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Relevant bibliographies by topics / Surface precision / Dissertations / Theses

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Dissertations / Theses on the topic 'Surface precision'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Huang, Run. "High Precision Optical Surface Metrology using Deflectometry." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/581252.

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Software Configurable Optical Test System (SCOTS) developed at University of Arizona is a highly efficient optical metrology technique based on the principle of deflectometry, which can achieve comparable accuracy with interferometry but with low-cost hardware. In a SCOTS test, an LCD display is used to generate structured light pattern to illuminate the test optics and the reflected light is captured by a digital camera. The surface slope of test optics is determined by triangulation of the display pixels, test optics, and the camera. The surface shape is obtained by the integration of the sl

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2

Zhang, Xiangchao. "Free-form surface fitting for precision coordinate metrology." Thesis, University of Huddersfield, 2009. http://eprints.hud.ac.uk/id/eprint/7154/.

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Free-form surfaces are increasingly used in optical and mechanical devices due to their superior optical and aerodynamic properties. The form quality plays an essential role in the characteristics of a free-form component. In order to assess the form error, it is necessary to fit the measurement data with a nominal template or analytical function. This thesis focuses on investigating and developing appropriate fitting (matching) algorithms for different kinds of free-form surfaces. A new algorithm called the Structured Region Signature (SRS) is proposed to provide a rough matching between the

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3

Gregoriou, Gregorios. "Precision determination of surface topography using fibre optic sensors." Thesis, Brunel University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295731.

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4

Fleming, Peter Mark. "High precision EDM for the monitoring of surface movements." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328399.

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5

Kalil, Richard Charles Jr. "Evaluation of Frictional Characteristics of Precision Machined Surfaces." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5000.

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Precision surface finishes are used in a wide variety of applications. From bearing races and rolling elements to parallel slide ways, the frictional characteristics of these surfaces are critical to the performance of the products. Experimental trial and error has shown that certain surfaces outperform others in certain applications, but the specific surface characteristics that make this true have yet to be fully understood. The research goal was to develop an apparatus that can test the coefficient of rolling/sliding friction of different precision machined surfaces and to combine this da

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6

Malcolm, Andrew Alexander. "Fourier analysis of projected fringe patterns for precision measurement." Thesis, Liverpool John Moores University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262105.

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7

Aris, Najmil Faiz Mohamed. "Surfaces functionality of precision machined components : modelling, simulation, optimization and control." Thesis, Brunel University, 2008. http://bura.brunel.ac.uk/handle/2438/5092.

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This research develops an analytical scientific approach for investigating the high precision surface generation and the quantitative analysis of the effects of direct factors in precision machining. The research focuses on 3D surface characterization with particular reference to the turning process and associated surface generation. The most important issue for this research is surface functionality which is becoming important in the current engineering industry. The surface functionality should match with the characterization parameters of the machined surface, which can be expressed in form

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8

Mundsinger, Kai. "From precision photochemistry to advanced microsphere design." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/212369/1/Kai_Mundsinger_Thesis.pdf.

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This thesis explores polymer chemistry in three distinct fields of real-world applications. First, the design of polymers with reversible remote control over their degree of polymerization and three-dimensional shape purely by application of light constitutes a critical first step towards truly recyclable materials. Second, investigations of polymer coated surfaces, one of the largest fields of application for functional materials, to characterize light driven reactions on solid-liquid interfaces gave critical insight for enabling the synthesis of advanced functional interfaces. Third, the dev

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9

Fan, Winston Chi Hang 1975. "The effect of surface roughness on the precision of the encapsulated fixturing system." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/89296.

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10

Herman, Paul Andrew. "Improvement of surface finish quality in peripheral milling VIA precision compensation for cutter runout." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/16696.

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11

Taudt, Ch, T. Baselt, B. Nelsen, et al. "Evaluation of the thermal stability of a low-coherence interferometer for precision surface profilometry." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A34883.

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Manufacturing of precise structures in MEMS, semiconductors, optics and other fields requires high standards in manufacturing and quality control. Appropriate surface topography measurement technologies should therefore deliver nm accuracy in the axial dimension under typical industrial conditions. This work shows the characterization of a dispersion-encoded low-coherence interferometer for the purpose of fast and robust surface topography measurements. The key component of the interferometer is an element with known dispersion. This dispersive element delivers a controlled phase variation in

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12

Ramadoss, Vivek. "Analysis of capillary forces in electrowetting and precision self assembly." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002439.

