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Relevant bibliographies by topics / Gear case

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Academic literature on the topic 'Gear case'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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Journal articles on the topic "Gear case"

1

Bao, Pei De, Jun Xie, Xiao Qin Yin, Qi Zhi Yang, and Lu Zhong Ma. "Elastohydrodynamic Lubrication Design of Planetary Gear Transmission." Advanced Materials Research 228-229 (April 2011): 681–85. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.681.

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Based on elastic hydrodynamic lubrication (EHL) theory, an EHL model of the meshing between the sun gear and planet gear in planetary gear transmission was established. The EHL oil film thicknesses at meshing areas and those distributions for two operation cases were calculated: one case with the sun gear as the driving gear and another case with the ring gear as the driving gear. The Lubrication with second case was worse. Through the many comparing calculations the lubrication film thickness can be significantly increased by right parameter design. Reasonable raise of lubricant viscosity can

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Miltenović, Aleksandar, Milan Banić, Jovan Tanasković, Jelena Stefanović-Marinović, Damjan Rangelov, and Marko Perić. "WEAR LOAD CAPACITY OF CROSSED HELICAL GEARS." Facta Universitatis, Series: Mechanical Engineering 22, no. 1 (2024): 125. http://dx.doi.org/10.22190/fume220114015m.

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The paper presents a wear load capacity of crossed helical gears (gear pair consists of a worm and a helical gear). Crossed helical gears are similar to worm gear pairs, and it is logical to extend the load capacity calculation approach of worm gears for the case of crossed helical gears. One of the disadvantages of crossed helical gear sets is very high running-in wear. The paper explains the transition between running-in and steady-state wear and proposes a joint wear calculation model. The paper outlines a proposal to extend the calculation method for wear load capacity from a worm gear pai

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Liu, Dezheng, Yan Li, Zhongren Wang, You Wang, and Yu Wang. "Modeling and Analysis of Effective Case Depth on Meshing Strength of Internal Gear Transmissions." Mathematical Problems in Engineering 2018 (December 30, 2018): 1–12. http://dx.doi.org/10.1155/2018/5153292.

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The effective case depth (ECD) plays an important role in the meshing strength of internal gear transmissions. Carburizing quenching heat treatment is commonly used to enhance gear strength and wear resistance. However, the different ECDs in internal and external gears caused by heat treatment significantly affect the meshing strength, causing vibration, reducing gear service life, and hastening malfunction in internal gear transmission. In this study, we conducted an investigation of different ECDs by the heat treatment of carburized gear pairs by numerical simulation with the finite element

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Budzik, Grzegorz, Tadeusz Markowski, Michał Batsch, Jadwiga Pisula, Jacek Pacana, and Bogdan Kozik. "Stress Assessment of Gear Teeth in Epicyclic Gear Train for Radial Sedimentation Tank." Acta Mechanica et Automatica 14, no. 3 (2020): 121–27. http://dx.doi.org/10.2478/ama-2020-0018.

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Abstract The paper presents the strength evaluation of planetary gear teeth designed for a radial sedimentation tank drive. A novel type of gear drive, composed of a closed epicyclic gear train and an open gear train with internal cycloidal gear mesh is proposed. Contact stress and root stress in the planetary gear train were determined by the finite element method and according to ISO 6336. The influence of the mesh load factor at planet gears on stress values was also established. A comparison of the results followed. It was observed that the mesh load factor on satellites depends mainly on

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Kampka, Marco, Christoph Löpenhaus, and Fritz Klocke. "Development of a Methodology for Analyzation of the Influence of Pitch Diameter Shift on the Generating Gear Grinding Process." Advanced Materials Research 1140 (August 2016): 149–56. http://dx.doi.org/10.4028/www.scientific.net/amr.1140.149.

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In order to improve load carrying capacity and noise behaviour, case hardened gears are usually hard finished. One possible process for hard finishing of gears is generating gear grinding, which has replaced other grinding processes in batch production of small and middle sized gears due to high process efficiency. Especially generating gear grinding of large module gears with a module higher than mn > 8 mm can be challenging due to high process forces and the resulting excitation, which can influence gear quality negatively. TÜRICH suggested applying a pitch diameter shift during generatin

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Fan, Qin Man, and Yong Hai Wu. "Nonlinear Vibration Characteristics Analysis of Transmission Gears." Advanced Materials Research 282-283 (July 2011): 633–36. http://dx.doi.org/10.4028/www.scientific.net/amr.282-283.633.

