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Relevant bibliographies by topics / Friction frequency / Dissertations / Theses

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Dissertations / Theses on the topic 'Friction frequency'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Vairis, Achilles. "High frequency linear friction welding." Thesis, Online version, 1997. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.389136.

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2

Wang, Shuwen Kevin. "Characterisation of high-frequency dynamic friction." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611239.

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3

Michaux, Michael Andre. "Suppression of Friction-Induced Oscillations through Use of High-Frequency Dither Signals." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7150.

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Friction-induced oscillations occur in many engineering systems, often resulting in noise, vibration, and excessive or uneven wear. This research addresses the suppression of such oscillations, especially with application to braking systems, through the use of high-frequency dither signals. Brake squeal is an annoying and elusive problem too often present in braking systems of automobiles, trucks and aircraft. In previous work, the effectiveness of high-frequency dither to eliminate squeal in an automotive disc brake assembly was demonstrated experimentally. The main features of the dither-squ

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4

Nanjundiah, Kumar. "Study of Confinement and Sliding Friction of Fluids Using Sum Frequency Generation Spectroscopy." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1197046562.

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5

Erisen, Zuhtu Eren. "Frequency Domain Optimization Of Dry Friction Dampers Used For Earthquake Vibration Damping Of Buildings." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614134/index.pdf.

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There are many active and passive vibration control techniques to reduce the effect of energy on structures which emerges during an earthquake and reduce the displacement of buildings that is caused by ground acceleration. Main advantage of passive vibration control techniques over active vibration control techniques is<br>no external power or a sensor is required for passive vibration control devices (PVCDs) and it results in lower installation and maintenance costs. However, PVCDs require a predefined optimum damping ratio and optimum damping distribution along the structure since they are n

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6

Lynam, Thomas. "Exploitation of Redundant Inverse Term Frequency for Answer Extraction." Thesis, University of Waterloo, 2002. http://hdl.handle.net/10012/1190.

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An automatic question answering system must find, within a corpus,short factual answers to questions posed in natural language. The process involves analyzing the question, retrieving information related to the question, and extracting answers from the retrieved information. This thesis presents a novel approach to answer extraction in an automated question answering (QA) system. The answer extraction approach is an extension of the MultiText QA system. This system employs a question analysis component to examine the question and to produce query terms for the retrieval component which

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7

Marais, Gerhard. "An investigation into the role of compounds affecting friction, wear and lubricity." Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/23177.

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The high frequency reciprocating rig (HFRR) is typically used to determine the lubricity of diesel fuels and has been accepted as the universal test apparatus in most countries of the world. A study was undertaken to analyse results obtained with the HFRR instrument by identifying crucial factors contributing to friction and wear mechanisms during a lubricity test under given conditions that may lead to a better understanding of test results obtained. The transient temperature distribution on a semiinfinite disk due to a circular continuous oscillatory heat source was also modelled. The model

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8

Buehler, Betul. "Molecular Adhesion and Friction at Elastomer/Polymer Interfaces." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1164649632.

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9

Kurian, Anish. "Molecular Rearrangements at Polymeric Interfaces Probed by Sum Frequency Spectroscopy." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1301163423.

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10

Giner, Navarro Juan. "Advances Techniques for Time-Domain Modelling of High-Frequency Train/Track Interaction." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/90637.

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[EN] The aim of the present Thesis is to develop models for the study of very high-frequency phenomena associated with the coupling dynamics of a railway vehicle with the track. Through these models, this Thesis intends to address squeal noise as a particular case of rolling noise when the train negotiates a small radius curve. Wheel/rail interaction is the predominant source of noise emission in railway operations. Rolling contact couples the wheel and the rail through a very small area, characterised by strongly non-linear and non-steady state dynamics that differentiates rolling noise from

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11

VENTO, OSCAR. "Research on the fluid dynamics of diesel injection systems, design of innovative closed-loop control strategies, assessment of a new flowmeter for high-pressure fluids and 1D modelling of liquid and gaseous flows." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2927462.

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12

Bergström, Anna. "Winter maintenance and cycleways." Doctoral thesis, KTH, Civil and Architectural Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3346.

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<p>Increasing cycling as a means of personal travel couldgenerate environmental benefits if associated with acorresponding decrease in car-based transport. In seeking topromote cycling in wintertime, it is desirable to understandhow important the road surface condition is compared to otherfactors in people's decision to cycle or not. In this thesis,the possibility of increasing the number of cyclists byimproving the winter maintenance servicelevel on cycleways isexamined. The attitudes towards cycling during winter ingeneral, and in relation to winter maintenance of cycleways inparticular, is

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13

Burian, Josef. "Výpočtové modelováni komplexních vlastních frekvencí tramvajového kola při průjezdu zatáčkou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254382.

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This Master’s thesis deals with the computational modeling of complex natural frequencies of the tram wheels during cornering. The aim of this work is to determine eigenvalues, perform analysis of the influence of different parameters on eigenvalues and perform harmonic response analysis in order to find surface velocities that can be used in future noise emission analysis.

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14

Ezzeddine, Dhaker. "Modélisation du comportement dynamique d'un train de tiges de forage pétrolier : application aux vibrations latérales." Thesis, Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0053/document.

