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Tesi sul tema "Gearing"

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1

Söderberg, Jansson Marcus, and Oskar Lundkvist. "Property Optimization of PM-gearing." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209549.

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Abstract (sommario):
The purpose of this bachelor thesis is to design and optimize a powder metal gear through FEM-analyzes. The moment of inertia and weight of the gear shall be reduced at the same time as the demands on tension and bending stiffness are met. The gear that is used as reference and will be optimized is the standard gear in the FZG-rig at the department of Machine Design at KTH. The work is initiated with a literary study. After that a CAD-model of the gear and its pinion is created in Solid Edge. Then the reference gear is analyzed in the FEM-program Ansys and control calculations are made accordi
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2

Ding, Huali. "Dynamic wear models for gear systems." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1194025602.

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3

Daros, Pinto Matheus. "Muscle gearing during eccentric contractions in vivo." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2024. https://ro.ecu.edu.au/theses/2876.

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Abstract (sommario):
Daily and sports activities often involve eccentric contractions when the load acting on a muscle is greater than its force production, in which case the muscles actively lengthen to absorb or dissipate mechanical energy. In pennate muscles, fascicles change both length and angle as the muscle lengthens. The fascicle rotation reduces the amount of fascicle lengthening for a given muscle length change and allows (i) fibres and fascicles to work more optimally within their length−tension and force−velocity relations, and (ii) the muscle to operate over a broader range of lengths than when rotati
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4

Petry-Johnson, Travis T. "Experimental investigation of spur gear efficiency." Connect to resource, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209585550.

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5

Hu, Jun. "The kinematic analysis and metrology of cylindrical worm gearing." Thesis, University of Newcastle Upon Tyne, 1997. http://hdl.handle.net/10443/807.

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Abstract (sommario):
Worm gearing is very widely used, especially in heavy industry, but due to the complexity of worm gear geometry, worm gear research has lagged behind that for spur and helical gears. In the last decade, however, the potential for significant improvement in worm gearing has dramatically increased: computers have given greater freedom to analyse worm gearing; CNC machines make it possible to aim for optimised worm gear geometries with very high accuracy and the development of synthetic lubricants has substantially improved lubrication conditions. In the UK, over the last few years, research effo
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6

Bajer, Andrzej. "Parallel finite element simulator of planetary gear trains." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3032969.

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7

Kendrick, Allen E. "Defect characterization in cast steel ball mill ring gears." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66196.

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8

Elyurek, Mehmet. "Establishing a vibration threshold value, which ensures a negligible false alarm rate for each gear in CH-53 aircraft using the operational data." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FElyurek.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): Samuel E. Buttrey, Robert Koyak. Includes bibliographical references (p. 77-78). Also available online.
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9

Yildirim, Nihat. "Theoretical and experimental research in high contact ratio spur gearing." Thesis, University of Huddersfield, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307840.

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10

Dearn, Karl David. "An investigation into tribological and performance related aspects polymeric gearing." Thesis, University of Birmingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532276.

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Abstract (sommario):
The benefits of using polymer and polymer composite gears are numerous and it is these in part that is fuelling the resurgent commercial interest in them for metal replacement applications, thought to be in the region of £160M per annum. This interest is further driven by the increasingly important need for considerate energy consumption and the drive for greater product efficiency. As the science and technology associated with polymeric gearing develops, so too do the complexities and demands of the application. Although traditionally employed in low load and speed applications and motion con
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11

Killeen, Michael. "Experimental and mathematical investigation into aspects of spatial involute gearing." Thesis, View thesis, 2005. http://handle.uws.edu.au:8081/1959.7/20408.

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Abstract (sommario):
This thesis is a small part of a much larger work, the aim of which is to continue the transition from gear theory to gear practice. The thesis deals with some aspects of the testing and theoretical development of equiangular and plain polyangular gears respectively. Initial prototypes of the equiangular spatial involute gearing, a small subset of a general spatial involute gear set, developed in previous works are to be tested for both function and form. The tests, based on the principles of the single flank gear tester, investigate constancy of transmission ratio and use both electronic and
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12

Killeen, Michael. "Experimental and mathematical investigation into aspects of spatial involute gearing." View thesis, 2005. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20051102.111626/index.html.

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13

Gustavsson, Mårdestam Peter, and Adam Lundin. "Efficiency Analysis of a Planetary Gearbox." Thesis, Linköpings universitet, Maskinkonstruktion, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-65578.

