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Relevant bibliographies by topics / Slippage indicator

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Academic literature on the topic 'Slippage indicator'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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Journal articles on the topic "Slippage indicator"

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De Meter, E. C. "Min-Max Load Model for Optimizing Machining Fixture Performance." Journal of Engineering for Industry 117, no. 2 (1995): 186–93. http://dx.doi.org/10.1115/1.2803293.

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Spherical-tipped locators and clamps are often used for the restraint of castings during machining. For structurally rigid castings, contact region deformation and micro-slippage are the predominant modes of workpiece displacement. In turn contact region deformation and micro-slippage are heavily influenced by contact region loading. Maximum loading magnitude has been shown to be a good indicator of workpiece displacement. This paper presents an algorithm which uses the min-max loading criteria as a basis for determining the optimal layout of locators and clamps as well as clamp actuation inte

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A. Alsayyah, Yasir, and Hussein A. Jebur. "The Effect of Some Primary Tillage Equipment on Performance Efficiency Under Two Level of Soil Moisture Content and Different Machinery Unit Speeds." Al-Qadisiyah Journal For Agriculture Sciences (QJAS) (P-ISSN: 2077-5822 , E-ISSN: 2617-1479) 7, no. 2 (2018): 206–18. http://dx.doi.org/10.33794/qjas.vol7.iss2.43.

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A field experiment was conducted in the experiment fields of the college of agriculture - University of Baghdad – Abu Ghraib , 2016 in a silt clay loam soil , to Evaluate the effect of some primary tillage equipment and two of levels of soil moisture content in some of performance efficiency indicator for different forward speed , ArmaTrac 845e and ITM 285 New tractor with moldboard and chisel and sweep plow as a machinery unit have been used in this study . Two levels of soil Moisture content include (18 – 20 % ) and (14 – 16%) represented main plot , three types of plow ( moldboard , c

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Faux, A. M., G. M. Lawrence, M. E. Wheaton, M. G. Wallis, C. L. Jeffery, and R. K. Griffiths. "Slippage in the NHS breast screening programme: an assessment of whether a three year screening round is being achieved." Journal of Medical Screening 5, no. 2 (1998): 88–91. http://dx.doi.org/10.1136/jms.5.2.88.

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Background The NHS breast screening programme (NHSBSP) was established in 1987 to screen women aged 50–64 every three years to achieve a significant reduction in breast cancer mortality. Ensuring that women are re-invited every three years (that is, a three year screening round is in operation) is becoming increasingly difficult as pressure on the service rises. Coverage measures the proportion of eligible women receiving a screen in the previous three years and is currently used as an NHS performance indicator, while uptake measures the proportion of invited women who attend for screening. Da

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Huang, Jiahai, Caixiu Luo, Pei Yu, and Huimin Hao. "A methodology for calculating limit deceleration of flexible hoisting system: A case study of mine hoist." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 4 (2020): 342–52. http://dx.doi.org/10.1177/0954408920925017.

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Mine hoist is a typical flexible lifting system. Due to the cable flexibility, the system is prone to severe shocks and even slippage during emergency braking. To establish a safe emergency braking operation for mine hoist, retarded velocity should be less than the limit deceleration value. The simplified mathematical model shows that the system dynamic response along the longitudinal axis of the wire rope (longitudinal dynamics) is a typical second-order underdamped one. Due to the inherent characteristics of the flexible lifting system, the longitudinal dynamic response under slippage condit

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Rahmanian, Mohammad R., Roberto Aguilera, and Apostolos Kantzas. "A New Unified Diffusion—Viscous-Flow Model Based on Pore-Level Studies of Tight Gas Formations." SPE Journal 18, no. 01 (2012): 38–49. http://dx.doi.org/10.2118/149223-pa.

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Summary In this study, single-phase gas-flow simulation that considers slippage effects through a network of slots and microfractures is presented. The statistical parameters for network construction were extracted from petrographic work in tight porous media of the Nikanassin Group in the Western Canada Sedimentary Basin (WCSB). Furthermore, correlations between Klinkenberg slippage effect and absolute permeability have been developed as well as a new unified flow model in which Knudsen number acts implicitly as a flow-regime indicator. A detailed understanding of fluid flow at microscale lev

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El Morsy, Mohamed, and Gabriela Achtenova. "DETERMINATION OF ROLLER BEARING INNER RACE DEFECT BASED ON VIBRATION SIGNAL." Volume 24, No 3, September 2019 24, no. 3 (2019): 467–75. http://dx.doi.org/10.20855/ijav.2019.24.31291.

