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3D Computer vision contact patch measurements inside off-road vehicle tyres
Dissertation (MEng)--University of Pretoria, 2016.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2016
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| _version_ | 1867613676306956288 |
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| access_status_str | Open Access |
| author2 | Els, P.S. (Pieter Schalk) |
| author_browse | Els, P.S. (Pieter Schalk) |
| author_facet | Els, P.S. (Pieter Schalk) |
| collection | Thesis |
| dc_rights_str_mv | © 2016 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)--University of Pretoria, 2016. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/56080 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:56.028Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| 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:2263/56080 3D Computer vision contact patch measurements inside off-road vehicle tyres Els, P.S. (Pieter Schalk) u28122781@tuks.co.za Guthrie, Glenn UCTD 3D computer vision Contact patch measurements Off-road vehicle tyres Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production Dissertation (MEng)--University of Pretoria, 2016. The interaction between tyres and terrain is one of the most studied areas in the vehicle dynamics and terramechanics research communities because it is the only region where excitation forces act on the vehicle if aerodynamics is not considered. The tyre area which deforms against the ground is called the contact patch. Measuring the contact patch has been accomplished statically in the past; however, measurement while a wheel rotates has proven difficult. A number of attempts to measure carcass deformation from inside the tyre have succeeded in measuring small areas or single points but full field measurement has never been attempted. This study describes the design and testing of a system which uses stereo cameras and image correspondence to measure the deformation of the inside of the tyre carcass in the contact region completely. The system includes a stabilisation mechanism which prevents the cameras from rotating, ensuring that the cameras view the inside of the contact region at all times. Software to capture and process the images captured is developed and tested to ensure measurement accuracy. The 3D results produced by the software are compared to one another where possible and any trends or problems are discussed. Results indicate that the full 3D displacement field in the contact region can be measured accurately. The information produced is expected to be extremely valuable for development and validation of tyre and vehicle dynamics models. tm2016 mi2025 Mechanical and Aeronautical Engineering MEng Unrestricted SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production 2016-07-29T11:01:52Z 2016-07-29T11:01:52Z 2016-04-15 2016 Dissertation Guthrie, G 2016, 3D Computer vision contact patch measurements inside off-road vehicle tyres, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/56080> A2016 http://hdl.handle.net/2263/56080 en © 2016 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 3D computer vision Contact patch measurements Off-road vehicle tyres Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title | 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title_full | 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title_fullStr | 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title_full_unstemmed | 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title_short | 3D Computer vision contact patch measurements inside off-road vehicle tyres |
| title_sort | 3d computer vision contact patch measurements inside off road vehicle tyres |
| topic | UCTD 3D computer vision Contact patch measurements Off-road vehicle tyres Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production |
| url | http://hdl.handle.net/2263/56080 |