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Relevant bibliographies by topics / Bulk Modulus / Dissertations / Theses

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Dissertations / Theses on the topic 'Bulk Modulus'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Balasubramanian, Karthik. "Smart bulk modulus sensor." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002824.

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2

Loveday, J. S. "Skin effect measurements of the bulk modulus of potassium." Thesis, University of Bristol, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233723.

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3

Huang, Shu. "Influence of Chemical Composition and Water on the Bulk Modulus of Pyrope." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1185.

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Garnets are major silicates from the upper mantle to the transition zone. Elastic properties of garnets are essential to interpret the variation of seismic velocities at different depths and construct a model of the Earth’s composition. Due to the chemical flexibility at octahedron sites of the crystal structures, garnets usually exist with multiple components and have many composition variations. Pyrope is an important member in the garnet group. Fe2+-Mg2+ substitution in pyrope is one of the common solid solutions. We have synthesized and measured three synthetic solid solutions samples (Py8

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4

Rusia, Devendra Kumar. "A modified viscoplastic formulation for large deformations using a bulk modulus approach." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183058011.

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5

Common, David N. "Development of a system for the measurement of the static bulk modulus of fluids." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17579.

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6

Michael, Paul W., and Shreya Mettakadapa. "Bulk Modulus and Traction Effects in an Axial Piston Pump and a Radial Piston Motor." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200173.

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This paper describes an investigation into the effects of fluid bulk modulus and traction coefficient properties on piston pump flow losses and radial pison motor torque losses through experimentation, modelling and simulation. Synthetic ester, high bulk modulus, multi-grade, and single grade mineral oils were evaluated. The high bulk modulus fluid exhibited 20% lower pump case and compensator flow losses than a conventional mineral oil of the same viscosity grade. Low traction coefficient fluids reduced the lowspeed torque losses of the radial piston motor by 50%. Physical models for pump cas

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7

Njane, Stephen Njehia. "Precise Fish Volume Estimation Using Underwater Helmholtz Resonance." Kyoto University, 2019. http://hdl.handle.net/2433/244557.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第22076号<br>農博第2368号<br>新制||農||1072(附属図書館)<br>学位論文||R1||N5230(農学部図書室)<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授近藤直, 准教授小川雄一, 教授飯田訓久<br>学位規則第4条第1項該当

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8

Yang, Shudong, Aihua Tao, Yulin Luo, Junxiang Zhang, Peng Zhou, and Lin Zhou. "Experimental measurements of bulk modulus for two types of hydraulic oil at pressures to 140MPa and temperatures to 180°C." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199503.

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Bulk modulus of hydraulic oil represents the resistance of hydraulic oil to compression and is the reciprocal of compressibility. The bulk modulus is a basic thermodynamic property of hydraulic oil that has a very important influence on work efficiency and dynamic characteristics of hydraulic systems, especially for the hydraulic systems at ultra-high pressure or ultra-high temperature. In this study, a bulk modulus experimental equipment for hydraulic oil was designed and manufactured, two types of hydraulic oil were selected and its isothermal secant bulk modulus were measured at pressures t

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9

Lombardo, Nick, and e56481@ems rmit edu au. "Properties of Composites Containing Spherical Inclusions Surrounded by an Inhomogeneous Interphase Region." RMIT University. Mathematical and Geospatial Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080408.143315.

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The properties of composite materials in which spherical inclusions are embedded in a matrix of some kind, have been studied for many decades and many analytical models have been developed which measure these properties. There has been a steady progression in the complexity of models over the years, providing greater insight into the nature of these materials and improving the accuracy in the measurement of their properties. Some of the properties with which this thesis is concerned are, the elastic, thermal and electrical properties of such composites. The size of the spherical inclusion

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10

Pereira, Amanda Cavalcante. "Influência da profundidade e de um processo de envelhecimento acelerado em propriedades de resinas bulk fill." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/23/23140/tde-15022018-101701/.