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In allusion to a truck transmission gears, a nonlinear vibration model of transmission gears was constructed based on the theory of gear system dynamics and nonlinear dynamics. Basing on the computing platform Matlab and using the Runge-Kutta method to calculate the time history response of gear vibration when the gap exists, and the case of non-resonant and load gear backlash vibration frequency of gear changes were studied. The results of this paper have an important significance to improve the movement of transmission gears to pass accuracy, reduce noise, reduce failures and increase gear l

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Kahraman, A. "Dynamic Analysis of a Multi-Mesh Helical Gear Train." Journal of Mechanical Design 116, no. 3 (1994): 706–12. http://dx.doi.org/10.1115/1.2919440.

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In this paper, the dynamic behavior of a multi-mesh helical gear train has been studied. The gear train consists of three helical gears, with one of the gears in mesh with the other two. A three dimensional dynamic model which includes transverse, torsional, axial and rotational (rocking) motions of the flexibility mounted gears has been developed. Two different loading conditions have been identified. In case-I, the system is driven by the gear in the middle, and in case-II, the system is driven by one of the gears at either end of the gear train. The phase difference between the two gear mes

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Khodaee, Alireza, and Arne Melander. "Finite Element Simulation as a Tool to Evaluate Gear Quality after Gear Rolling." Key Engineering Materials 554-557 (June 2013): 300–306. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.300.

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Gear rolling is a manufacturing technique for gears with many advantages like reduced material consumption, reduced scrap generation, fast cycle times, good surface quality and improved final properties of the gear wheels compared to conventional production technology based on machining. In order to make use of all these advantages it is desired to reach the final shape of the gear wheel already after rolling. This means that post treatments like grinding should be avoided. This puts high requirements on the shape accuracy after gear rolling. In this paper it was studied if finite element simu

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Siewerin, Benedikt J., Thomas Tobie, and Karsten Stahl. "Extended Wear Lifetime Calculation for Grease Lubricated Gears in Consideration of Surface Hardness and Roughness." MATEC Web of Conferences 366 (2022): 02001. http://dx.doi.org/10.1051/matecconf/202236602001.

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Greases have a variety of advantages when special operating conditions apply for gear lubrication, e. g. improved properties against continuous (or slow speed) wear. Often, gears with different surface hardness are combined, in order to reduce costs during manufacturing and heat treatment. However, this has detrimental effect on the wear lifetime. Consequently, the calculation of the wear service life within the gear design process is essential. One common way of wear lifetime prediction is the calculation method acc. to Plewe that is typically combined with a standardized wear test with case

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Yathish Rao. "Effect of Forging Grain Flow on Performance of Hypoid Gear Set - Case Study." ARAI Journal of Mobility Technology 3, no. 2 (2023): 575–81. http://dx.doi.org/10.37285/ajmt.3.2.3.

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Gear sets are one of the prime components in rear axle assembly that drives the wheel by taking the power from gear box. Typically forged gears are used for automotive applications in order to perform to its maximum level while in their service. In this case study heavy truck axle hypoid gear sets with deeper gear ratio (> 6) are considered. The batch-A & batch-B samples are produced through two separate forging routes. Batch A sample is processed through press forge route & Batch B samples are through ring rolling route. Both the batches (4 samples of each) are tested for gear set

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Dissertations / Theses on the topic "Gear case"

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Wilkinson, Christian Marco Raymond. "The durability of highly loaded, case hardened steel gears." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/8725.

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Nekzada, Nilofarr. "Life Cycle Assessment : A case study of the Automotive Hydraulic steering gear." Thesis, KTH, Industriell produktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183090.

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Det här examensarbetet består av en livscykelanalys av en styrsystem. Genom den studien har man försökt att fokusera och ta reda på hur en styrsystem kan påverka miljön genom sin livs längd. Alla faktorer som koldioxid utsläpp, energi-och material använding samt hur mycket detta påverkar miljön har studerats. Eftersom Livscykelanalysen brukar vara tidskrävande och detaljrat, har en enklare metod för snabbare result och analys av styrsystem valts. Den här metoden kallas för fast track LCA, det är en mindre komplicerad metod. Motivationen bakom denna studie är resurshushållning och energieffekti

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Robertson, Troy A. "A Case Study of Multiple-Use Finish Electrodes for Die-Sinking EDM." TopSCHOLAR®, 2015. https://digitalcommons.wku.edu/theses/1462.

