Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning
Perhaps the most thorough characterization of the elevated pressure properties of any commercial EHL lubricant is presented here for a gear oil. Compressibility, thermal conductivity, and low-shear viscosity were measured. Of particular interest is the shear dependence of viscosity, measured across...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , |
| التنسيق: | article |
| منشور في: |
2016
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/3003 http://dx.doi.org/10.1177/1350650115600185 https://journals.sagepub.com/doi/abs/10.1177/1350650115600185 |
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| _version_ | 1864513459791593472 |
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| author | Bair, Scott |
| author2 | Habchi, Wassim Sperka, Petr Hartl, Martin |
| author2_role | author author author |
| author_facet | Bair, Scott Habchi, Wassim Sperka, Petr Hartl, Martin |
| author_role | author |
| dc.creator.none.fl_str_mv | Bair, Scott Habchi, Wassim Sperka, Petr Hartl, Martin |
| dc.date.none.fl_str_mv | 2016-02-04T11:53:48Z 2016-02-04T11:53:48Z 2016 2016-03-07 |
| dc.identifier.none.fl_str_mv | 1350-6501 http://hdl.handle.net/10725/3003 http://dx.doi.org/10.1177/1350650115600185 Bair, S., Habchi, W., Sperka, P., & Hartl, M. (2016). Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 230(3), 289-299. https://journals.sagepub.com/doi/abs/10.1177/1350650115600185 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Perhaps the most thorough characterization of the elevated pressure properties of any commercial EHL lubricant is presented here for a gear oil. Compressibility, thermal conductivity, and low-shear viscosity were measured. Of particular interest is the shear dependence of viscosity, measured across four decades of stress, which shows two transitions each with a specific value of power-law exponent. An attempt to capture a suspected third transition at very high stress resulted in mechanical degradation of the liquid in the viscometer. Numerical simulations of a point contact between a steel ball and a glass disc showed good agreement over a range of slide-to-roll ratio for the measured central thickness. The agreement for the minimum thickness was excellent. A new result is that shear-thinning of a higher molecular weight component that occurs from 3 to 200 kPa had little effect on the film thickness and could therefore be neglected in a film thickness calculation. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_7257708b20efa141c0f9db1677a7c2b6 |
| identifier_str_mv | 1350-6501 Bair, S., Habchi, W., Sperka, P., & Hartl, M. (2016). Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 230(3), 289-299. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/3003 |
| publishDate | 2016 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinningBair, ScottHabchi, WassimSperka, PetrHartl, MartinPerhaps the most thorough characterization of the elevated pressure properties of any commercial EHL lubricant is presented here for a gear oil. Compressibility, thermal conductivity, and low-shear viscosity were measured. Of particular interest is the shear dependence of viscosity, measured across four decades of stress, which shows two transitions each with a specific value of power-law exponent. An attempt to capture a suspected third transition at very high stress resulted in mechanical degradation of the liquid in the viscometer. Numerical simulations of a point contact between a steel ball and a glass disc showed good agreement over a range of slide-to-roll ratio for the measured central thickness. The agreement for the minimum thickness was excellent. A new result is that shear-thinning of a higher molecular weight component that occurs from 3 to 200 kPa had little effect on the film thickness and could therefore be neglected in a film thickness calculation.PublishedN/A2016-02-04T11:53:48Z2016-02-04T11:53:48Z20162016-03-07Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1350-6501http://hdl.handle.net/10725/3003http://dx.doi.org/10.1177/1350650115600185Bair, S., Habchi, W., Sperka, P., & Hartl, M. (2016). Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 230(3), 289-299.https://journals.sagepub.com/doi/abs/10.1177/1350650115600185enProceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribologyinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/30032021-03-19T09:59:50Z |
| spellingShingle | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning Bair, Scott |
| status_str | publishedVersion |
| title | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| title_full | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| title_fullStr | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| title_full_unstemmed | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| title_short | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| title_sort | Quantitative elastohydrodynamic film forming for a gear oil with complex shear-thinning |
| url | http://hdl.handle.net/10725/3003 http://dx.doi.org/10.1177/1350650115600185 https://journals.sagepub.com/doi/abs/10.1177/1350650115600185 |