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The present article’s intent is to measure and identify the roller bearing inner race defect width and its corresponding characteristic frequency based on filtered time-domain vibration signal. In case localized fault occurs in a bearing, the rolling elements encounter some slippage as the rolling elements enter and leave the bearing load zone. As a consequence, the incidence of the impacts never reproduce exactly at the same position from one cycle to another. Moreover, when the position of the defect is moving with respect to the load distribution zone of the bearing, the series of impulses

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Sidorov, M. V., A. V. Lavrov, V. A. Voronin, and A. V. Sidorova. "Engine Power Required When Using a Tractor with a Technology Module." Agricultural Machinery and Technologies 15, no. 2 (2021): 33–40. http://dx.doi.org/10.22314/2073-7599-2021-15-2-33-40.

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A shortage of class 2 and class 3 tractors was observed in peasant farms. As a solution to this problem, it was proposed to develop a technological module that would increase the versatility of class 1.4 tractors by transferring them to a higher traction class. (Research purpose) The authors aimed to substantiate the nominal operating power of the engine for a tractor with a technological module. (Materials and methods) To calculate the required power, the authors proposed a method that takes into account the design features of the modular construction of a machine-tractor unit. (Results and d

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Fakhri, Marwah Sabah, and Ihsan A. Baqer. "Numerical Analysis of Contact Area under Slippage Conditions." Journal of University of Babylon for Engineering Sciences 27, no. 1 (2019): 312–23. http://dx.doi.org/10.29196/jubes.v27i1.2004.

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In the present paper, the contact of area, which is produced between a pair of bodies (flat surface and hemi-cylindrical shape), has been studied under the effect of slippage occurrence, where it represents one of the important problems in the mechanical engineering, especially in robotic design. Many parameters have been studied, like frictional forces, equivalent stresses, friction coefficient, and contact area of deformation. The behavior of these parameters has been monitored during the slippage that is generated between the flat surface made from cast alloy steel and the other part made f

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Raessa, Mohamed, Weiwei Wan, Keisuke Koyama, and Kensuke Harada. "Planning to Flip Heavy Objects Considering Soft-Finger Contacts." International Journal of Automation Technology 15, no. 2 (2021): 158–67. http://dx.doi.org/10.20965/ijat.2021.p0158.

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In this study, we implemented a constrained motion planner that enables robot manipulators to flip large and heavy objects without slippage while continuously holding them. Based on the soft-finger maximum friction torque, we developed a constraint relaxation method to estimate the critical rotation angle that a robot end effector can rotate while avoiding in-hand slippage. The critical rotation angle was used in a motion planner to sample safe configurations and generate slippage-free motion. The proposed planner was implemented using a 6-degree-of-freedom robot arm and a 2-finger robotic gri

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Janulevičius, Algirdas, and Kazimieras Giedra. "THE SLIPPAGE OF THE DRIVING WHEELS OF A TRACTOR IN A CULTIVATED SOIL AND STUBBLE." TRANSPORT 24, no. 1 (2009): 14–20. http://dx.doi.org/10.3846/1648-4142.2009.24.14-20.

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The article analyses the relation between the slippage of driving wheels and the traction characteristics of a tractor. The indicators for estimating wheel slippage are a coefficient of tractor weight force utilization for driving wheel grip and a coefficient of the ratio of trailer and tractor mass. The dependencies of wheel slippage on the weight utilization coefficient of tractors and the ratio of trailer and tractor mass are overviewed. The presented and carried out analysis of the equations of weight utilization coefficient ϕ g determined its dependencies on rolling resistance coefficient

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Dissertations / Theses on the topic "Slippage indicator"

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Jakel, Roland. "Das neue Kontaktmodell mit endlicher Reibung in Creo Simulate 3.0 : Theorie und Anwendung ; Vergleich mit dem reibungsfreien und unendlich reibungsbehafteten Kontaktmodell." Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-206817.

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Der Vortrag beschreibt die zugrunde liegende Theorie und die Softwarefunktionalität des in PTC Creo Simulate 3.0 eingeführten Kontaktmodells mit endlicher Reibung und vergleicht dieses mit den bis Creo Simulate 2.0 exklusiv verwendeten Kontaktmodellen (ideal reibungsfrei und unendlich reibungsbehaftet). An zwei Modellbeispielen (ein von zwei Bremsbacken geklemmtes Bremsschwert und ein verschraubtes Schwungrad) wird versucht, die Funktionsweise des neuen Modells zu demonstrieren. Wegen aktueller Qualitätsprobleme der Software wird die Brauchbarkeit der Kontaktmodelle für den Anwender bewertet (

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Jakel, Roland. "Das neue Kontaktmodell in Mechanica WF 4.0 mit Reibung : Theoretische Grundlagen und Anwendungsbeispiele." Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200900787.

