Дисертації з теми "Liner surface"
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Anderberg, Cecilia. "Characterisation and function of cylinder liner surfaces." Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1340.
Повний текст джерелаThe demands on decreased environmental impact from vehicles force the automotive industry to develop engines with reduced engine oil and fuel consumption. Engine oil consumption is recognized to be a significant source of pollutant emissions. Unburned or partially burned oil in the exhaust gases contribute directly to hydrocarbon and particulate emissions. Engine oil and fuel consumption are to a great extend controlled by the topography of the cylinder liner surface.
Recent engine tests have shown a promising reduction in oil consumption when using cylinder liners with a smoother finish than the current plateau honing.
One approach to produce smoother liner surfaces is to replace SiC ceramic honing stones with diamond tools. However, event though the diamond honing process results in higher productivity, improved demands of quality control is needed to monitor the degree of cold worked material - “blechmantel” (German), and the resulting risk of increased wear and scuffing.
A number of petrol and diesel engine cylinder liners have been mapped to be able to verify the quality and consequences, in terms of wear and function, of the honing process. A new mapping method, combining SEM images and quantitative image analysis with traditional 2D profilometry has been developed and tested in this study. The liners where tested in a reciprocating rig of 8 mm stroke and with a frequency of 10 Hz, simulating the top-dead center conditions in a running engine.
The tests where carried out in high- and low pressure conditions with smooth respectively rough liner roughnesses against PVD coated piston rings. The developed surface mapping method was employed before and after the test to study effect of running-in wear on the surface, features characterized with the SEM- and the 2D profilometer.
The results show that combining SEM- and profilometric methods gives a good picture of the effects of varying the cylinder liner pressure and roughness. The roughness of the core decreases more for diesel liners than for petrol liners. In average (rough and smooth liners) the diesel core roughness decreases 265% while the petrol liners average on a 60% decrease. Blechmantel- and Irregularities ratio show a high sensitivity to varying conditions and decrease 1180% to 100% for the diesel liners while the parameters increase between 106% to 18% for all the petrol liners. A probable cause is the more severe diesel high pressure run-in conditions are able to effectively “truncate” the plateaux and remove residing plastically deformed un-cut honing residues while the less severe petrol liner conditions not manage to remove the blechmantel and irregularities in an important extent.
Rosenblatt, Nicolas. "Characterization of cylinder liner by image analysis." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-929.
Повний текст джерелаThe cylinder liners surface is of major importance in an engine since it interacts with the piston rings and creates a tribologic system. This tribologic system has to be qualified and controlled in order to understand and control wear, oil consumption and shelf life. In this purpose, a program has been created in order to analyze SEM pictures and from them qualify the surface.
The aim of the project presented here has been to improve the preliminary steps leading to the image computation by standardizing the picture acquisition and improve the image filtering.
Buhaug, Øyvind. "Deposit Formation on Cylinder Liner Surface in medium-speed Engines." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-209.
Повний текст джерелаThe presence of deposits in the honing grooves in diesel engine cylinder liners can cause a severe increase in the consumption of lubricating oil. These deposits may appear amber in which case they may be referred to as 'liner lacquerer' or be nearly invisible in which case they are often referred to as 'transparent glaze' or 'bore glaze' in the marine sector. The formation of these deposits is believed to be influenced by engine design, engine load, fuel composition and lubricating oil composition. This relationship has, however, not been well understood and little material has been published on this subject. This thesis describes an investigation of this phenomenon. The problem has been approached by studying the composition of deposit samples, studying cases of deposit formation in the field and through experimental work.
As a result of this work, it is hypothesized that the root cause of the deposit formation is a mismatch between the rate of formation of oil insoluble material on or within the oil film and the oil film dispersing power and exchange rate. A large number of parameters will affect this balance which explains the sliding shift in appearance and composition of 'liner lacquer' and 'bore glaze' and the difficulty in identifying the cause of this problem.
A combined mass balance and chemical kinetics approach is used to bridge the gap between fundamental deposit theory and tangible engine related parameters. It is thus possible to rationalize the formation of deposits on cylinder liners. This understanding is sufficient to point out which factors should be considered in terms of the prevention of deposit formation and to present a viable hypothesis on the reason for the deposit formation in the engines that have been investigated in the course of this work as summarized in the following paragraph.