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13

Kumar, Prashant. "Design and development of an optical chip interferometer for high precision on-line surface measurement." Thesis, University of Huddersfield, 2015. http://eprints.hud.ac.uk/id/eprint/27007/.

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Advances in manufacturing and with the demand of achieving faster throughput at a lower cost in any industrial setting have put forward the need for embedded metrology. Embedded metrology is the provision of metrology on the manufacturing platform, enabling measurement without the removal of the workpiece. Providing closer integration of metrology upon the manufacturing platform will improve material processing and reliability of manufacture for high added value products in ultra-high-precision engineering. Currently, almost all available metrology instrumentation is either too bulky, slow, de

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14

Osnes, Cecilie. "Investigating clinically relevant methods of assessing the quality of three-dimensional surface scan data in dentistry." Doctoral thesis, Università di Siena, 2021. http://hdl.handle.net/11365/1127327.

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Title: Investigating clinically relevant methods of assessing the quality of three-dimensional surface scan data in dentistry Motivation: Having an awareness of the quality of three-dimensional (3D) scan data produced by a dental scanner can affect the clinician’s treatment plan, and potentially whether they choose to invest in a 3D scanner for clinical use. Assessing the quality of 3D scan data can therefore be of great value both to practitioners and scanner manufacturers. Statement of problem: Assessing the quality of 3D data is a challenge; assessing the quality of 3D data for clinica

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15

Örn, Henrik. "Accuracy and precision of bedrock sur-face prediction using geophysics and geostatistics." Thesis, KTH, Mark- och vattenteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171859.

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In underground construction and foundation engineering uncertainties associated with subsurface properties are inevitable to deal with. Site investigations are expensive to perform, but a limited understanding of the subsurface may result in major problems; which often lead to an unexpected increase in the overall cost of the construction project. This study aims to optimize the pre-investigation program to get as much correct information out from a limited input of resources, thus making it as cost effective as possible. To optimize site investigation using soil-rock sounding three different

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16

Bai, Jie. "Robust navigation algorithms for aircraft precision approach, landing and surface movement using global navigation satellite systems." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501434.

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17

Kalayci, Kubra. "Advanced photochemical systems with bathochromic shift for precision soft materials design." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/236250/1/Kubra%2BKalayci%2BThesis.pdf.

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The current thesis introduces novel tools via two photochemically induced ligations; [2+2] photocycloadditions and photouncaging reactions for light-controlled Staudinger-Bertozzi ligations. New chromophores were designed to provide a bathochromic shift for the activation wavelength of both reaction types to address the challenges that prevent these systems to be available for biological applications. In-depth photoreactivity studies using action plots revealed the exact wavelength dependent reactivity of the developed systems along with the effect of solvent and pH on the photoreactivity, whi

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18

Chappell, Edward. "Improving the precision of vehicle fuel economy testing on a chassis dynamometer." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681048.

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In the European Union the legislation governing fleet CO2 emissions is already in place with a fleet average limit of 130g/km currently being imposed on all vehicle manufacturers. With the target for this legislation falling to 95g/km by 2020 and hefty fines for noncompliance automotive engineers are working a pace to develop new technologies that lower the CO2 emissions and hence fuel consumption of new to market vehicles. As average new vehicle CO2 emissions continue to decline the task of measuring these emissions with high precision becomes increasingly challenging. With the introduction o

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19

Arai, S. "Surface integrity control of piezoelectric materials in ultra precision grinding on the basis of machine design assessment." Thesis, Cranfield University, 2004. http://dspace.lib.cranfield.ac.uk/handle/1826/10441.

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The target of this research work was to establish a surface integrity control methodology in ultra precision grinding for piezoelectric materials, taking into account the interaction between the material removal manner and the machine design contributions. Whilst there are many respective research works concerning the microscopic material removal behavior on brittle materials and the design characterization of individual machine components, it was necessary to identify the design characteristics in order to ensure a consistent and fine surface integrity ( i.e. surface roughness, surface atness

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20

Ten, Jyi Sheuan. "High speed mask-less laser-controlled precision micro-additive manufacture." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/285409.