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This study examines the use of one finishing electrode to finish multiple dies without remachining the electrode. The multiple-use electrode finishing experiment in this study addresses technology in the die-forging industry. Methods of manufacturing spherical straight bevel forge gear dies have relied on die-sinking Electrical Discharge Machining (EDM) practices that showed great potential for advancement. The focus of this study is solely on the improvements of electrode use in EDM finishing-processes. The surface finish quality itself is not an area of concern other than maintaining that it

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Malahova, Anna. "A methodology for developing Web-based CAD/CAM systems : case studies on gear shaper cutters." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9299.

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The research establishes a methodology for developing Web-based CAD/CAM software systems to industrial quality standards in a time and cost e ective manner. The methodology de nes the scope of applicability, outlines major considerations and key principles to follow when developing this kind of software, describes an approach to requirements elicitation, resource allocation and collaboration, establishes strategies for overcoming uncertainty and describes the design concerns for industrial Web-based CAD/CAM systems. The crucial parts of the methodology are a novel project development model fac

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Wright, Ian J. "Individual transferable quotas and concentration of the fleet, the case of the Scotia-Fundy mobile gear fleet." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24946.pdf.

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Kliš, Vojtěch. "Koncepční návrh dvoutoké převodovky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444968.

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This thesis deals with the conceptual design of a double clutch gearbox and the inspection of selected designed parts of this gearbox. The first part of the thesis is focused on the theory of automotive transmissions and analysis of already available double clutch gearboxes. The following is the conceptual design itself, which is based on the selected vehicle on which the transmission will be located and on driving resistances. Based on these default values, the gear graduation is selected, which affects the vehicle’s driving dynamics. With regard to the installation space, a conceptual arrang

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Bayti, Thelma Thokozile. "The link between economic development programmes (RDP & GEAR) and poverty reduction : (Airport Valley as an illustrative case)." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/921.

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The key debates after apartheid have been on the successes and shortcomings of the social and economic policies that were adopted after apartheid. The ANC government decided to approach poverty reduction by closing the inequality gap between racial groups in the country. It planned to provide services that would improve the poor people’s lives and also create employment to sustain development. To provide the necessary services, the government formulated two broad, but linked macroeconomic policies namely: the RDP and GEAR which focused on the demand and supply side respectively (Venter and Lan

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Pope, Janet M. "How do GEAR UP Program Experiences Support College Readiness| A Qualitative Narrative Multiple-case Study Exploring College Readiness." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002425.

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<p> While the American dream could have different meanings for Americans today, one dream for many middle and high school students is to have the opportunity to attend college; however, a challenge facing students across the United States is that they are graduating from middle and high school unprepared to enter the postsecondary institution of their choice. Despite over thirty years of educational reform attempts since “A Nation at Risk” (1983) was published, there continues to be a growing concern that middle and high school graduates are not college and career ready (Choy, Horn

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Uhlíř, Jaromír. "Návrh dvouosé automatické univerzální frézovací hlavy osazené elekrovřetenem s aplikací pohonů Harmonic-Drive." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229380.

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The goal of this thesis is to create a survey of possible design solutions to drive milling head. Evaluate them in terms of both economic and technical, then propose a universal milling head so that best met the requirements stated in the award of this work. MT, ÚVSSR, 2010, pages 96, picture 55

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Gulati, Sidhant, Andrea Vacca, and Manuel Rigosi. "A General Method to Determine the Optimal Profile of Porting Grooves in Positive Displacement Machines: the Case of External Gear Machines." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199832.

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In all common hydrostatic pumps, compressibility affects the commutation phases of the displacing chambers, as they switch their connection from/to the inlet to/from the outlet port, leading to pressure peaks, localized cavitation, additional port flow fluctuations and volumetric efficiency reduction. In common pumps, these effects are reduced by proper grooves that realizes gradual port area variation in proximity of these transition regions. This paper presents a method to automatically find the optimal designs of these grooves, taking as reference the case of external gear pumps. The propos

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Books on the topic "Gear case"

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Boniol, Frédéric, Virginie Wiels, Yamine Ait Ameur, and Klaus-Dieter Schewe, eds. ABZ 2014: The Landing Gear Case Study. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07512-9.