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O presente estudo teve como objetivo avaliar o desempenho de quatro resinas bulk fill (Filtek Bulk Fill (FBF), Opus Bulk Fill (OBF), Sonicfill (SF) e Tetric N-Ceram Bulk Fill (TNBF)) e uma resina convencional (Charisma Diamond (CD)) quanto às seguintes propriedades: resistência à flexão (RF), módulo de elasticidade (ME) e dureza Knoop (KHN) em função da profundidade e após a realização de um envelhecimento acelerado. Corpos de prova em formato de barra foram confeccionados simultaneamente em diferentes profundidades (1, 2, 3, 4 e 5 mm) para realização dos testes de resistência à flexão (n=10),

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11

Freitas, Iberê Cruz. "A influência da etapa de fixação do processo de texturização por falsa torção no volume do fio de poliéster texturizado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/100/100133/tde-16092014-213609/.

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A propriedade volume do fio texturizado é importante por questões estéticas e funcionais. O volume do fio pode garantir que um produto tenha bom desempenho mecânico tanto na produção dos artigos (como na tecelagem, malharia e acabamento) quanto para as aplicações finais dos produtos (produtos com alto fator de cobertura, com elasticidade, isolamento térmico etc.). A texturização por falsa torção fixada é um importante processo industrial que possui dentre os principais objetivos o aumento de volume. A etapa de fixação consiste em um tratamento térmico do fio ao final do processo, por meio da p

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12

Arias, Evelyn Patricia Santos. "Avaliação do grau de conversão, dureza e módulo de elasticidade de resinas compostas Bulk Fill." Universidade Estadual de Ponta Grossa, 2018. http://tede2.uepg.br/jspui/handle/prefix/2622.

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Submitted by Eunice Novais (enovais@uepg.br) on 2018-09-06T21:57:41Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) EVELYN PATRICIA SANTOS ARIAS.pdf: 1455330 bytes, checksum: 8883f664c636c5ec3e0625c691880784 (MD5)<br>Made available in DSpace on 2018-09-06T21:57:41Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) EVELYN PATRICIA SANTOS ARIAS.pdf: 1455330 bytes, checksum: 8883f664c636c5ec3e0625c691880784 (MD5) Previous issue date: 2018-04-24<br>O objetivo deste estudo foi avaliar o grau de conve

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13

Lu, Li Rong. "Topology optimization of acoustic metamaterials." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/189362.

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14

Johnson, Eleda. "The Elastic Behavior of Plagioclase Feldspar at High Pressure." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/36450.

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Feldspars are one of the archetypical families of framework silicates. They not only comprise around 60% volumetrically of the Earthâ s crust, but are among some of the most structurally complicated minerals. Investigation into the structural behavior of various intermediate plagioclases at pressure has been undertaken with the intent of categorizing the elastic behavior with pressure across the solid solution series and establishing a conceptual model to characterize feldspar compression. Complex behavior has been observed in the Equation of State for plagioclase feldspars in excess of 3 GPa

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15

Thornton, Ben Johnston. "Parameter Evaluation and Sensitivity Analysis for an Automotive Damper Model." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354115794.

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16

Hirsch, Sebastian. "Compression-sensitive Magnetic Resonance Elastography." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17205.

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Diese Arbeit stellt das Konzept der kompressionssensitiven Magnetresonanzelastographie vor. Kompressionssensitive MRE analysiert die Ausbreitung von Kompressionswellen und liefert dadurch Erkenntnisse über die Kompressionseigenschaften eines Mediums auf Grundlage eines poroelastischen Modells. Anomalien bei der Regulation des Gewebedrucks stehen in Zusammenhang mit verschiedenen Krankheitsbildern, wie Normaldruck-Hydrozephalus und Pfortader-Hypertonie. Statischer Druck spielt als Porendruck eine zentrale Rolle in den poroelastischen Wellengleichungen; die kompressionssensitive MRE könnte dahe

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17

Kriuchevskyi, Ivan. "Mechanical and viscoelastic properties of glass-forming polymers in the bulk and thin films : molecular dynamics study of model systems." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAE044/document.