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Les vibrations des systèmes de forage pétrolier sont à l'origine de nombreux dysfonctionnements (ruptures des tiges par une fatigue accélérée, réduction des performances, endommagement des outils de mesures, endommagement des parois du puits, etc.). Face à la complexité des puits forés aujourd'hui, la maîtrise des vibrations des systèmes de forage est plus que jamais un enjeu majeur dans la réussite économique d'un projet pétrolier. Durant l'opération de forage, les tiges en rotation entrent en interaction avec les parois du puits (tubage et/ou formation) et encaissent dans certains cas des vi

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15

Singla, Saranshu. "Consequences of Interfacial Interactions on Adsorption and Adhesion." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541714540493631.

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16

Ezzeddine, Dhaker. "Modélisation du comportement dynamique d'un train de tiges de forage pétrolier : application aux vibrations latérales." Electronic Thesis or Diss., Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0053.

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Les vibrations des systèmes de forage pétrolier sont à l'origine de nombreux dysfonctionnements (ruptures des tiges par une fatigue accélérée, réduction des performances, endommagement des outils de mesures, endommagement des parois du puits, etc.). Face à la complexité des puits forés aujourd'hui, la maîtrise des vibrations des systèmes de forage est plus que jamais un enjeu majeur dans la réussite économique d'un projet pétrolier. Durant l'opération de forage, les tiges en rotation entrent en interaction avec les parois du puits (tubage et/ou formation) et encaissent dans certains cas des vi

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17

Bugler-Lamb, Samuel Lloyd. "The quantum vacuum near time-dependent dielectrics." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/29879.

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The vacuum, as described by Quantum Field Theory, is not as empty as classical physics once led us to believe. In fact, it is characterised by an infinite energy stored in the ground state of its constituent fields. This infinite energy has real, tangible effects on the macroscopic clusters of matter that make up our universe. Moreover, the configuration of these clusters of matter within the vacuum in turn influences the form of the vacuum itself and so forth. In this work, we shall consider the changes to the quantum vacuum brought about by the presence of time-dependent dielectrics. Such ch

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18

Gadaud, Pascal. "Etude par frottement interieur haute temperature des defauts structuraux dans le silicium monocristallin." Poitiers, 1987. http://www.theses.fr/1987POIT2273.

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Des experiences de frottement interne haute temperature en basse frequence ont ete realisees sur le silicium nonocristallin deforme. Plusieurs effets de relaxation ont ete relies a differents comportements des dislocations en correlation avec les parametres structuraux. L'interpretation de ces relaxations a permis de preciser les energies des mecanismes elementaires de glissement et le role du dopant, propres a la structure covalente

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19

Salles, Loïc. "Etude de l'usure par fretting sous chargements dynamiques dans les interfaces frottantes : application aux pieds d'aubes de turbomachines." Phd thesis, Ecole Centrale de Lyon, 2010. http://tel.archives-ouvertes.fr/tel-00600613.

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Les parties tournantes des turbomachines aéronautiques sont composées d'une succession de roues aubagées qui permettent le transfert de l'énergie entre l'air et le rotor. Ces roues aubagées constituent des pièces particulièrement sensibles car elles doivent répondre en termes de dimensionnement à des impératifs de performances aérodynamiques, d'aéroacoustique et de tenue mécanique à la rotation,à la température et à la charge aérodynamique. Le contact avec frottement existant au niveau des attaches aube-disque joue un rôle important sur les niveaux vibratoires.Ce travail porte sur l'étude de l

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20

Bon, Jérôme. "Etude des propriétés acoustiques basse fréquence des aérogels de silice à basse température." Grenoble 1, 1988. http://www.theses.fr/1988GRE10056.

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Le frottement interne et le module d'young a basse frequence d'aerogels de silice de faible densite sont mesures par la methode de la lame vibrante encastree entre 100 mk et 80 k. Les resultats sont proches de ceux de la silicice vitreuse, en l'absence d'helium adsorbe, et sont interpretes en termes de systeme a deux niveaux. L'adsorption d'helium modidie notablement les resultats

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21

Cheng, Gong. "Dynamics of dry friction damped systems subjected to multi-frequency excitations /." 2004. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=94733&T=F.

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22

Yen, Chi-Ying, and 閻其暘. "Study of Friction Welding of Dissimilar Metals by High Frequency Induction Heating." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4u3s3v.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>106<br>In this study, Friction Welding experiment of Dissimilar metals of 10mm diameter AISI 1045 carbon steel and SUS 304 stainless steel by high frequency induction Heating was carried out .In addition a finite element analysis software DEFORM is used to analyze the welding temperature under various forming condition such as in different coil types of double-twisted solenoid、 triple-twisted concentric and U-type and coil offset position of 0、1、 2、 3、4、5 mm .A better coil position offset for a better finished product during the experiment. The mechanical proper

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23

Li, Jun-jie, and 李俊潔. "Effects of Ultrasonic Frequency Variation on the Micro Copper Bumps Friction Phenomena in the Couples-polishing Activation Bonding Process of 3D IC Package." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09694242990833044733.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>101<br>Since the development of high-density integrated circuits (ICs), numerous studies have used 3D IC bonding technology to reduce processing temperatures and increase reliability. However, numerous stringent environmental conditions have been established for low-temperature processes. This has increased costs and created additional processing steps. Recently, researchers have proposed a couples-polishing activation-bonding (CAB) process. This process involves using ultrasonic vibration technology to induce interfacial friction, thereby increasing temperature

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