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Abstract (sommario):
This Bachelor of Science thesis consists of an efficiency evaluation and creation of atheoretical model for an Atlas Copcos epicyclic gearbox. The thesis starts with atheoretical chapter containing the fundamentals of epicyclic gearing and the build of thespecific gearbox investigated. The following chapter contains former testing and theoryof power losses in a gearbox. After the theory is explained the next chapter containstesting, compromises and assumptions during testing and also results from the testing.The next chapter explains the Matlab calculation program based on the theory andmeasur
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14

Lin, Juhn-Shyue. "Experimental analysis of dynamic force transmissibility through bearings." Connect to resource, 1989. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1207597697.

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15

Jian, Linni, and 蹇林旎. "Design, analysis and application of coaxial magnetic gears." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44897558.

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16

Hochmann, David. "Friction force excitations in spur and helical involute parallel axis gearing /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487948158628115.

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17

Houghton, Brian K. "Gearing up and getting there : improving local response to chemical terrorism /." Santa Monica, CA : Pardee RAND Graduate School, 2004. http://bibpurl.oclc.org/web/14262.

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18

Hurrell, Michael J. "Shroud Effects on Load-independent Power Loss of High-speed Rotorcraft Gearing." Cleveland State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=csu1588885945866605.

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19

Chase, David Roger. "Development of an efficiency test methodology for high-speed gearboxes." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209661381.

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20

Cook, Nathan Lindquist. "Investigation of vibration control of hypotrochoidally driven machninery." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17391.

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21

Palmer, David. "The effects of profile relief on narrow face width parallel axis gears." Thesis, University of Huddersfield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342563.

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Abstract (sommario):
The well established practice of applying tip and/or root relief to the teeth of low contact ratio spur gears is reviewed. Results are presented for the experimental validation of a systematic design method for profile relief that depends critically on how far the relief extends along the path of contact. This method has proved to be effective in controlling gear vibration and noise. A good correlation between static transmission error, dynamic transmission error and sound pressure level was found. This allows design rules to be formulated which can be applied to achieve the minimum vibration
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22

Yang, Feng. "Numerical analysis and three dimensional modelling of worm gearing with localised tooth contact." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302638.

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23

Song, Guangming. "An application of computer aided design and computer aided draughting techniques to gearing." Thesis, City, University of London, 1988. http://openaccess.city.ac.uk/19505/.

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Abstract (sommario):
The thesis describes the development of a computer-aided design and computer-aided draughting package of industrial gearboxes for transmitting power between shafts having parallel major axes. The package mainly consists of the following functions: (a) Determination of gear tooth numbers from the properties of continued and conjugate fractions (b) Generation of gear teeth by a rack-type cutter (c) Calculation of gear tooth profile and production of gear tooth grid for finite element stress analysis (d) Detailed strength analysis and design of a spur or helical, external or internal, standard or
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24

Wang, Jiande. "Numerical and Experimental Analysis of Spur Gears in Mesh." Thesis, Curtin University, 2003. http://hdl.handle.net/20.500.11937/879.

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Abstract (sommario):
The investigation of numerical methods for modelling the mechanism properties of involute spur gears in mesh, over the mesh cycle, forms the major part of this thesis. Gearing is perhaps one of the most critical components in power transmission systems and the transmission error of gears in mesh is considered to be one of the main causes of gear noise and vibration. Numerous papers have been published on gear transmission error measurement and many investigations have been devoted to gear vibration analysis. There still, however, remains to be developed a general Finite Element Model capable o
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25

Milkovic, Petar. "Analysis and Design of a Flexible Tooth Gear." [Milwaukee, Wis.] : e-Publications@Marquette, 2009. http://epublications.marquette.edu/dissertations_mu/20.

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Abstract (sommario):
Thesis (Ph. D.)--Marquette University, 2009.<br>Access available to Marquette University only. Available for download on June 17, 2010. Robert J. Stango, Nicholas J. Nigro, Stephen Heinrich, Vikram Cariapa, Shuguang Huang, Advisors.
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26

Курочкін, Валерій Борисович, Валерий Борисович Курочкин, Valerii Borysovych Kurochkin, К. В. Гудимова та А. Н. Демченко. "Определение модулей зубчатых передач двухступенчатого цилиндрического соосного редуктора". Thesis, Издательство СумГУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/25844.

