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Tribo-Device to Quantify of Friction in Rake Face Using Line Contact Mechanism Under Different Machining Conditions

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dc.contributor.author Al Fleety, Al Hussein
dc.date.accessioned 2022-09-19T06:46:49Z
dc.date.available 2022-09-19T06:46:49Z
dc.date.copyright 2021 en_US
dc.date.issued 2021-12-28
dc.identifier.uri http://hdl.handle.net/10725/14014
dc.description.abstract In typical body contact, the friction force is proportional to the load between the two surfaces. However, in cutting conditions, it is more complicated due to the presence of sliding and shearing actions on the interface. The purpose of this research is to introduce and evaluate a new Tribo-Device aims to isolate the aggressive contact on the rake face in order to better understand the high-pressure contact effect on it. The device that is based on line-contact mechanism mimics the normal force applied on the rake face to associate a pressure field results in friction forces, which represents accurately the contact zone. The design validation process depends on a comparison of forces between the experiments, conventional cutting simulation and another finite element model that simulates the functionality of the introduced device. The friction factor used in the simulations is calculated using the experimental analysis. The stress maps generated at the contact of the two FEM models are also compared. The results show that the new device has high potentials in simulating high contact pressure on the rake face. The research will give an enhanced understanding of the tribological properties at the tool-chip interface under high contact pressure. The introduced device is also used to evaluate the effect of sliding speed, normal load, cryogenic coolant and solid lubricants on the tribological properties occurred at the interface. The results show that sliding speed and normal load have a notable influence on friction factor, wear mechanisms and tool life. In addition, it was shown that solid lubricants are mainly useful in reducing friction forces generated at the interface, therefore, improve tool life by protecting it from the aggressive mechanical load. On the other hance, cryogenic gases can be considered as a coolant and lubricant. However, its best performance is at high temperature zones. The results of this research can be used to make corrective actions on cutting simulation, test cutting tool coatings under aggressive wear condition and evaluate new types of metal cutting lubricants. en_US
dc.language.iso en en_US
dc.subject Lubrication and lubricants en_US
dc.subject High pressure (Technology) en_US
dc.subject Tribology en_US
dc.subject Metal-cutting tools en_US
dc.subject Machining en_US
dc.subject Lebanese American University -- Dissertations en_US
dc.subject Dissertations, Academic en_US
dc.title Tribo-Device to Quantify of Friction in Rake Face Using Line Contact Mechanism Under Different Machining Conditions en_US
dc.type Thesis en_US
dc.term.submitted Fall en_US
dc.author.degree Doctor of Pharmacy en_US
dc.author.school SOE en_US
dc.author.idnumber 201304270 en_US
dc.author.commembers Ammouri, Ali
dc.author.commembers Zgheib, Nadim
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.physdesc 1 online resource (xv, 101 leaves): ill. (chiefly col.) en_US
dc.author.advisor Bejjani, Roland
dc.keywords Solid lubricant en_US
dc.keywords Cryogenic machining en_US
dc.keywords Tribology en_US
dc.keywords Tool life en_US
dc.keywords High pressure contact en_US
dc.description.bibliographiccitations Includes bibliographical references (leaf 73-77) en_US
dc.identifier.doi https://doi.org/10.26756/th.2022.447
dc.author.email alhussein.alfleety@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php en_US
dc.publisher.institution Lebanese American University en_US
dc.author.affiliation Lebanese American University en_US


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