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Numerical Investigation of Friction and Wear Characteristics of Surfaces using MoS2 Nanoparticles in PAO

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dc.contributor.author Rahman, Hafiz Zia ur
dc.date.accessioned 2023-08-03T08:21:53Z
dc.date.available 2023-08-03T08:21:53Z
dc.date.issued 2021
dc.identifier.other 00000274875
dc.identifier.uri http://10.250.8.41:8080/xmlui/handle/123456789/35500
dc.description Supervisor: Dr. Raja Amer Azim en_US
dc.description.abstract Reduction of friction and wear is an ongoing challenge in design and operation of machines and implanted joints. Wear shorten the life of contacting parts. Inclusion of nanoparticles in modern era has emerged as promising solution. Various nanoparticles act as lubricant additives like silver, diamond and copper oxide nanoparticles. Many lubricants are used as base lubricants like dodecane, mineral base oil, polyethylene glycol, fully formulated oil and polyalfaolefin oil. Molybdenum disulfide 𝑀𝑜𝑆2 particles are modeled in Polyalphaolefin base oil. The effect of 𝑀𝑜𝑆2 nanoparticles on real contact area has also been modeled. There is suitable concentration below which nanoparticles cannot reduced friction force. On the basis of results it is stated that nanoparticles have dual effect. Inclusion of direct and indirect method to solve overall contact problem. To study the effect of addition of nanoparticles in synthetic base oils, a mathematical model has been formulated. It is a multisacle model comprising a rough surface sub contact model and statistical sub contact model. Rough surface contact model are based on micrometer sized roughness features while statistical contact model are based on modeling of nanoparticles in between rough surfaces. This contact model can also be used for other nanoparticles of same size and roughness. The model is verified using existing experimental data. Parametric study is done, varying the load, particle size and particle weight fraction. COF and wear is evaluated and discussed. en_US
dc.language.iso en en_US
dc.publisher College of Electrical & Mechanical Engineering (CEME), NUST en_US
dc.subject Key Words: Nanolubricant, Nanoparticle, real area of contact, lubricants, PAO en_US
dc.title Numerical Investigation of Friction and Wear Characteristics of Surfaces using MoS2 Nanoparticles in PAO en_US
dc.type Thesis en_US


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