The presence of deposit indicates that the dispersing power and transport rate of the oil film is insufficient to deal with the deposit precursors being formed. This is believed related to extensive low load operation which is associated with both low liner temperatures and low nominal oil consumption in these engines. Low liner temperatures will encourage the formation of insoluble material due to condensation of sulphuric acid precursors, while low oil consumption is believed to indicate low oil film exchange which reduces the transport of matter and also contributes to oil film oxidation by prolonging the exposure to combustion gases.
Spencer, Andrew. "A simulation tool for optimising combustion engine cylinder liner surface texture." Doctoral thesis, Luleå tekniska universitet, Maskinelement, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26512.
Повний текст джерелаGodkänd; 2013; 20131110 (spencer); Tillkännagivande disputation 2013-11-22 Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Andrew Spencer Ämne: Maskinelement/Machine Elements Avhandling: A Simulation Tool for Optimising Combustion Engine Cylinder Liner Surface Texture Opponent: Professor Martin Priest, School of Mechanical Engineering, The University of Leeds, UK Ordförande: Professor Roland Larsson, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Tid: Fredag den 13 december 2013, kl 10. Plats: E632, Luleå tekniska universitet
Wassborg, Pär. "Tribological evaluation of the contact between upper compression ring and cylinder liner with different surface coatings." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-45454.
Повний текст джерелаTreiss, Stephanie. "TIME-DEPENDENT SURFACE TEMPERATURE and HEAT FLUX MEASUREMENTS on a SINGLE CYLINDER ENGINE HEAD and LINER." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1512061036731254.
Повний текст джерелаZhao, Qing Ph D. Massachusetts Institute of Technology. "Modeling of contact between liner finish and piston ring in internal combustion engines based on 3D measured surface." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92105.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 87-88).
When decreasing of fossil fuel supplies and air pollution are two major society problems in the 21st century, rapid growth of internal combustion (IC) engines serves as a main producer of these two problems. In order to increase fuel efficiency, mechanical loss should be controlled in internal combustion engines. Interaction between piston ring pack and cylinder liner finish accounts for nearly 20 percent of the mechanical losses within an internal combustion engine, and is an important factor that affects the lubricant oil consumption. Among the total friction between piston ring pack and cylinder liner, boundary friction occurs when piston is at low speed and there is direct contact between rings and liners. This work focuses on prediction of contact between piston ring and liner finish based on 3D measured surface and different methods are compared. In previous twin-land oil control ring (TLOCR) deterministic model, Greenwood-Tripp correlation function was used to determine contact. The practical challenge for this single equation is that real plateau roughness makes it unreliable. As a result, micro geometry of liner surface needs to be obtained through white light interferometry device or confocal equipment to conduct contact model. Based on real geometry of liner finish and the assumption that ring surface is ideally smooth, contact can be predicted by three different models which were developed by using statistical Greenwood-Williamson model, Hertzian contact and revised deterministic dry contact model by Professor A.A. Lubrecht. The predicted contact between liner finish and piston ring is then combined with hydrodynamic pressure caused by lubricant which was examined using TLOCR deterministic model by Chen. et al to get total friction resulted on the surface of liner finish. Finally, contact model is used to examine friction of different liners in an actual engine running cycle.
by Qing Zhao.
S.M.
Куркчи, Євгеній Петрович, Евгений Петрович Куркчи та Yevhenii Petrovych Kurkchy. "Анализ методов поверхностного упрочнения, применяемых для увеличения износостойкости пар трения". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39651.
Повний текст джерелаMüller, Mario. "Wasserhaushaltsschichten als Bestandteil von Deponieoberflächenabdichtungssystemen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-70532.
Повний текст джерелаBlock, Stephan [Verfasser]. "On surface forces and morphology of linear polyelectrolytes physisorbed onto oppositely charged surfaces / Stephan Block." Greifswald : Universitätsbibliothek Greifswald, 2011. http://d-nb.info/1010396889/34.
Повний текст джерелаRehberger, Marcus. "Topographical micro-changes in corrugated board production : effects on flexographic post-print quality." Licentiate thesis, Stockholm : Department of Media Technology and Graphic Arts, School of Computer Science and Communication, Royal Institute of Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4583.
