Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Investigating the effect of linear velocity in reciprocating contacts
Dissertation (MEng (Chemical Engineering)) Univercity of Pretoria, 2021.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2021
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613644971311104 |
|---|---|
| access_status_str | Open Access |
| author2 | De Vaal, Philip L. |
| author_browse | De Vaal, Philip L. |
| author_facet | De Vaal, Philip L. |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng (Chemical Engineering)) Univercity of Pretoria, 2021. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/78514 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:26.088Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/78514 Investigating the effect of linear velocity in reciprocating contacts De Vaal, Philip L. pinguin.kleynhans@gmail.com Kleynhans, Christo UCTD Tribology Stribeck Curves Oscillating Frequency Hersey Number Friction and Wear Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Dissertation (MEng (Chemical Engineering)) Univercity of Pretoria, 2021. In Tribology, the well-known Stribeck curve is often used to relate friction behaviour to the properties of a system. Richard Stribeck, (Jacobson, 2003), (Stribeck, 1902) developed these curves while researching various bearings and found that the Stribeck curve can be generated for all tribological contacts of the Hertzian type. These curves give a relation between the coefficient of friction and the Sommerfeld number for a lubricant and given surfaces. All his test work was done on contacts that move in a single direction, unidirectional motion. This leaves the question, could Stribeck curves be applied to reciprocating contacts and how does linear velocity affect wear in these contacts? This research project is aimed to further the knowledge on how linear velocity affects reciprocating contacts with a focus on Stribeck curves and lubricity. Tests were conducted on two reciprocating instruments using ball and disk configurations. Two parameters were varied to change the linear velocity, namely oscillating frequency, and stroke length. To shift focus away from viscosity, n-Hexadecane was used as the base fluid due to its lack of lubrication properties. To improve the base fluid lubricity 3 carboxylic acids with 3 different chain lengths were used as additives. mi2026 Chemical Engineering MEng (Chemical Engineering) Restricted SDG-07: Affordable and clean energy SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production 2021-02-12T09:52:49Z 2021-02-12T09:52:49Z 2021-04 2021 Dissertation * A2021 http://hdl.handle.net/2263/78514 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Tribology Stribeck Curves Oscillating Frequency Hersey Number Friction and Wear Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Investigating the effect of linear velocity in reciprocating contacts |
| title | Investigating the effect of linear velocity in reciprocating contacts |
| title_full | Investigating the effect of linear velocity in reciprocating contacts |
| title_fullStr | Investigating the effect of linear velocity in reciprocating contacts |
| title_full_unstemmed | Investigating the effect of linear velocity in reciprocating contacts |
| title_short | Investigating the effect of linear velocity in reciprocating contacts |
| title_sort | investigating the effect of linear velocity in reciprocating contacts |
| topic | UCTD Tribology Stribeck Curves Oscillating Frequency Hersey Number Friction and Wear Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 |
| url | http://hdl.handle.net/2263/78514 |