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En nous concentrant sur les valeurs du module de cisaillement l’équilibre Geq pour le modèle bien connu des polymères vitrifiables (echantillionné par le biais de la MD), nous avons adressé la question générale de en quoi les propriétées méchaniques des couches mince diffères de la phase volumique. Il a été démontrè que dans les deux cas Geq de manière non ambigus sèpare l’état fluide (Geq = 0) de l’état vitreux (Geq > 0). Nous avons aussi insisté sur le fait que Geq pour la couche mince dépend de lépaisseur du film h mais aussi de de la pression tangentielle qui est un résultante de la pro

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18

Milani, Sula. "Compressibility and thermal expansion of garnets with compositions typical of inclusions in diamonds." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424306.

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Most of the diamonds formed in the sub-cratonic lithospheric mantle, in the so called ‘diamond window’, but only 1% of these diamonds have mineral phases trapped as inclusions. Although inclusion-bearing diamonds are so rare, they are geologically important, because they are the only direct and unaltered samples that we have from the Earth’s mantle. For this reason, the determination of their pressure of formation (i.e. depth of provenance) is fundamental to better constrain the chemico-physical environment in which they formed. The pressure of formation can be typically estimated by classica

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19

Lindroth, Emma. "Acoustic Characterization of the Cellulose-coated Perfluorocarbon Droplets based on Phase Velocity Measurements." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276837.

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Today, microbubbles are one of the most commonly used ultrasound contrast agents, since their high compressibility results in a strongly scattered signal. Despite this advantage, microbubbles experience limitations by the decreased stability and large diameter. The cellulose nanofiber (CNF) stabilized perfluoropentane (PFC5) droplets have the possibility of eliminating these drawbacks. In order to examine the droplet behavior and scattering ability when exposed to ultrasound, the acoustic response of the droplets is studied and compared with that of microbubbles (MBs). Therefore, this thesis a

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20

Pasquini, Enrico, Hubertus Murrenhoff, and Katharina Schmitz. "On the thermodynamic consistency of experimentally determined fluid properties." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71160.

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In the field of fluid power, accurate knowledge of fluid properties is vital for reasonable prediction of component behaviour and system performance. In general, these properties depend on the pressure and temperature levels that the respective medium is exposed to. The properties and their respective dependencies are not publicly accessible for many fluids commonly used in fluid power. If measured values – typically published in the form of mathematical fluid property models – are available at all, their quality is typically unknown. The paper aims to provide tools to objectively ascertain th

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21

Valilou, Shirin. "Nonlinear Model and Control of Electro Hydraulic Servo-Systems." Doctoral thesis, Università degli studi di Bergamo, 2018. http://hdl.handle.net/10446/104971.

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In many applications, the use of hydraulic drives is still preferable to other driving powers. For instance, in shaking table systems for simulating earthquake signal, hydraulic actuators are still widely applied, because the technology of electrical actuators does not(yet) provide the superior performance of hydraulic actuators in generating high power to weight ratio. However, with increasing demands on the performance of complex motion systems, the limits of performance of hydraulic servo-systems, due to the nonlinear and dynamic characteristics of these systems, come into the picture. Mo

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22

Liu, Wei. "Investigations of the atomic order and molar volume in the binary sigma phase by DFT and CALPHAD approaches." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0471/document.

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La phase sigma peut servir de prototype de phases topologiquement compactes, car la phase sigma possède une large gamme d'homogénéité et il existe de nombreuses données expérimentales disponibles pour la phase sigma. Dans le présent travail, les propriétés physiques, comprenant l'ordre atomique, le volume molaire, l'enthalpie de formation et le module d’élasticité isostatique, de la phase sigma binaire ont été étudiées en utilisant les calculs de premiers principes et la méthode CALPHAD combinée aux données expérimentales de la littérature.Tout d'abord, nous avons constaté que l'ordre atomique

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23

Lee, Wayne Yeung. "Numerical Modeling of Blast-Induced Liquefaction." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/524.