Повний текст джерелаSilva, Leonardo Rosa Ribeiro da. "Texturização superficial de cilindros automotivos." Universidade Federal de Uberlândia, 2016. https://repositorio.ufu.br/handle/123456789/17988.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
Fundação de Amparo a Pesquisa do Estado de Minas Gerais
A texturização superficial é uma importante ferramenta a ser utilizada na diminuição do atrito em contatos lubrificados, sendo sua eficácia atestada tanto em simulações como experimentalmente. Uma grande barreira para a utilização em escala industrial da texturização superficial e a dificuldade de se encontrar métodos de inserção destes padrões superficiais que combinem rapidez de implementação e baixo custo, tornando assim a técnica mais competitiva. O objetivo deste trabalho é investigar a viabilidade de se inserir texturas superficiais na superfície interna de cilindros automotivos de ferro fundido cinzento, utilizando método de texturização superficial sem mascaramento (MECT), o qual combina baixo custo e elevada velocidade de texturização. Uma vez estabelecidos os parâmetros de texturização do método MECT para o ferro fundido cinzento, foram conduzidos ensaios anel-bloco a fim de comparar os ganhos na redução do atrito e do desgaste de amostras texturizadas quando comparadas a amostras polidas mecanicamente e eletroquimicamente. O MECT se mostrou um método viável, rápido e de baixo custo para texturização de camisas de cilindros automotivos. Nos ensaios anel-bloco as amostras texturizadas superficialmente apresentaram menores coeficiente de atrito e volume desgastado em relação as amostras polidas mecanicamente e eletroquimicamente.
Surface texturing is an important tool to be used for reduction of the friction force in lubricated contacts, being its effectiveness evidenced in simulations and experimentally. A major barrier to use surface texturing in an industrial scale is the difficulty of finding application methods of these surface patterns that combine both high speed and low cost, thus making the surface texturing a more competitive technique. The objective of this work is to investigate the potentiality of inserting surface textures on the inner surface of an automotive cylinder liner made of grey cast iron, using Maskless Electrochemical Texturing Method (MECT), which is a both low cost and high-speed texturing process. Once established the texturing parameters for the method MECT for the grey cast iron, were made Block-on-Ring tests to compare the improvement in reducing friction force and wear of the textured samples in comparison with samples mechanically and electrochemically polished. The method MECT proved to be a viable method for texturing of automotive cylinder liners, being both fast and low cost. In the Block-on-Ring tests, the texturized samples showed lower friction coefficient and wear volume compared to the mechanically and electrochemically polished samples.
Dissertação (Mestrado)
Kane, Charles B. "Plasma modification of linen." Thesis, University of Ulster, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274070.
Повний текст джерелаGyurecz, György, and Tibor Bercsey. "Surface Shape Correction by Highlight Lines." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-228739.
Повний текст джерелаGyurecz, György, and Tibor Bercsey. "Surface Shape Correction by Highlight Lines." TUDpress - Verlag der Wissenschaften GmbH, 2012. https://tud.qucosa.de/id/qucosa%3A30525.
Повний текст джерелаMethakullachat, Deeboon. "Surface reconstruction using 3D linear features /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486459267519196.
Повний текст джерелаMorgenthaler, Michael J. E. "Non-linear optical studies of surfaces." Thesis, Heriot-Watt University, 1993. http://hdl.handle.net/10399/1430.
Повний текст джерелаDowey, Stephen James. "Advanced on-line and off-line process control for surface-engineered applications." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310319.
Повний текст джерелаTang, Dawei. "Investigation of line-scan dispersive interferometry for in-line surface metrology." Thesis, University of Huddersfield, 2016. http://eprints.hud.ac.uk/id/eprint/29153/.
Повний текст джерелаMünch, Wolfram Helmut Patrick. "Turbulent distortion of line and surface elements." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316760.
Повний текст джерелаBRITO, TIAGO NOVELLO DE. "DISCRETE LINE FIELDS ON SURFACES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36019@1.
Повний текст джерелаCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
PROGRAMA DE EXCELENCIA ACADEMICA
PROGRAMA DE DOUTORADO SANDUÍCHE NO EXTERIOR
Um campo de linhas sobre uma superfície é um mapa suave que atribui uma linha tangente a todos, exceto a um número finito de pontos. Esses campos modelam um número de propriedades geométricas e físicas, tais como as direções de curvatura principais nas superfícies ou o fluxo de tensão na elasticidade. Para entender um campo de linha, é usual estudar o comportamento de suas órbitas, que podem apresentar diferentes padrões. Para este fim, consideramos uma abordagem topológica que consiste em utilizar os pontos críticos e separatrices para decompor o campo em regiões de comportamento homogêneo. Focamos em campos que possuem uma estrutura de Morse–Smale. Isso permite operações como o cancelamento de pontos críticos controlados diretamente na decomposição de campo, o que é essencial para a remoção de ruído (simplificação da topologia) em campos provenientes de simulações ou amostragem de problemas do mundo real. Baseado na decomposição de um campo vetorial de Morse–Smale e no cancelamento de pontos críticos, Robin Forman introduziu uma definição discreta para esses campos. O presente trabalho fornece uma definição puramente combinatória para campos de linhas, os campos de linhas discretos, que implicam as construções discretas de Forman para campos de vetores por meio de uma nova representação destes. Campos de linhas discretos admitem uma decomposição que gera uma ponte entre os campos de linhas discretos e suaves, garantindo dessa forma a consistência topológica da definição. Também estabelecemos uma conexão entre um campo de linha discreto e um campo vetorial discreto, desse modo as ferramentas de campos de vetores podem ser usadas em campos de linhas. O trabalho fornece ainda um cancelamento topologicamente consistente de seus elementos críticos para um campo de linha discreto.