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Abernathy, Brendan. New owner-occupied housing in the inner city: The case of GEAR. Birmingham Polytechnic, Built Environment Development Centre, 1989.

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Kevin, Michalowski, ed. Cowboy action shooting: Gear, guns, tactics. KP Books, 2005.

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Getchell, Annie. The essential outdoor gear manual: Equipment care, repair, and selection. 2nd ed. Ragged Mountain Press, 2000.

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Wing, Ali. Giggle guide to baby gear: The smart shopping companion for new parents. Chronicle Books, 2008.

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Jendrucko, Richard J. Pollution prevention assessment for a manufacturer of gear cases for outboard motors. U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 1995.

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Fields, Denise. Toddler bargains: Secrets to saving 20% to 50% on toddler furniture, clothing, shoes, travel, gear, toys and more! Windsor Peak Press, 2003.

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Fields, Denise. Toddler bargains: Secrets to saving 20% to 50% on toddler furniture, clothing, shoes, travel, gear, toys and more! Windsor Peak Press, 2003.

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Italy) International Congress on Mechanized Tunnelling: Challenging Case Histories (2004 Turin. International Congress on Mechanized Tunnelling:Challenging Case Histories: Dedicated to Prof. Lelio Stragiotti on the 40th foundation anniversary of GEAM : Turin, 16-19 November 2004 : proceedings. Scientific and Organizing Secretariat, GEAM, Associazione georisorse e ambiente, Politecnico di Torino, 2004.

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Ofenbach, Elvira. L' Erma di Bretschneider: La storia di una casa editrice dal 1896 = die geschichte eines verlages (gegr. 1896) = a publishing house history since 1896. "L'Erma" di Bretschneider, 2000.

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Book chapters on the topic "Gear case"

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Boniol, Frédéric, and Virginie Wiels. "The Landing Gear System Case Study." In Communications in Computer and Information Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07512-9_1.

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Duane, Sinead, and Christine Domegan. "Case 5: Get Your Life into Gear." In Applying Quality of Life Research:. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5878-0_6.

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Charter, Martin, and Paul Whitehead. "Sotenäs Marine Recycling Centre in Sweden: A Case Study Related to Waste Fishing Gear." In Marine Plastics: Innovative Solutions to Tackling Waste. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-31058-4_10.

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AbstractThe chapter is a case study on the development of a Sweden’s first recycling centre focussed on waste fishing gear and other marine plastics based in Sotenäs. Key to the development of the centre has been a longer-term vision and commitment from the local municipality and the fishermen’s association. Working with partners across Sweden and locally, the centre has also developed an innovation testbed that is developing new test for polymers from waste fishing gear and aims launch new circular products. The chapter provides favourable learning for any organisation that will be tasked wit

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Du, Xiaolei, and Yong Xu. "Dynamical Behaviours of the Nose Landing Gear with Freeplay and Stochastic Disturbance." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70392-8_68.

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AbstractShimmy dynamics of a dual wheel nose landing gear system with torsional freeplay under stochastic lateral disturbances is studied. Dynamic characteristics of the deterministic case are numerically analyzed, especially the shimmy of the landing gear through bifurcation analysis. Meanwhile, the influences of the freeplay nonlinearity on shimmy behaviours are examined in detail. Impacts of stochastic lateral disturbances on the shimmy of the landing gear system are performed via time history and recurrence plots. Our results show that the interaction between the freeplay nonlinearity and

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Kamrani, Ali K., and Emad Abouel Nasr. "DFMo Case Study: Four-Gear Speed Reducer Design." In Engineering Design and Rapid Prototyping. Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-95863-7_5.

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Savicks, Vitaly, Michael Butler, and John Colley. "Co-simulation Environment for Rodin: Landing Gear Case Study." In Communications in Computer and Information Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07512-9_11.

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Banach, Richard. "The Landing Gear Case Study in Hybrid Event-B." In Communications in Computer and Information Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07512-9_9.

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Deshpande, Paritosh C., and Arron W. Tippett. "Application of Material Flow Analysis: Mapping Plastics Within the Fishing Sector in Norway." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_17.