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A rapid, mask-less deposition technique for writing metal tracks has been developed. The technique was based on laser-induced chemical vapour deposition. The novelty in the technique was the usage of pulsed ultrafast lasers instead of continuous wave lasers in pyrolytic dissociation of the chemical precursor. The motivation of the study was that (1) ultrafast laser pulses have smaller heat affected zones thus the deposition resolution would be higher, (2) the ultrashort pulses are absorbed in most materials (including those transparent to the continuous wave light at the same wavelength) thus

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21

Svenman, Edvard. "Inductive measurement of narrow gaps for high precision welding of square butt joints." Licentiate thesis, Högskolan Väst, Forskningsmiljön produktionsteknik(PTW), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-10150.

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A recent method in aero engine production is to fabricate components from smaller pieces, rather than machining them from large castings. This has made laser beam welding popular, offering high precision with low heat input and distortion, but also high productivity. At the same time, the demand for automation of production has increased, to ensure high quality and consistent results. In turn, the need for sensors to monitor and control the laser welding process is increasing. In laser beam welding without filler material, the gap between the parts to be joined must be narrow. Optical sensors

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22

Digne, Julie. "Inverse geometry : from the raw point cloud to the 3d surface : theory and algorithms." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2010. http://tel.archives-ouvertes.fr/tel-00610432.

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Many laser devices acquire directly 3D objects and reconstruct their surface. Nevertheless, the final reconstructed surface is usually smoothed out as a result of the scanner internal de-noising process and the offsets between different scans. This thesis, working on results from high precision scans, adopts the somewhat extreme conservative position, not to loose or alter any raw sample throughout the whole processing pipeline, and to attempt to visualize them. Indeed, it is the only way to discover all surface imperfections (holes, offsets). Furthermore, since high precision data can capture

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23

Zhu, Zhen. "CHARACTERIZATION OF GLOBAL POSITIONING SYSTEM EARTH SURFACE MULTIPATH AND CROSS CORRELATION FOR AIRCRAFT PRECISION APPROACH OPERATIONS USING SOFTWARE RADIO TECHNOLOGY." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1156276678.

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24

Fiocchi, Arthur Alves [UNESP]. "Avanços no desenvolvimento de um processo de acabamento para peças planas submetidas à cinemática de lapidação sobre um rebolo dressado com grau de recobrimento." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/96484.

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Made available in DSpace on 2014-06-11T19:28:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-06-18Bitstream added on 2014-06-13T19:36:47Z : No. of bitstreams: 1 fiocchi_aa_me_bauru.pdf: 5371044 bytes, checksum: 94725749d4cc04cded0dd3dfa808963b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Atualmente, avanços nas áreas de eletrônicos e computadores têm demandado máquinas e processos de fabricação capazes de manufaturar peças com tolerância geométrica, dimensional e acabamento superficial em níveis nanométricos, características, até então, não alcanç

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25

Fiocchi, Arthur Alves. "Avanços no desenvolvimento de um processo de acabamento para peças planas submetidas à cinemática de lapidação sobre um rebolo dressado com grau de recobrimento /." Bauru : [s.n.], 2010. http://hdl.handle.net/11449/96484.

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Orientador: Luiz Eduardo de Angelo Sanchez<br>Banca: Carlos Alberto Fortulan<br>Banca: Reginaldo Teixeira Coelho<br>Resumo: Atualmente, avanços nas áreas de eletrônicos e computadores têm demandado máquinas e processos de fabricação capazes de manufaturar peças com tolerância geométrica, dimensional e acabamento superficial em níveis nanométricos, características, até então, não alcançados pelos processos tradicionais de retificação e lapidação. Agregando algumas das vantagens desses processos, as três últimas décadas têm vivenciado a criação de novas tecnologias, que convergem para a utilizaç

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26

Марчук, І. В., М. В. Олексин та А. М. Ештеіві. "Технологічне керування точністю поверхонь обертання на операціях механічного оброблення". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/61423.

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Покращення якості виробів машинобудування може здійснюватись за різними напрямками. Одним із напрямків є впровадження систем регулювання з метою підвищення технологічної надійності верстатів, тобто підвищення точності оброблення.