A line field on a surface is a smooth map that assigns a tangent line to all but a finite number of points. Such fields model a number of geometric and physical properties, e.g. the principal curvature directions on surfaces or the stress flux in elasticity. They can be seen as a generalization of vector fields. To understand a line field, it is common to study the behavior of its orbits, which can have many different patterns. To this end, we consider a topological approach: we use the critical points and separatrices to decompose the field in regions of similar behavior. We focus on fields that have a Morse–Smale structure. This allows operations like the cancellation of critical points controlled directly in the field decomposition, which is essential for noise removal (topology simplification) on fields coming from simulations or sampling of real-world problems. Based on the decomposition of a Morse–Smale vector field and on cancellation of critical points, Robin Forman introduced a discrete definition for Morse-Smale vector fields. This thesis provides a purely combinatorial definition of line fields, the discrete line fields, entailing Forman s discrete constructions for vector fields through a new representation of these. Discrete line fields admit a (Morse–Smale type of) decomposition that generates a bridge between discrete and smooth line fields, thus guaranteeing the topological consistency of the definition. We also use double branched coverings to suspend discrete line fields to discrete vector fields, so that vector field tools can be used for discrete line fields. Finally we provide, for a discrete line field, a topologically consistent (Morse-like) cancellation of critical elements. This allows a simplification of the discrete line field topology retaining only the most significant features.
Spencer, Andrew. "Optimizing surface texture for combustion engine cylinder liners." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17001.
Повний текст джерелаGodkänd; 2010; 20101115 (spencer); LICENTIATSEMINARIUM Ämnesområde: Maskinelement/Machine Elements Examinator: Professor Roland Larsson, Luleå tekniska universitet Diskutant: Professor Michel Cervantes, Luleå tekniska universitet Tid: Fredag den 17 december 2010 kl 13.00 Plats: E231, Luleå tekniska universitet
Hata, Misako. "Non linear tolerance analysis by response surface methodology." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1173897314.
Повний текст джерелаAl-Jibouri, Khalid Ibrahim G. "Electromagnetic linear surface guided modes and plasmon couplers." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304494.
Повний текст джерелаHunt, M. J. "Linear and nonlinear free surface flows in electrohydrodynamics." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1397249/.
Повний текст джерелаMestre, Manuel. "Détermination d'intervalles de confiance par prédiction et optimisation de la position des sites de mesure en métrologie dimensionnelle des surfaces fabriquées." Cachan, Ecole normale supérieure, 1993. http://www.theses.fr/1993DENS0012.
Повний текст джерелаCox, Anna Lee. "A categorization of piecewise-linear surfaces." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/902464.
Повний текст джерелаDepartment of Mathematical Sciences
Kim, Sangwoo. "Multiconductor transmission line analysis using surface ribbon method /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаJayasankaran, Kathik. "STRUCTURE-BORNE NOISE MODEL OF A SPUR GEAR PAIR WITH SURFACE UNDULATION AND SLIDING FRICTION AS EXCITATIONS." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269451200.
Повний текст джерелаHurley, Barbara Jill. "Contact-line movement on a variably heated surface." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/16728.
Повний текст джерелаMelton, Mark David. "Precise surface placement in transmission line matrix modelling." Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/14898.
Повний текст джерелаWu, Wei. "Linear analysis of surface temperature dynamics and climate sensitivity." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4948.
Повний текст джерелаMatiukas, Vilius. "Reconstruction of 3D object's surface image using linear beam." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120215_161626-44197.