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AbstractPlastic in our marine environment is now ubiquitous. Abandoned lost or otherwise discarded fishing gear (ALDFG) is of particular concern due to its ability to continue to function as a trap for marine organisms. In order for decision makers to act on this grave issue, we require data on the flow of ALDFG into the marine environment. One key tool for revealing the flow of material within a specific system is Material Flow Analysis (MFA). MFA takes a life cycle approach (cradle to grave) to assess energy or material flows in a system within space and time boundaries. It can be applied at

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Tesker, Efim I. "Improvement of Methods of Design and Analysis of Load-Carrying Capacity of Case-Hardened Cageless Bearing Units for Power Drives of Mobile Machines." In New Approaches to Gear Design and Production. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34945-5_21.

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Guertsman, V. Y. "A Case Study of Nose Landing Gear Failure Caused by Fatigue." In ICAF 2011 Structural Integrity: Influence of Efficiency and Green Imperatives. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1664-3_51.

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Conference papers on the topic "Gear case"

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Rackov, Milan, and Siniša Kuzmanovic. "An Overview of the Development Process of Universal Gear Reducers with External Helical Gears." In 10th International Scientific Conference on Advances in Mechanical Engineering. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-vem5er.

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Universal gearmotors with helical gears featuring external gearing certainly do not belong to products whose appearance decisively influences their market success. However, in any case, it is always preferable to see an aesthetically pleasing gearmotor rather than one that is not. For this reason, all manufacturers of universal gearmotors, aside from striving to increase gear ratios and load capacities within the same frame size, have endeavored to expand their product range where possible, refine their design, simplify the construction solutions, improve quality, and especially enhance the ap

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James, Joshua. "The Complex Synergy of Delayed Environmentally Assisted Cracking in Transmission Gear Assemblies." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19337.

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Abstract Often material failures involve a synergy of mechanisms, environmental stressors, design constraints and loading scenarios, that work in congress to cause an unpredicted fracture or acceleration of degradation leading to failure. This work covers a root cause case study analyzing the combined influence of various factors resulting in the delayed cracking of welded transmission gear assemblies. The gear assembly was comprised of a single ring gear electron-beam (e-beam) welded around its interior circumference onto a mated shaft. Both components were composed of a proprietary high stre

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Xu, Yan, Qian Yi, Kai Yi, CongBo Li, and ShuPing Yi. "Carbon Emissions Prediction Method for Gear Hobbing Based on Federated Learning with Multi-Source Data Cooperative Training." In 2024 IEEE 20th International Conference on Automation Science and Engineering (CASE). IEEE, 2024. http://dx.doi.org/10.1109/case59546.2024.10711380.

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Miyachika, Kouitsu, Satoshi Oda, and Hiroshige Fujio. "Effect of Gear-Side Case-Hardening on Residual Stresses of Case-Hardened Gears." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14385.

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Abstract This paper presents a study on effects of the case depth, the case-hardened part, the face width, the rim thickness and the standard pressure angle on residual stresses of case-hardened gears. A heat conduction analysis and an elastic-plastic stress analysis for the case-hardening process of spur gears were carried out by the three-dimensional finite-element method (3D-FEM), and then residual stresses were obtained. It was found that the compressive residual stress σ*θ = 30° at Hofer’s critical section of the end of the face width is smaller in magnitude than that of the middle of the

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Heingartner, Petra, and David Mba. "Determining Power Losses in Helical Gear Mesh: Case Study." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48118.

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Currently legislation is in place to encourage a reduction in energy usage. As such there is an increased demand for machinery with higher efficiencies, not only to reduce the operational costs of the machinery, but also to cut capital expenditure. The power losses associated with the gear mesh can be divided into speed and load dependant losses. This paper reviews some of the mathematical models proposed for the individual components associated with these losses, such as windage, churning, sliding and rolling friction loses. A mathematical model is proposed which predicts the power losses on

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Ho¨hn, B. R., P. Oster, and T. Tobie. "Systematic Investigations on the Influence of Case Depth on the Pitting and Bending Strength of Case Carburized Gears." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48015.

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The influence of case depth on the pitting and bending strength of case carburized gears was investigated. For this purpose an extensive test program on gears of different sizes, different gear geometry and with systematically varied case depth has been carried out. Residual stresses and further characteristics of the case hardened layer — that are influenced by the value of case depth as well — are examined. Based on the test results, rating formulas are derived to calculate the optimum case depth for maximum load capacity. Influence factors are defined, by which the influence of case depth o

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Krantz, Timothy L., and Robert F. Handschuh. "Gear Tooth Root Stresses of a Very Heavily Loaded Gear Pair: Case Study — Orbiter Body Flap Actuator Pinion and Ring Gear." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46274.