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27

Furlong, Carolyn. "Investigation of the precision and accuracy of surface area and volume estimators of the human brain using stereology and magnetic resonance imaging." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501720.

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The goal of this thesis was to investigate the accuracy and precision of estimators of surface area and volimie in the human brain using stereology and magnetic resonance imaging (MRI) and to study the relationship between brain asymmetry and handedness in a novel in-vivo application to monozygotic (MZ) twin pairs discordant for handedness.

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28

Kagawa, Takao. "Study on surface and buried earthquake source modeling and 3-D velocity structure estimation for high-precision evaluation of strong ground motion." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147888.

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29

Brutti, Marcelino Andre. "UTILIZAÇÃO DO SISTEMA John Deere - Surface Water PRO e CR - CAMPEIRO 7 PARA OBTENÇÃO DE DADOS ALTIMÉTRICOS PARA O MANEJO DO ARROZ IRRIGADO (Oryza Sativa)." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/4808.

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Precision agriculture, have a determinant role in the management of agriculture, has a direct effect in the reduction of production costs as the environmental impacts from the management of localized farming. The conservation of water and soil is of great importance to the management of water resources. Thus, this study aimed to analyze the system John Deere Surface Water Pro, as the best way to make the altimeter work, taking into account the routine of the property, as sowing and harvesting the rice paddy. Was also tested using the tool JD - APEX created in Software CAMPEIRO CR 7 for process

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Thornes, Tobias. "Investigating the potential for improving the accuracy of weather and climate forecasts by varying numerical precision in computer models." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:038874a3-710a-476d-a9f7-e94ef1036648.

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Accurate forecasts of weather and climate will become increasingly important as the world adapts to anthropogenic climatic change. Forecasts' accuracy is limited by the computer power available to forecast centres, which determines the maximum resolution, ensemble size and complexity of atmospheric models. Furthermore, faster supercomputers are increasingly energy-hungry and unaffordable to run. In this thesis, a new means of making computer simulations more efficient is presented that could lead to more accurate forecasts without increasing computational costs. This 'scale-selective reduced p

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31

Bediaf, Houda. "Quantification et modélisation par traitement d'images de la répartition des produits pulvérisés à l'échelle de la feuille en fonction de son état de surface et la nature du produit." Thesis, Dijon, 2016. http://www.theses.fr/2016DIJOS005/document.

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Dans le cadre de la pulvérisation agricole, la diminution de la quantité des intrants est devenue une étape cruciale, et ce notamment en viticulture. La pulvérisation de précision en viticulture implique cependant une maitrise conjointe du matériel utilisé, des produits et de la répartition de ces produits sur le feuillage. Dans ce contexte, nombreuses sont les recherches menées sur l’optimisation d’utilisation des produits phytosanitaires, leur objectif final étant de réduire de manière significative la quantité d’intrants dans la culture. Cependant, peu de travaux ont été effectués sur l’étu

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32

Yergok, Caglar. "Rough Cutting Of Germanium With Polycrystalline Diamond Tools." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612175/index.pdf.

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Germanium is a brittle semi-metal, used for lenses and windows in Thermal Imaging Systems since it transmits infrared energy in the 2 &micro<br>m - 12 &micro<br>m wavelength range at peak. In this thesis study, polycrystalline diamond is used as cutting tool material to machine germanium. Diamond is the hardest, most abrasion-resistant material and polycrystalline diamond is produced by compacting small diamond particles under high pressure and temperature conditions, which results more homogeneous, improved strength and a durable material. However, slightly reduced hardness is obtained when c

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33

Erickson, Christopher Joseph. "Construction of a Calcium Matter-Wave Interferometer." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2162.pdf.

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34

Шоломицький, О. Л. "Застосування штучних нейронних мереж для розв’язання прикладних задач інженерної механіки". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67048.

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Штучні нейронні мережі (ANN – artificial neural networks) набувають широкого застосування у науковій діяльності з огляду на їх здатність бути універсальними апроксимуючими процедурами та можливість забезпечення загальних механізмів створення моделей із нелінійними співвідношеннями між вхідними та вихідними параметрами.