Повний текст джерелаŠioje disertacijoje nagrinėjamas realaus trimačio objekto virtualizavimas – t. y. objekto paviršiaus modelio sukūrimas iš skenuotų vaizdų aibės, po to vizualizuojant šį modelį atvaizdo kompiuterio monitoriaus ekrane pavidalu. Tyrimų objektas – sudėtingos geometrinės formos erdvinio objekto paviršiaus atkūrimo elektroniniu pavidalu iš keleto nestruktūrizuotų taškų rinkinių, gautų nuskaitant objektą skirtingomis apžvalgos kryptimis, metodai ir algoritmai. Sudėtinga objekto forma pasirinkta tam, kad jos nebūtų galima perteikti paprasta matematine išraiška. Erdvinio objekto virtualizavimo procesą galima išskaidyti į šiuos keturis etapus: nestruktūrizuotų taškų rinkinio formavimą, filtravimą, apjungimą ir rekonstravimą. Pirmojo etapo metu, naudojant optinius jutiklius ir kontaktinį skaitymo metodą, objektas nuskaitomas skirtingomis apžvalgos kryptimis, taip gaunant keletą objekto paviršiaus nestruktūrizuotų taškų rinkinių. Antrame etape pašalinami taškai, atsiradę dėl optinių iškraipymų, atspindžių ir šešėlinių sričių įtakos. Trečiame etape atskiri taškų rinkiniai apjungiami į visumą. Paskutinis etapas skirtas erdvinio objekto paviršių aproksimuojančiam tinkleliui gauti. Pagrindinis šio darbo tikslas buvo rekonstruoti erdvinio objekto paviršiaus atvaizdą, objektą apšviečiant linijiniu šviesos pluoštu. Šio tikslo buvo siekiama tobulinant esamus metodus arba kuriant naujus, o taip pat statistiniais metodais vertinant rekonstrukcijos tikslumą. Disertacijos... [toliau žr. visą tekstą]
Lott, Christian D. "Electrothermomechanical Modeling of a Surface-micromachined Linear Displacement Microactuator." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/306.
Повний текст джерелаPerumalsamy, Priya. "In-line Fiber Polarizer." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36897.
Повний текст джерелаPolarizers and polarization devices are important components in fiber optic communication and sensor systems. There is a growing need for efficient low loss components that are compatible with optical fibers. An all fiber in-line polarizer is a more desirable alternative that could be placed at appropriate intervals along communication links.
An in-line fiber polarizer was fabricated and tested. The in-line fiber polarizer operates by coupling optical energy propagating in the fiber to a surface plasmon on a metallic film, which has been deposited onto the surface of the fiber. The device was constructed by polishing a short section of the lateral surface of the cladding to within the evanescent field present around the fiber core. Several thin films including a metal film are applied to the polished section of the fiber. Ionic self-assembled monolayer method was used to coat the polished fiber with thin film.
Master of Science
Allard, Nicolas. "Consequences of Machining on Roughness and Functions of Cylinder liners surfaces." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-911.
Повний текст джерелаThe cylinder liners’ surface is really important in an engine because it corresponds with piston rings to a tribologic system indispensable to know for reasons of wear, of oil consumption and engine’s life time. For these reasons, it is important to measure and characterize these surfaces.
The first part of the project is the observation of the impact of the number of strokes of the plateau honing on the surface of the cylinder liners. It is interesting to observe the impact of the variation of the number of strokes of the plateau honing on the peaks, plateaus and valleys of the surface.
The second part of the project is the simulation of the oil flow on the surface to observe the links between the roughness parameters and the oil flow and the shear stress.
The results are interesting, we will observe that the number of strokes of honing as a good impact on the quality of the surface.
In the second part of the project, the results show a correlation between the machining parameters and the roughness and functional parameters.
It could be interesting to mix the two parts of the project to see the correlation among machining, roughness and functional parameters for the samples made in the first of the project.
Kuo, Betsy P. "Narrowing the molecular weight distribution of linear alcohol ethoxylates." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/11773.
Повний текст джерелаKrywonos, Andrey. "PREDICTING SURFACE SCATTER USING A LINEAR SYSTEMS FORMULATION OF NON-PARAXIAL SCALAR DIFFRACTION." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4218.
Повний текст джерелаPh.D.
Other
Optics and Photonics
Optics
Provencher, Jerome R. "Afloat surface line commanding officer leadership : a comprehensive study." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/25658.