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The space shuttle orbiter’s body flap actuator gearing was assessed as a case study of the stresses for very heavily loaded external-internal gear pairs (meshing pinion and ring gear). For many applications, using the high point of single tooth contact (HPSTC) to locate the position of the tooth force is adequate for assessing the maximum tooth root stress condition. But for aerospace gearing such an approach may be inadequate for assessing the stress condition while also simultaneously minimizing mass. In this work specialized contact analyses and finite element methods were used to study gea

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Maruyama, N., K. Morikawa, and N. Hitomi. "Gear Case Shape and Rib Distribution for Reducing Automobile Transmission Gear Noise." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0074.

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Abstract This paper deals with an analysis of gear case shape and rib distribution with the aim of reducing automobile transmission gear noise. Modal analysis results and FEM calculations are presented to show that the vibration characteristics of the transmission case are basically determined by its cross section shape. A case with a cocoon section shape, composed of two curved planes, is shown to have greater plane stiffness, resulting in higher natural frequencies and a smaller number of modes in the 0–5 KHz bandwidth. It is concluded that, in order to raise the natural frequency of vibrati

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Kahraman, Ahmet. "Dynamic Analysis of a Multi-Mesh Helical Gear Train." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0046.

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Abstract In this paper, the dynamic behavior of a multi-mesh helical gear train is studied. The gear train consists of three helical gears, with one of the gears in mesh with the other two. An 18-degree-of-freedom dynamic model which includes transverse, torsional, axial and rotational (rocking) motions of the flexibly mounted gears is developed. Two different loading conditions are identified. For case I, the system is driven by the gear in the middle, and for case II, the system is driven by one of the gears at either end of the gear train. Gear mesh phases under each loading condition are d

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Ariga, Y., and Shiyeyoshi Nagata. "Research on Gear Cutter Tooth Profile for Semi-Topping: A Case of a Helical Gear." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0054.

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Abstract Gear tooth tips are frequently chamfered to prevent nicks or scuffing on the tooth surface. Some of the hob cutters and pinion cutters can be chamfered but many types of cutters should be used for a particular range of tooth numbers since the amount chamfering largely varies depending on the tooth number. However, intensive efforts in the design have made it possible to produce cutters with little variation of chamfering amount for a wide range of tooth numbers. The error in the amount of chamfering by a single cutter designed by the above method can be maintained within ±10 % for gea

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Reports on the topic "Gear case"

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Cao Romero, Julio A., Jorge Reyes-Avendaño, Julio Soriano, Leonardo Farfan-Cabrera, and Ali Erdemir. A Pin-on-Disc Study on the Electrified Sliding Wear of EVs Powertrain Gears. SAE International, 2022. http://dx.doi.org/10.4271/2022-01-0320.

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In contrast to conventional powertrains from internal combustion engine vehicles (ICEV), the tribological performance of powertrains of electric vehicles (EVs) must be further evaluated by considering new critical operating conditions such as electrical environments. The operation of any type of electric motor produces shaft voltages and currents due to various hardware configurations and factors. Furthermore, the common application of inverters intensifies this problem. It has been reported that the induced shaft voltages and currents can cause premature failure problems in tribological compo

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Jendrucko, R. J., J. A. Myers, and G. P. Looby. Pollution prevention assessment for a manufacturer of gear cases for outboard motors. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/125052.

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Cunha e Melo, Mariana, and Jonas de Abreu Castro. Regulation and competition: The case of the Brazilian fintech ecosystem. Center for Technology and Public Interest, SL, 2023. http://dx.doi.org/10.59262/fgyy58.

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Events such as the failure and rescue of Credit Suisse and the fallout of Silicon Valley Bank re-surfaces the old saying that prudential regulators should always favor banking concentration to improve financial stability, putting monetary authorities in opposition to competition authorities. In this paper, we want to switch gears and propose a framework to analyze monetary authorities' role in fostering competition. Then, we go through the case study of Brazil's financial system regulators and compare them with Brazil's competition authority's role and the importance of inter-agency cooperatio

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Bringéus, Eva, ed. Casemetodikens möjligheter för en språkutvecklande ämnesundervisning : Ett ULF-projekt. Malmö universitet, 2022. http://dx.doi.org/10.24834/isbn.9789178773350.