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27

Vijayakar, Sandeep M. "Finite element methods for quasi-prismatic bodies with application to gears /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487335992904337.

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28

Haji, Bungsu Hajah Jabaidah. "Investigating threshold concepts in the learning of agriculture : gearing towards quality and relevant curriculum innovation." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2761.

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Abstract (sommario):
Agricultural education in Brunei Darussalam is torn between apparently conflicting patterns. There seems to be an economic agenda where policy makers attempt to make educational outcomes match national priorities. Worldwide, agriculture is being confronted by a globalised economy and market reforms. However, agriculture as a subject in schools is also confronting the issues of quality education. Quality education is the number one goal of Brunei’s national education system; but how do we address quality in learning, in a prescribed curriculum? In pursuit of that quality, this study explores wh
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29

DeCaires, Brian J. "Variation analysis of involute spline tooth contact /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1176.pdf.

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30

Irwin, Gary M. "Interactive 3-D computer-aided design of external spur gears cut by a hob." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/90943.

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Abstract (sommario):
An interactive program is presented which enhances the design of external spur gears cut by a hob. The program code calculates the geometry of an involute spur gear with trochoidal fillets and then uses the Graphical Kernel System (GKS), CADAM, and MOVIE.BYU to represent and display the gear. GKS, an international standard, is used to represent the gear in two dimensions; while the CAD/CAM system CADAM and the software package MOVIE.BYU accurately create wireframe geometric design models in three dimensions. Examples of the input parameters needed and each of the software packages in use are s
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31

Bahrami, Kouhshahi Mojtaba. "Design and Performance Evaluation of Linear and Axial-Flux Magnetic Gears." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/4983.

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Abstract (sommario):
The conversion from low speed to high speed and vice versa in various forms, including rotary and linear motion, is a requirement for a wide range of applications. For example, wind power generation requires a conversion of low speed rotation of turbine blades to high speed generator rotation, and ocean wave power generation is achievable by conversion of low speed linear motion to either high speed rotation or high speed linear motion. Mechanical gearboxes, hydraulic and pneumatic actuators are commonly used to achieve these conversions. However, these systems suffer from reliability issues,
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32

Hamadi, Hassan. "The measurement of financial performance and its effect on the relationship between gearing and over-investment." Thesis, University of Surrey, 2005. http://epubs.surrey.ac.uk/857/.

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33

Jain, Sharad. "Skidding and fault detection in the bearings of wind-turbine gearboxes." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608104.

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34

Sherwood, Norman Keith. "Open gear lubrication." Thesis, Queensland University of Technology, 1999.

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35

Benn, Colin. "The application of an elastohydrodynamic lubrication (EHL) model to open gates." Thesis, Queensland University of Technology, 1994.

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36

Liu, Gang. "Nonlinear dynamics of multi-mesh gear systems." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196222009.

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37

Schön, Peter Paul. "Unconditionally convergent time domain adaptive and time-frequency techniques for epicyclic gearbox vibration." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-08282007-142010.

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38

Al-fozan, Adel. "3-D simulation and optimization of forging of a complex bevel gear using the finite element method." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1177006776.

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39

Wang, Jiande. "Numerical and Experimental Analysis of Spur Gears in Mesh." Curtin University of Technology, Department of Mechanical Engineering, 2003. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14464.

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Abstract (sommario):
The investigation of numerical methods for modelling the mechanism properties ofinvolute spur gears in mesh, over the mesh cycle, forms the major part of this thesis.Gearing is perhaps one of the most critical components in power transmission systemsand the transmission error of gears in mesh is considered to be one of the main causes ofgear noise and vibration. Numerous papers have been published on gear transmissionerror measurement and many investigations have been devoted to gear vibration analysis.There still, however, remains to be developed a general Finite Element Model capable ofpredi
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40

Switzer, Earl, Michael Whelan, and Farncisco Lagunas. "AIR TRAFFIC CONTROL COMMUNICATIONS TEST FACILITY AND AVIONICS SYSTEM TEST (ACTFAST): GEARING UP FOR NEXT GENERATION AVIONICS SYSTEMS TESTING." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608285.