Повний текст джерелаThis thesis explored the leadership styles of Navy commanding officers of afloat commands to determine if there were any differences in leadership styles and the effect, if any, of rank, age, commissioning source, education, ethnicity, location, and ship community type that influenced that leadership style. A review of the literature indicated that the Navy adopted the Situational Leadership Model in 1976. The Navy concurred with the philosophy that there was no one style of leadership that was optimal in all situations, but rather, styles should change to reflect the existing circumstances and the readiness of subordinates. This study was conducted in January 1992 using sample responses from commanding officers and executive officers of Amphibious, Cruiser-Destroyer and Combat Logistic Forces around the world
Seale, Richard Brent, and n/a. "The surface characteristics of spores from thermophilic bacilli isolated from a milk powder production line and their influence on adhesion to surfaces." University of Otago. Department of Food Science, 2009. http://adt.otago.ac.nz./public/adt-NZDU20091001.131237.
Повний текст джерелаRobin, Ludovic. "Pointes AFM à nanotube de carbone pour la métrologie in-line de procédés de fonctionnalisations de surface." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0160/document.
Повний текст джерелаAt present, the researches on the surface functionalization are in full effervescence. In this manuscript, we propose an innovative approach to measure the efficiency of this functionalization. This approach is based on the use of an atomic force microscope, operating in a mode called "frequency modulation". This tool coupled with the grafted tips with a carbon nanotube, which we will call "probe", allows to obtain measurements which would be impossible to make with standard tips. However, in metrology, in order to ensure good reproducibility of the measurements, we need to have probes with characteristics that are as similar as possible. This required the implementation of a method to optimize the manufacture of the probes, as well as a definition of criteria to classify them in different grades of qualities. The uncertainty of repeatability and reproducibility of the measures made with probes of rank "A" were quantified. These measurements have demonstrated that these probes are compatible in terms of robustness and sensitivity for the characterization of functionalized surfaces, whose thickness is superior to the monolayer. Mapping measurements carried out on two types of functionalized surfaces enable to dissociate the topography measurement from the mechanical response of the nanotube in interaction with the surface
DeFeo, Patrick A. "Sequential robust response surface strategy." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53687.
Повний текст джерелаPh. D.
Middleman, Keith James. "The adsorption of linear and cyclic alkenes on metal single crystal surfaces." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343713.
Повний текст джерелаZhang, Li Zhang Li. "Automatic digital surface model (DSM) generation from linear array images /." [S.l.] : [s.n.], 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16078.
Повний текст джерелаCable, Martin. "Surface characterisation of novel linear polyetherurethanes for blood contacting applications." Thesis, Brunel University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336645.
Повний текст джерелаHan, F. S. "Non-linear free surface problems using the boundary element method." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378300.
Повний текст джерелаVeniani, Davide Cesare [Verfasser]. "Lines on K3 quartic surfaces / Davide Cesare Veniani." Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1112954716/34.
Повний текст джерелаMaffucci, Riccardo Walter. "Nodal lines and surfaces of arithmetic random waves." Thesis, King's College London (University of London), 2018. https://kclpure.kcl.ac.uk/portal/en/theses/nodal-lines-and-surfaces-of-arithmetic-random-waves(daf91406-6414-4ca5-ae7f-78e36eb5632e).html.
Повний текст джерелаAlcolado, Adam. "Enumeration of real lines on smooth cubic surfaces." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119517.
Повний текст джерелаPendant le dix-neuvième siècle, Cayley a prouvé qu'une surface cubique lisse contient exactement 27 droites sur le corps complexe. De plus, Schläfli et d'autres ont demontré que le nombre de droites réelles pourait être 27, 15, 7, ou 3. Ces résultats ont été découverts à travers des techniques de la géométrie algébrique de l'époque. Dans cette thèse, nous résolvons ce problème classique en utilisant deux techniques différentes. La première méthode utilise la théorie des groupes, et l'autre utilise des classes charactéristique. Notre but est, en partie, de démontrer comment ces méthodes sont reliées entre eux et, de plus, leurs relation aux résultats classiques. En particulier, nous donnons une description de signes importants, pro-venant de l'approche classique ainsi que l'approche des classes charactéristiques, du point de vu de la théorie des groupes. De plus, en utilisant l'approche des groupes, nous résolvons deux autres problèmes classiques en geométrie énumérative réelle : l'énumération des droites bi-tangentes à une courbe quartique du plan, et l'énumération des plans tritangents à une courbe tordu sextique.
O'Dea, Enda. "Robust control of non-linear 2D and linear 3D disturbances in channel flow by surface transpiration." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/47092/.
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