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Der Vortrag stellt das neue, unendlich reibungsbehaftete Kontaktmodell der FEM-Berechnungssoftware Pro/ENGINEER Mechanica in der Version Wildfire 4.0 von PTC vor. Dabei werden sowohl die Grundlagen des reibungsfreien Kontaktes als auch die Theorie des unendlich reibungsbehafteten Kontaktmodells behandelt sowie die Grundlagen der zur numerischen Lösung in der Software verwendeten Penalty- und Newton-Raphson-Methode erläutert. Als Anwendungsbeispiel für das reibungsfreie Kontaktmodell wird ein Zylinderrollenlager vollständig mit sämtlichen Wälzkontakten für verschiedene Lager- und Einbauspiele

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Book chapters on the topic "Slippage indicator"

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Vinter, Maggie. "Dying Politically." In Last Acts. Fordham University Press, 2019. http://dx.doi.org/10.5422/fordham/9780823284269.003.0003.

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Most readers of Christopher Marlowe’s Edward II locate the play’s radicalism in the sexualized challenge that Edward’s homoerotic relations with Gaveston and the Spensers pose to dynastic monarchy and aristocratic governance. This chapter replaces erotics with necrotics to argue that royal sodomy and homoerotic friendship can be accommodated by the play’s political order with relative ease; royal death, by contrast, exposes fundamental weaknesses within dominant conceptions of sovereignty. While recent queer theory has aligned queerness with mortality, Edward II pointedly detaches sexuality from death, offering Edward political opportunities in dying that are unavailable through queer eroticism. In prison, Edward subsumes regimes of dynastic sovereignty within the biological existence of the body. Even once dead, Edward is not superseded because the theater suggests he may still be minimally present, in the slippage between bodies and in props, in the presence of an actor offstage, and in the violence carried out in his name. Rather than supporting a particular structure of power, Edward’s death indicates the range of political potentialities inherent in exposure to mortality, which might alternatively support republican, absolutist, bureaucratic, or tyrannical regimes.

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Conference papers on the topic "Slippage indicator"

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Michael, Andreas. "Geomechanical Implications of Reservoir Depletion vis-à-vis Post-Blowout Well Capping: A Gulf of Mexico Case Study." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205878-ms.

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Abstract Reservoir depletion can impose major implications on wellbore integrity following blowouts. A loss-of-well-control event can lead to prolonged post-blowout discharge from the wellbore causing considerable reservoir depletion in a well's drainage area. Fractures initiated and propagated during well capping procedures following an offshore blowout can lead to reservoir hydrocarbons broaching the seafloor. In this paper, reservoir depletion is examined for a case study on actual deepwater Gulf of Mexico (GoM) parameters, evaluating analytically its impacts on in-situ reservoir conditions

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Liu, Yang, Qi Yuan, and Zuo Zhou. "Contact Status Analysis of Rod-Fastened Rotors With Hirth Coupling in Gas Turbines." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42816.

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The aim of this paper is to provide some basis for the design and assembly of a rod-fastened rotor with Hirth coupling. The rod-fastened rotor is comprised of a series of discs clamped together by a central tie rod or several tie rods on the pitch circle diameter. The key difference between a rod-fastened rotor and an integrated one is the existence of contact interfaces. The contact status of contact interface in the rod-fastened rotor is the key concern for accurate rotor dynamic analysis. Therefore, the method of accurately describing the slippage status and contact status is presented in t

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Salehi-Khojin, Amin, and Nader Jalili. "A Shear-Lag Model for Nanotube Reinforced Piezoelectric Polymeric Composites Subjected to Electro-Thermo-Mechanical Loadings." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35411.

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Understanding the stress transfer between nanotube reinforcements and surrounding matrix is an important factor in determining the overall mechanical properties of nanotube-reinforced composites. An efficient load transfer from the polymer matrix to the nanotube through interface is required to take the advantage of very high Young’s modulus and strength of carbon nanotubes in the composites. On the other hand, considerable energy dissipation can be obtained by interfacial slippage in the interface of nanotube and matrix which is beneficial in term of structural damping. In order to obtain a c

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Fakher, Sherif, Youssef Elgahawy, Hesham Abdelaal, and Abdulmohsin Imqam. "What are the Dominant Flow Regimes During Carbon Dioxide Propagation in Shale Reservoirs’ Matrix, Natural Fractures and Hydraulic Fractures?" In SPE Western Regional Meeting. SPE, 2021. http://dx.doi.org/10.2118/200824-ms.