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A research study has been conducted to simulate liquefaction in saturated sandy soil induced by nearby controlled blasts. The purpose of the study is to help quantify soil characteristics under multiple and consecutive high-magnitude shock environments similar to those produced by large earthquakes. The simulation procedure involved the modeling of a three-dimensional half-space soil region with pre-defined, embedded, and strategically located explosive charges to be detonated at specific time intervals. LS-DYNA, a commercially available finite element hydrocode, was the solver used to simulat

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Wei, Jia. "Investigation of High-Input-Voltage Non-Isolated Voltage Regulator Modules Topology Candidates." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/32482.

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Since the early 80s, the computer industry has undergone great expansion. Processors are becoming faster and more powerful. Power management issues in computing systems are becoming more complex and challenging. An evolution began when the high-performance Pentium processor was driven by a non-standard, less-than-5V power supply, instead of drawing its power from the 5V plane on the system board. A so-called Voltage Regulator Module (VRM), is put close to the processor in order to provide the power as quickly as possible. Nowadays, for desktop and workstation applications, VRM input voltage ha

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25

McCarthy, Andrew C. "Behavior of Sodium Clinopyroxenes Under Compression." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194006.

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Three end-member clinopyroxenes from the NaM13+Si2O6 series (M1 = Al, Fe and Ga) have been examined by single-crystal X-ray diffraction at pressures up to 11 GPa. NaGaSi2O6 was also examined with Raman spectroscopy to 16.5 GPa. NaAlSi2O6 (jadeite) and NaFeSi2O6 (aegirine) are naturally occurring minerals. NaGaSi2O6 is synthetic. Various characteristics of each of the three clinopyroxenes as a function of pressure are reported, including bulk moduli (K0), unit cell volumes, atomic positions, and bond lengths.The compressibilities of a selection of clino- and orthopyroxenes from the literatu

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26

Morrison, Luke. "Feedback controller design for power pole electronics laboratory buck converter module." Thesis, Morrison, Luke (2012) Feedback controller design for power pole electronics laboratory buck converter module. Other thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/14811/.

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This thesis paper details the design of a feedback control compensator device to suit a Buck converter. The apparatus that was used is a configurable experimental laboratory device made by the University of Minnesota. The author had aims to provide a fast and stable response to both input voltage disturbances and change in load resistance type disturbances. The voltage output was required to remain constant or return to steady state as fast as possible, without oscillation, after one of these types of disturbances. The design was found to work quite well but there is definitely scope for futur

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27

XU, PENG. "HYBRID X-BAND POWER AMPLIFIER DEVELOPMENT FOR 3D-IC PHASED ARRAY MODULE." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1049977754.

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28

Stone, Thomas Shannon. "A numerical/experimental method for evaluating the bulk and shear complex dynamic moduli of viscoelastic polymers in the kilohertz range." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/17038.

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29

Tell, Erik. "Inte en glödlampa LED-armatur 35000 timmar till, Not a lightbulb LED luminaire 35000 hours more." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20088.

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Uppsatsen behandlar belysningsarmaturer inom LED-segmentet. Uppsatsen behandlar isynnerhet varför ljuskällan i LED-belysningsarmaturer oftast konstrueras så att ljuskällorna inteär utbytbara.Metoder som har använts i förstudien har varit; informationssökning, kvalitativa intervjuer,teknisk LED-modulsinventering samt konstruktionsundersökningar. Metoder som använts iproduktutvecklingsfasen har varit; tekniska informationsstudier, Idéinventering genom visuellidégenerering, imageboards och skissprocess (att tänka med en penna).Syftet med projektet har varit att utveckla en LED-armatur med utbytba

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30

Siryabe, Emmanuel. "Evaluation non destructive par ultrasons de l'adhésion aux interfaces de joints collés." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0427/document.