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Hur kan skolor och lärarutbildningar använda casemetodens didaktiska samtal för att möta och utveckla språkligt heterogena klassrum? Under tre år, från hösten 2019 till hösten 2022, fick lärare från grundskolor och gymnasieskolor i sydvästra Skåne tillsammans med forskare och lärare på Malmö universitet möjlighet att genomföra ett samverkansprojekt inom ramen för ULF, en nationell försöksverksamhet för praktiknära forskning. I rapporten presenteras en undersökning av fem ämnesspecifika case som nätverket tagit fram från dilemman i grundskolans och gymnasiets praktik. Resultatet visar att ämnes

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Moss, Robb, Tristan Gebhart, David Frost, and Christian Ledezma. Flow-Failure Case History of the Las Palmas, Chile, Tailings Dam. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2019. http://dx.doi.org/10.55461/gvif2980.

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This report documents the flow failure of the Las Palmas tailings dam that was induced by the 27 February 2010 Maule Chile M8.8 earthquake. The Las Palmas site is located in Central Chile in Region VII near the town of Talca. Construction of the tailings dam occurred between 1998 as part of a gold mining operation and was no longer in active use. The ground shaking from the earthquake induced liquefaction of the saturated tailings material and resulted in a flow failure that ran out upwards of 350 m, flowing downslope in two directions. This report is broken into three sections: A summary of t

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Courtright, E. L. CRADA with the General Motors Corporation and Pacific Northwest National Laboratory (PNL-042): Processing/Property Relationships in Centrifugally Cast AL-MMCs Gears. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/770366.

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Naddafi, Rahmat, Göran Sundblad, Alfred Sandström, et al. Developing management goals and associated assessment methods for Sweden’s nationally managed fish stocks : a project synthesis. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.31cfjep2i0.

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This report summarizes and synthesizes results from the Swedish Agency of Marine and Water Management (SwAM, or HaV) funded project “Förvaltningsmål för nationella arter (Management goals for nationally managed species)”. The objectives of the project have been to promote the development of management goals and associated status assessment methods and indicators, as well as reference points, for some nationally managed fish stocks both in coastal as well as freshwater areas. The report focusses largely on species and stocks that can be defined as data-poor. Such stocks are characterised by mar

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Börjesson, Patrik, Maria Eggertsen, Lachlan Fetterplace, et al. Long-term effects of no-take zones in Swedish waters. Edited by Ulf Bergström, Charlotte Berkström, and Mattias Sköld. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.10da2mgf51.

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Marine protected areas (MPAs) are increasingly established worldwide to protect and restore degraded ecosystems. However, the level of protection varies among MPAs and has been found to affect the outcome of the closure. In no-take zones (NTZs), no fishing or extraction of marine organisms is allowed. The EU Commission recently committed to protect 30% of European waters by 2030 through the updated Biodiversity Strategy. Importantly, one third of these 30% should be of strict protection. Exactly what is meant by strict protection is not entirely clear, but fishing would likely have to be fully

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Leontowitsch, Miranda, Rafaela Werny, Smilla Henning, et al. EQualCare: Alone but connected? Digital (in)equalities in care work and generational relationships among older people living alone ; white paper. Frankfurter Forum für interdisziplinäre Alternsforschung, Goethe-Universität Frankfurt am Main, 2025. https://doi.org/10.21248/gups.70657.

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The digital age requires people of all ages to communicate and organise their lives through digital technologies. The project EQualCare (“Alone but connected? Digital (in)equalities in care work and generational relationships among older people living alone”) investigated how the growing population of older people living alone is man-aging this transition, how it shapes their (non-)digital social networks and what changes on local, regional, national and international levels need to be brought about to ensure (digital) equality. This white paper gives insight into the multi-method work that wa

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Madrzykowski, Daniel. Firefighter Equipment Operational Environment: Evaluation of Thermal Conditions. UL Firefighter Safety Research Institute, 2017. http://dx.doi.org/10.54206/102376/igfm4492.

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The goal of this study was to review the available literature to develop a quantitative description of the thermal conditions firefighters and their equipment are exposed to in a structural fire environment. The thermal exposure from the modern fire environment was characterized through the review of fire research studies and fire-ground incidents that provided insight and data to develop a range of quantification. This information was compared with existing standards for firefighting protective equipment to generate a sense of the gap between known information and the need for improved unders

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