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35

Renisch, Dennis [Verfasser]. "Installation and operation of a high-temperature surface ion source for the online coupling of TRIGA-SPEC to the TRIGA Mainz research reactor and high-precision mass measurements of transuranium nuclides at TRIGA-TRAP / Dennis Renisch." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1105495981/34.

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Hemmaty, Gholam-Hassan. "The formation, assessment and application of precision surfaces." Thesis, De Montfort University, 1988. http://hdl.handle.net/2086/4779.

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37

Evans, Christopher James. "Absolute figure metrology of high precision optical surfaces." Thesis, University of Birmingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.552738.

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Phase measuring interferometers can provide extremely repeatable comparisons between reference and test surfaces. This thesis explores the limits to which the accuracy of measurement of flat, spherical and aspheric optical surfaces can be made to approach that repeatability. Analysis of conventional methods for separating errors in flats (the three flat test) shows that the systematic differences between repeated measurements can be predicted from the shape of the surfaces and a plausible estimate of relocation errors. Errors introduced by distortion are analysed. New methods for separation of

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Luo, Xichun. "High precision surfaces generation : modelling, simulation and machining verification." Thesis, Leeds Beckett University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402029.

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Sun, Wenjuan. "Precision measurement and characterisation of spherical and aspheric surfaces." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/65594/.

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This thesis describes an investigation into the measurement and the characterisation of spherical and aspheric surfaces. The reliability of the nonlinear least-squares sphere fitting algorithm has been investigated. The study is focused on spherical surfaces, superimposed with random surface irregularities, within small surface segment angles. A new method based on Box’s estimation has been developed to calculate the bias of estimated parameters. The method is significantly faster and more convenient than a computer simulation process. By combining this estimate with the calculation of the unc

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Роп'як, Любомир Ярославович. "Науково-технологічні основи виготовлення деталей та складання виробів, зміцнюваних мікродуговим оксидуванням алюмінієвого шару". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38356.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2018. У дисертаційній роботі вирішена актуальна науково-технічна проблема в об-ласті технології машинобудування: розроблено теоретичні основи та технологічні засоби для підвищення ресурсу роботи нафтогазового обладнання шляхом мікродугового оксидування поверхневого алюмінієвого шару деталей машин. Досліджено напружений стан двошарового покриття під довільно орієнтованим локальним навантажен

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Zelasco, José Francisco. "Gestion des données : contrôle de qualité des modèles numériques des bases de données géographiques." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20232.

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Les modèles numériques de terrain, cas particulier de modèles numériques de surfaces, n'ont pas la même erreur quadratique moyenne en planimétrie qu'en altimétrie. Différentes solutions ont été envisagées pour déterminer séparément l'erreur en altimétrie et l'erreur planimétrique, disposant, bien entendu, d'un modèle numérique plus précis comme référence. La démarche envisagée consiste à déterminer les paramètres des ellipsoïdes d'erreur, centrées dans la surface de référence. Dans un premier temps, l'étude a été limitée aux profils de référence avec l'ellipse d'erreur correspondante. Les para

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Роп'як, Любомир Ярославович. "Науково-технологічні основи виготовлення деталей та складання виробів, зміцнюваних мікродуговим оксидуванням алюмінієвого шару". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38291.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2018. У дисертаційній роботі вирішена актуальна науково-технічна проблема в області технології машинобудування: розроблено теоретичні основи та технологічні засоби для підвищення ресурсу роботи нафтогазового обладнання шляхом мікро-дугового оксидування поверхневого алюмінієвого шару деталей машин. Досліджено напружений стан двошарового покриття під довільно орієнтованим локальним навантаженн

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Рибалка, Павло Валерійович, Павел Валерьевич Рыбалка, and Pavlo Valeriiovych Rybalka. "Increasing efficiency of machining high-precision holes with noncontinuous surfaces." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46876.

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This paper is about a center hole with noncontinuous surface of a centrifugal pump impeller. The main subject is deviation of cylindrical shape of an impeller center hole and its concentricity to sealing surfaces. The purpose is finding a logarithm of getting precise cylindrical shape of the hole.

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PICART, PASCAL. "Contribution au controle de surfaces planes et spheriques de precision nanometrique." Paris 11, 1995. http://www.theses.fr/1995PA112444.