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Cette thèse a pour objectif de développer des méthodes ultrasonores pour l’END de l’adhésion de joints collés. Pour aborder ce problème, les assemblages sont réalisés avec des substrats en aluminium (isotrope, élastique) et un adhésif de type époxy(isotrope, viscoélastique). Selon la géométrie des assemblages, deux méthodes sont proposées pour obtenir une information quantitative sur le niveau d’adhésion. La première est adaptée à des échantillons de type tri-couches avec recouvrement total.Elle consiste à analyser la transmission d’ondes ultrasonores planes de volume à travers l’assemblage im

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31

Gallardo, Angelo Miguel Asuncion. "Design and Construction of 1800W Modular Multiple Input Single Output Non-Isolated DC-DC Converters." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1739.

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This thesis report details the design and construction of non-isolated DC-DC converters to create a Multiple Input Single Output (MISO) converter for combining multiple renewable energy sources into one single output. This MISO uses the four-switch buck-boost topology to output a single 48V from multiple nominal 24V inputs. The MISO converter implements a modular approach to deliver 1800W output power. Each module in the MISO is rated at 600W and they share the output power equally. Hardware results show that the converter produces 1800W of output power from three sources with 96.4% efficiency

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Makarynska, Dina. "Theoretical and numerical modelling of the effect of viscous and viscoelastic fluids on elastic properties of saturated rocks." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/289.

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Rock physics is an essential link connecting seismic data to the properties of rocks and fluids in the subsurface. One of the most fundamental questions of rock physics is how to model the effects of pore fluids on rock velocity and density. Contemporary scientific computing allows geophysicists to conduct extremely complex virtual (computational) experiments on realistic digital representations of complex porous media, and thus directly relate the measurable properties of the media to their microstructure and saturation. Computational (digital) rock physics can also serve as an effective tool

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33

Vokatý, Vojtěch. "Mechanické vlastnosti lamelového materiálu." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-256876.

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This thesis evaluated experimental research on the influence of selected factors (species, thickness, density, number of stress cycles) on the specified material characteristics (modulus of elasticity, modulus of rupture, limit of proportionality, bendability coefficient). The measured values were statistically evaluated and expressed in tables and graphs. Beech (Fagus Sylvatica L.) was selected to represent hardwood and aspen (Populus Tremula L.) softwood. Tree species affects all observed characteristics. The results show that the modulus of elasticity increases with increasing densification

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Mandrioli, Riccardo. "A modular interleaved converter for output current ripple minimization in dc fast chargers for electric vehicles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18995/.

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In this work, a DC off-board fast battery charger topology is presented, designed, and tested. It is expected to be able to fight the range anxiety by significantly diminish the EVs' charging times up to 15-20 minutes, meanwhile keeping low manufacturing, Operation and Maintenance (O&M) costs. The charger is made out of two main power stages the AC/DC and DC/DC converters. In order to keep the costs lower as possible, both parts are designed using interleaved topologies organized by using the same two-level three-phase modules coupled through reactors. This architecture allows to use the alre

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Hussein, Hussein. "Contribution to digital microrobotics : modeling, design and fabrication of curved beams, U-shaped actuators and multistable microrobots." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2048/document.

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Un nombre de sujets concernant la microrobotique numérique ont été abordés dans le cadre de cette the` se. Une nouvelle génération du microrobot numérique ”DiMiBot” a e´ te´ proposé ce qui rend le DiMiBot plus précis, plus contrôlable et plus petit. La nouvelle structure est formée de deux modules multistables seulement, ce qui ajoute des fonctionnalités´ s importantes comme l’augmentation du nombre de positions avec une taille plus réduite et la capacité´ de réaliser des trajectoires complexes dans l’espace de travail. Le principe du nouveau module multistable combine les avantages des microa

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Malou, Amokrane. "A study on an integrated 4-Switch Buck-Boost DC-DC converter with high efficiency for portable applications." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI027.