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Abstract (sommario):
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California<br>Growth in civil aviation is overwhelming worldwide airspace and air traffic services. The International Civil Aviation Organization (ICAO), Federal Aviation Administration (FAA) and Department of Defense (DoD) are proposing or implementing numerous changes to address this growth. The changes are broadly contained in what the civil aviation community calls Communication, Navigation, and Surveillance/Air Traffic Management (CNS/ATM) and the DoD calls Glob
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41

Forrester, B. David, and David Forrester@dsto defence gov au. "Advanced vibration analysis techniques for fault detection and diagnosis in geared transmission systems." Swinburne University of Technology, 1996. http://adt.lib.swin.edu.au./public/adt-VSWT20050715.092623.

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The primary objective of the research reported in this thesis was the improvement of safety in helicopters by identifying and, where necessary, developing vibration analysis techniques for the detection and diagnosis of safety critical faults in helicopter transmission systems. A review and, where necessary, expansion of past research is made into (a) the mechanisms involved in the production of vibrations in mechanical systems, (b) the failure modes experienced in geared transmission systems, (c) which failure modes are critical to the safety of helicopters, (d) how the safety critical failur
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42

Feng, Ming-Fa. "A finite element study of bending stress variation in meshed spur gear pairs." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/87645.

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Abstract (sommario):
A study of the bending stresses in a pair of meshed spur gears using the finite element method is presented. The models analyzed were in the shape of a circular gear with five teeth or a five-tooth rack. A unit torque (1 lbf-ft) was applied as the form of nodal forces on the nodes around the bore hole of the driver pinion. The nodes around the bore hole of the driven gear (or the nodes along the back of the driven rack) were fixed. In order to transmit the power from the driver pinion to the driven gear (or rack), the points in contact were made coincident. Seven model groups with same diame
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43

Andersen, Brian S. "An Investigation of a Positive Engagement, Continuously Variable Transmission." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1878.pdf.

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44

Kumar, Naren. "Investigation of drive-train dynamics of mechanical transmissions incorporating cycloidal drives." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/84752/8/Naren%20Kumar%20Thesis.pdf.

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Abstract (sommario):
Cycloidal drives are compact, high-ratio gear transmission systems used in a wide range of mechanical applications from conveyor drives to articulated robots. This research hypothesises that these drives can be successfully applied in dynamic loading situations and thereby focuses on the understanding of differences between static and dynamic loading conditions where load varies with time. New methods of studying the behaviour of these drives under static and dynamic loading circumstances were developed, leading to novel understanding and knowledge. A new model was developed to facilitate rese
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45

Kahimise, Robert N. "Black economic empowerment : looking at ROE, ROA, P/E and gearing of companies listed on JSE from Impumelelo edition (2000.2001) : comparative financial analysis." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53313.

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Abstract (sommario):
Thesis (MBA)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: This empirical study was aimed at analysing the financial performance of black economic empowered companies, as selected per Impumelelo publication - 2000/1 edition. The Unit of Analysis of this study is therefore the phenomenon commonly described as Black Economic Empowerment, and in particular the financial performance of these business entities with specific interest in the following ratios; ROE, ROA, PIE and DIE. The fundamental problems analysed in this study are: Whether these Companies can financially perform consi
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46

Jackson, Robert Lee III. "An investigation of the wear and lubrication of a thrust washer system in an automatic transmission planetary gearset." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16853.

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47

Talbot, David C. "An Experimental and Theoretical Investigation of the Efficiency of Planetary Gear Sets." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1330630066.

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48

Hwang, Jenq-Fong. "Advanced computer-aided design method on the stress analysis of internal spur gears." Connect to this title online, 1986. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1102453550.

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49

Prasannavenkatesan, Rajesh. "Microstructure-sensitive fatigue modeling of heat treated and shot peened martensitic gear steels." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31713.

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Abstract (sommario):
Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: David L. McDowell; Committee Member: G. B. Olson; Committee Member: K. A. Gall; Committee Member: Min Zhou; Committee Member: R. W. Neu. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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50

Ramachandran, Selvaraj. "Hypoid gear optimization." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4419.

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Abstract (sommario):
A hypoid gear optimization procedure using the method of feasible directions has been developed. The objective is to reduce the gear set weight with bending strength, contact strength and facewidth-diametral pitch ratio as constraints. The objective function weight, is calculated from the geometric approximation of the volume of the gear and pinion. The design variables selected are number of gear teeth, diametral pitch, and facewidth. The input parameters for starting the initial design phase are power to be transmitted, speed, gear ratio, type of application, mounting condition, type of load
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