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Le sujet de ce memoire est l'etude d'un interferometre de fizeau a decalage de phase pour la mesure de surfaces planes et spheriques a des precisions nanometriques. Nous avons recense et etudie les sources de limitation et recherche les conditions ou les solutions rendant leur contribution inferieure a un millieme de longueur d'onde en valeur crete a crete (la longueur d'onde est egale a 632,8 nanometres). Six sources potentielles d'erreurs ont ete examinees: la source laser, la detection, l'element qui cree le dephasage, le diffuseur mobile du systeme d'imagerie, les aberrations geometriques

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Shore, Paul. "Machining of optical surfaces in brittle materials using an ultra-precision machine tool." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/3610.

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Investigations of machining optical surfaces into brittle materials using an ultra precision machine tool are presented. The newly developed ultra precision NION machine is evaluated to gain a good appreciation of its operating performance. The machining accuracy capability of this machine is established by careful measurement of its motion accuracy, thermal and dimensional stability and loop stiffness. Corroboration of these measurements are provided by assessment of surfaces which were produced in soft 'easily machined' metal materials. It was found that surfaces smooth to -1 nm Ra could be

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Анциферова, Олеся Олександрівна. "Технологічне забезпечення точності та якості поверхонь зубчастих коліс при удосконаленні методу зубошліфування". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38013.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018. Дисертацію присвячено вирішенню проблеми підвищення продуктивності процесу зубошліфування на основі досягнення високої необхідної точності і якості поверхневого шару з оцінкою комплексного впливу конструктивно-технологічних факторів на процес формування поверхневого шару зубів зубчастих коліс з метою підвищення їх зносостійкості, а також продуктивності технологічного процесу в оптимал

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Анциферова, Олеся Олександрівна. "Технологічне забезпечення точності та якості поверхонь зубчастих коліс при удосконаленні методу зубошліфування". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37888.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018. Дисертацію присвячено вирішенню проблеми підвищення продуктивності процесу зубошліфування на основі досягнення високої необхідної точності і якості поверхневого шару з оцінкою комплексного впливу конструктивно-технологічних факторів на процес формування поверхневого шару зубів зубчастих коліс з метою підвищення їх зносостійкості, а також продуктивності технологічного процесу в оптималь

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Cassiano, Rodrigo Pereira. "Otimização de modelos não lineares na nutrição de precisão para frangos de corte /." Ilha Solteira, 2018. http://hdl.handle.net/11449/180443.

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Orientador: Otto Mack Junqueira<br>Resumo: Um dos maiores desafios encontrados na nutrição de aves de corte atualmente, é determinar com precisão quais os níveis de energia ideais para compor a dieta das distintas fases de crescimento. Sabe-se que do custo total de uma ração a energia representa cerca de 50%, e que devemos considerar seus níveis na dieta para inclusão de todos os nutrientes. Neste trabalho serão apresentadas ferramentas computacionais e métodos aplicados com objetivo de otimizar as respostas para teores energéticos de dietas para frangos de corte. Para isso, foram realizados d

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Chen, Yung-chih, and 陳勇志. "Form Error Analysis on Precision Surface Smoothing Processes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/2k29k2.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>95<br>Abstract This research is to investigate the form error and surface roughness of non-axial symmetrical optical surface in an automated surface smoothing system with a developed Easy CAM software. First, 3D curve is designed according to the aspherical function and utilized the boundary blending to construct a free form surface by Non-Uniform Rational B-Spline (NURBS) representation and the parametric optical surface constructed after comparing with designed optical surface. Then an computer-aided manufacturing program, Easy CAM has been developed to generate th

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Feng, Wei-Chung, and 馮維中. "Numerical Simulation of a Surface Precision Machining Process." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/71682060802027645616.

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碩士<br>國立屏東科技大學<br>車輛工程系所<br>96<br>A numerical analysis of the flow field for Electron Cyclotron Resonance Plasma Enhanced Chemical Vapor Deposition(ECR-PECVD)and Magnet-orheological Abrasive Flow Finishing (MARFF) . ECR-PECVD is for coating and MRAFF is for grinding. ECR-PECVD introduces power into the reactor through different means such as the radio frequency microwave and so on, In this process, the application of forced convection and diffusion lead the precursor gases and precursor to the substrate surface .The major advantages for ECR-PECVD is the material and coating material for free f

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