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L’augmentation des performances des produits portables requièrent une exploitation la plus efficace possible de la batterie afin de permettre à ces produits d’être utilisés le plus longtemps possible avant d’être rechargés. Les circuits en aval ont besoin d’une source de tension stable qui peut varier pour chacun d’entre eux entre 1.0 V et 5.5 V à partir d’une tension d’entrée pouvant varier entre 2.5V et 5V. Un convertisseur DC-DC à 4 interrupteurs de type dévolteur-survolteur apparait comme une solution intéressante permettant des opérations de diminutions et d’augmentations de tension d’une

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Akinyemi, Segun Ajayi. "Geochemical and mineralogical evaluation of toxic contaminants mobility in weathered coal fly ash: as a case study, Tutuka dump site, South Africa." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1226_1360593017.

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<p>The management and disposal of huge volumes of coal combustion by products such as fly ash has constituted a major challenge to the environment. In most cases due to the inadequate alternative use of coal fly ash, the discarded waste is stored in holding ponds, slag heaps, or stock piled in ash dumps. This practice has raised concerns on the prospect of inorganic metals release to the surface and groundwater in the vicinity of the ash dump. Acceptable scientific studies are lacking to determine the best ash disposal practices. Moreover, knowledge about the mobility patterns of inorganic spe

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Müller, Max [Verfasser], and Veronica [Akademischer Betreuer] Egger. "Dendritic integration in olfactory bulb granule cells: Thresholds for lateral inhibition and role of active conductances upon 3D multi-site photostimulation of spines using a holographic projector module / Max Müller ; Betreuer: Veronica Egger." Regensburg : Universitätsbibliothek Regensburg, 2020. http://d-nb.info/1211556727/34.

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Freitas, Pedro Augusto Ramos de. "Proposta de um compensador sériie de tensão de elevada dinâmica para a correção da tensão instantânea da carga diante de afundamentos ou elevações da tensão da rede elétrica." Universidade Federal de Uberlândia, 2014. https://repositorio.ufu.br/handle/123456789/14580.

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This paper proposes two new topological arrangements consisting in connecting the AC power supply in series with two DC converters, one operating during the positive half-cycle and the other during the negative half cycle. It is noteworthy that these DC converters in series in a case are Buck EIE converters and on the other a buck. The results obtained with both arrangements are analyzed and compared. The control strategy is developed with the goal of imposing an AC voltage output within the limits imposed by the rules in order to mitigate the problems associated with Sags and Swells from the

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Elamalayil, Soman Deepak. "Multilevel Power Converters with Smart Control for Wave Energy Conversion." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-332730.

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The main focus of this thesis is on the power electronic converter system challenges associated with the grid integration of variable-renewable-energy (VRE) sources like wave, marine current, tidal, wind, solar etc. Wave energy conversion with grid integration is used as the key reference, considering its high energy potential to support the future clean energy requirements and due the availability of a test facility at Uppsala University. The emphasis is on the DC-link power conditioning and grid coupling of direct driven wave energy converters (DDWECs). The DDWEC reflects the random nature o

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Osiowy, Kimber B. P. "The bulk modulus, shear modulus, and Poisson's ratio of isotropic ice tested in creep." 1989. http://hdl.handle.net/1993/16977.

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huang, ji-jie, and 黃基杰. "Numerical modelling of the effective plane strain bulk modulus of composite materials." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/54004370888153062688.

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SINGH, UTKARSH. "SOME STUDIES ON SURFACE TENSION, VISCOSITY AND BULK MODULUS OF COMPRESSIBILITY OF BIODIESELS BY DEVELOPING MATLAB MATHEMATICAL MODELS." Thesis, 2019. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16773.

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The future for biodiesels relies heavily on the optimization of the thermo-physical properties such as the surface tension, viscosity and bulk modulus of compressibility of biodiesels. These three properties play a crucial role in the atomization of fuel, pre – combustion of fuel, knocking tendency and ignition timing of the fuel respectively. Estimation of the properties could give a good insight about these properties and also about what can be done further to alter those values to be in the ASTM range defined. Hence a proper understanding of these parameters with their values is essential.

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Bakhorji, Aiman M. "Laboratory measurements of static and dynamic elastic properties in carbonate." Phd thesis, 2010. http://hdl.handle.net/10048/908.