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Abstract Carbon dioxide (CO2) injection in low permeability shale reservoirs has recently gained much attention due to the claims that it has a large recovery factor and can also be used in CO2 storage operations. This research investigates the different flow regimes that the CO2 will exhibit during its propagation through the fractures, micropores, and the nanopores in unconventional shale reservoirs to accurately evaluate the mechanism by which CO2 recovers oil from these reservoirs. One of the most widely used tools to distinguish between different flow regimes is the Knudsen Number. Initia

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Wolkowicz, Kelilah, Jesse Pentzer, Christopher Miller, Jason Z. Moore, and Sean N. Brennan. "On-Line Estimation of Wheelchair Tire Slip Utilizing an Instantaneous Center of Rotation Extended Kalman Filter." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9699.

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There are over three million wheelchair users within the United States and that number is growing. This paper is concerned with improving the safety of wheelchair operation by the on-line estimation of tire slip. Wheelchair tire slip is a result of icy or low friction surfaces, often representative of dangerous conditions. In this research, wheel slip is detected by estimating the instantaneous center of rotation (ICR) locations of wheelchair wheels relative to the ground surface. Any departure of the estimated ICR positions from the wheel contact point indicates slippage is occurring. An Exte

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Shimizu, Yusuke, Akira Kobayashi, Kazuhiro Watanabe, et al. "Study on Relations Between Abnormal Vibration and Friction Characteristics of a Roller Depending on Water Content for Three Types of Fined Coal." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24338.

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Abstract In coal-fired power generation, it is necessary to pulverize coal, and a vertical roller mill with excellent crushing efficiency has become the mainstream. However, In the process of pulverization by compression and shear, abnormal vibrations, which are considered to be self-excited vibration, occurs rarely. As a method of reducing self-excited vibration, adding water has been empirically performed in the field. Since the powder state changes due to water addition, it is necessary to investigate how the vibration characteristics and slip characteristics change. In this paper, we exami

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Ghazanfari, Amir, Wenbin Li, Ming C. Leu, Jeremy Watts, Yiyang Zhuang, and Jie Huang. "Freeform Extrusion Fabrication of Advanced Ceramic Components With Embedded Sapphire Optical Fiber Sensors." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9270.

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Traditionally, sensors to be integrated into a structural component are attached to or mounted on the component after the component has been fabricated. This tends to result in unsecured sensor attachment and/or serious offset between the sensor reading and the actual status of the structure, leading to performance degradation of the host structure. This paper describes a novel extrusion-based additive manufacturing process that has been developed to enable embedment of sensors in ceramic components during the part fabrication. In this process, an aqueous paste of ceramic particles with a very

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Fujioka, Yasuo, Koichi Hara, and Toshiyuki Sawa. "Non-Rotational-Loosening Behavior of Bolted Joint Constructed From Steel Tube and Plates." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13836.

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The reduction in axial tension was investigated in bolted joints, which comprise two hot-rolled steel plates and a carbon steel tube sandwiched between the plates. After tightening the bolts, vibration tests were carried in the following two cases. In the first case, flat-faced steel tubes without having any serrations on both ends of the tube were used, and the effect of wave profiles of the external load was investigated. These wave profiles are those of random waves, quasi-random waves that are obtained by only eliminating random waves with small amplitudes, and 7-step programmed waves gene

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Ramos Gurjao, Kildare George, Eduardo Gildin, Richard Gibson, and Mark Everett. "Mechanistic Modeling of Distributed Strain Sensing DSS and Distributed Acoustic Sensing DAS to Assist Machine Learning Schemes Interpreting Unconventional Reservoir Datasets." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206049-ms.

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Abstract The use of fiber optics in reservoir surveillance is bringing valuable insights to fracture geometry and fracture-hit identification, stage communication and perforation cluster fluid distribution in many hydraulic fracturing processes. However, given the complexity associated with field data, its interpretation is a major challenge faced by engineers and geoscientists. In this work, we propose to generate Distributed Strain/Acoustic Sensing (DSS/DAS) synthetic data of a cross-well fiber deployment that incorporate the physics governing hydraulic fracturing treatments. Our forward mod

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