| dc.contributor.author | Mokšin, Vadim | |
| dc.date.accessioned | 2023-09-18T20:30:06Z | |
| dc.date.available | 2023-09-18T20:30:06Z | |
| dc.date.issued | 2020 | |
| dc.identifier.issn | 1687-8132 | |
| dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/150472 | |
| dc.description.abstract | This article presents the results of experimental investigation of tribological properties of commercial mineral motor oil with chiral nematic (also known as twisted nematic or cholesteric) liquid crystal additives. Cholesteryl stearate and valerate (fatty acid cholesterol esters) liquid crystals were used as oil additives in investigation. Tribological experiments were performed using a block-on-disc-type tribo-test machine at constant experiment time and sliding velocity conditions. The load (contact pressure), concentration of liquid crystalline additive in oil and Rz roughness of steel–steel friction surfaces were taken as variable parameters. The mean coefficient of friction of steel–steel friction pair lubricated by oil with and without liquid crystal additives and near-contact temperature were taken as dependent variables. Regression equations were then derived for each lubricant and tribological efficiency of liquid crystals as oil additives was evaluated. It was established that coefficient of friction of steel–steel friction pair and near-contact temperature are reduced to about a half in the presence of liquid crystal additives. Results of tribological experiments show that tribological efficiency of liquid crystals as oil additives increases with increase in their molecular mass. | eng |
| dc.format | PDF | |
| dc.format.extent | p. 1-9 | |
| dc.format.medium | tekstas / txt | |
| dc.language.iso | eng | |
| dc.relation.isreferencedby | DOAJ | |
| dc.relation.isreferencedby | INSPEC | |
| dc.relation.isreferencedby | Scopus | |
| dc.relation.isreferencedby | Science Citation Index Expanded (Web of Science) | |
| dc.source.uri | https://journals.sagepub.com/doi/pdf/10.1177/1687814020945474 | |
| dc.source.uri | https://doi.org/10.1177/1687814020945474 | |
| dc.title | Tribological capabilities of chiral nematic liquid crystal additives in mineral motor oil | |
| dc.type | Straipsnis Web of Science DB / Article in Web of Science DB | |
| dcterms.accessRights | This article is distributed under the terms of the Creative Commons Attribution 4.0 License
(https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). | |
| dcterms.license | Creative Commons – Attribution – 4.0 International | |
| dcterms.references | 20 | |
| dc.type.pubtype | S1 - Straipsnis Web of Science DB / Web of Science DB article | |
| dc.contributor.institution | Vilniaus Gedimino technikos universitetas | |
| dc.contributor.faculty | Mechanikos fakultetas / Faculty of Mechanics | |
| dc.subject.researchfield | T 009 - Mechanikos inžinerija / Mechanical enginering | |
| dc.subject.vgtuprioritizedfields | FM0101 - Fizinių, technologinių ir ekonominių procesų matematiniai modeliai / Mathematical models of physical, technological and economic processes | |
| dc.subject.ltspecializations | L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies | |
| dc.subject.en | mineral motor oil | |
| dc.subject.en | additives | |
| dc.subject.en | chiral nematic liquid crystals | |
| dc.subject.en | block-on-disc tribometer | |
| dc.subject.en | coefficient of friction | |
| dc.subject.en | temperature | |
| dcterms.sourcetitle | Advances in mechanical engineering | |
| dc.description.issue | iss. 7 | |
| dc.description.volume | vol. 12 | |
| dc.publisher.name | SAGE | |
| dc.publisher.city | London | |
| dc.identifier.doi | 000556336000001 | |
| dc.identifier.doi | 10.1177/1687814020945474 | |
| dc.identifier.elaba | 66181736 | |