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Thesis (Ph. D.)--University of Alberta, 2010.<br>Title from pdf file main screen (viewed on Mar. 18, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Geophysics, Department of Physics, University of Alberta. Includes bibliographical references.

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"Modeling and experimental evaluation of the effective bulk modulus for a mixture of hydraulic oil and air." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-09-1225.

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The bulk modulus of pure hydraulic oil and its dependency on pressure and temperature has been studied extensively over the past years. A comprehensive review of some of the more common definitions of fluid bulk modulus is conducted and comments on some of the confusion over definitions and different methods of measuring the fluid bulk modulus are presented in this thesis. In practice, it is known that there is always some form of air present in hydraulic systems which substantially decreases the oil bulk modulus. The term effective bulk modulus is used to account for the effect of air and/or

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Motamed, Arash. "Constitutive modeling of viscoelastic behavior of bituminous materials." Thesis, 2012. http://hdl.handle.net/2152/23464.

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Asphalt mixtures are complex composites that comprise aggregate, asphalt binder, and air. Several research studies have shown that the mechanical behavior of the asphalt mixture is strongly influenced by the matrix, i.e. the asphalt binder. Therefore, accurate constitutive models for the asphalt binders are critical to ensure accurate performance predictions at a material and structural level. However, researchers who use computational methods to model the micromechanics of asphalt mixtures typically assume that (i) asphalt binders behave linearly in shear, and (ii) either bulk modulus or Pois

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Luchini, Bruno. "Processing and properties of bulk and cellular carbon-bonded refractory materials." 2019. https://tubaf.qucosa.de/id/qucosa%3A35080.

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In this manuscript, distinct problems concerning carbon-bonded materials processing and characterization were analyzed, from bulk to cellular samples. The main motivation was to address central topics that would enhance the comprehension of the material’s behavior, as well as trigger targeted improvements. Some of the topics this thesis covers are: Non-linear Young’s modulus behavior of carbon-bonded alumina at high temperatures; Influence of the processing route on the cold crushing strength of carbon-bonded alumina foam filters; Geometric characterization of ceramic foam filters as a tool to

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Miranda, Caetano R., and Toshifumi Matsuoka. "FIRST-PRINCIPLES STUDY ON MECHANICAL PROPERTIES OF CH4 HYDRATE." 2008. http://hdl.handle.net/2429/1068.

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The structural and mechanical properties of s-I methane hydrate have been investigated by first principles calculations. For the first time, the fully elastic constant tensor of s-I methane hydrate is obtained entirely ab-initio. The calculated lattice parameter, bulk modulus, and elastic constants were found to be in good agreement with experimental data at ambient pressure. The Young modulus, Poisson ratio and bulk sound velocities are estimated from the calculated elastic constants and compared with wave speed measurements available.

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Locht, Inka Laura Marie. "Cohesive and Spectroscopic properties of the Lanthanides within the Hubbard I Approximation." Licentiate thesis, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-267285.

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We describe the rare-earth elements using the Hubbard I approximation. We show that the theory reproduces the cohesive properties, like the volume and bulk modulus, and we find an excellent agreement between theory and experiment for the (inverse) photo emission spectra of the valence band. In addition we reproduce the spin and orbital moments of these elements. This licentiate thesis contains an introduction to the cohesive, magnetic and spectral properties of the rare-earth elements, to density functional theory and to density functional theory in combination with dynamical mean-field theory

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Jian, Jhen-Yu, and 簡振宇. "Charging Scenario for Serial Buck-Boost Type Battery Power Modules." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/57629112434006299081.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>101<br>Battery power modules (BPMs) with bidirectional buck-boost converters, which are connected in series, are operated interactively but substantially can be controlled individually for either charging or discharging. During the charging process, the battery currents can be scheduled by adjusting the duty-ratios of the associated buck-boost converters. To fully utilize the charger’s capacity, several charging scenarios are proposed according to the state of charges (SOCs) of the batteries under the limitations of the charger’s power and current. To demonstrate t

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