydrodynamics of multiphase flow in packed beds reveal that challenges persist either in their design/scale-up or during the operations. Moreover, exposing these reactors to harsh marine conditions such as the convolution of ship dynamics and hydrodynamics inside packed-bed reactors leads to even more complex situations to maintain the proper operation performance of packed-bed reactors under floating conditions. A lot of evidence from literature has pointed out the failure of random and structured packings and open-cell foams, to prevent liquid maldistribution in packed beds destined to operate on-board sailing ships and floating platforms. Research efforts must therefore continue in the quest for robust internals capable of resilience against liquid maldistribution in gas-liquid reactors/separation units. The proposed Ph.D. research aims at firstly following a sound path to adapt commercially existing internals being capable of preserving performance similar to landbased packed beds. To the best of literature exploring, the sensitivity and susceptibility of monolith reactors to maldistribution subjected to offshore conditions have yet to be investigated. Rather than focusing on a study of monolith beds alone, Chapter 1 opts for a broader experimental campaign including a random packing and an open-cell foam packing for the sake of systematic comparisons of the liquid distribution under floating conditions. Liquid distribution of embarked columns packed with various internals under wide gas/liquid flow range is systematically compared with the assistance of wire mesh sensor (WMS) and six-degree-of-freedom emulator hexapod. Severe offshore weather conditions threaten the operation safety of floating packed beds especially encountering extreme situations such as cyclone, iceberg episodes and so forth. To ensure the safety of staff and facilities, the onboard packed columns must be immediately shutdown to avoid critical safety concerns under such circumstances. Therefore, knowledgebase of liquid draining dynamics in floating packed beds is the essence to ensure timely discharge of liquid. Nevertheless, the study regarding liquid drainage dynamics of packed beds under floating conditions is scarce to say the least. Then, Chapter 2 compares liquid draining of packed columns embarking on floating platforms with static land-based one experimentally. Other than that, the influence of ship motions (e.g., roll, roll & pitch, heave etc.) with different oscillation amplitudes and periods on liquid draining dynamics is investigated to deepen the insights. vi In parallel with the experimental study, a 3D transient Euler-Euler CFD model is employed as a supplementary analysis to further deepen the understanding of liquid drainage dynamics in floating packed beds. More factors possibly affecting the draining dynamics are exploited by numerical simulation. Consequently, Chapter 3 highlights the comprehensive influence of liquid properties, bed structure and moving types instead of focusing on impact of movements alone. Meanwhile, with sufficient body of experimental campaign, the validity and accuracy of model are strongly endorsed.