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The in-service non-destructive evaluation of wooden transmission line poles
This thesis covers the research undertaken on behalf of the ESKOM TRI Group into the In-service Non-Destructive Evaluation of Wooden Transmission Line Poles. The aim of this work was the development of an effective pole tester that could be used to test the integrity of wooden transmission line pole...
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| Format: | Thesis |
| Language: | English |
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Department of Mechanical Engineering
2016
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| _version_ | 1867613221536399360 |
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| access_status_str | Open Access |
| author | Prestage, Brendan Paul |
| author2 | Gryzagoridis, Jasson |
| author_browse | Gryzagoridis, Jasson Prestage, Brendan Paul |
| author_facet | Gryzagoridis, Jasson Prestage, Brendan Paul |
| author_sort | Prestage, Brendan Paul |
| collection | Thesis |
| description | This thesis covers the research undertaken on behalf of the ESKOM TRI Group into the In-service Non-Destructive Evaluation of Wooden Transmission Line Poles. The aim of this work was the development of an effective pole tester that could be used to test the integrity of wooden transmission line poles in situ. The pole testing method that ESKOM uses at present is both time and labour intensive and it is envisaged that this research will contribute to the establishment of a faster, cheaper and more effective alternative. The research began with a literature survey of past investigations. Previous research in this area followed two distinct approaches. The first approach concentrated on mechanical testing procedures. For example the physical bending of the pole and measuring its bending stress (the effect that this bending has on the single fibres in the pole is not documented). The present ESKOM pole tester follows this approach. The second approach has been in the field of true "non-destructive" testing. Procedures using x-rays, magnetic resonance imaging and vibration analysis have all been considered in the past by investigators. The present investigation followed the approach of vibrations analysis. The process involved impacting the pole and measuring its vibration response. The response was then used to analyse the pole's behaviour. The state of integrity of the pole determined its vibration characteristics. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21340 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:41.376Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Mechanical Engineering |
| publisherStr | Department of Mechanical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21340 The in-service non-destructive evaluation of wooden transmission line poles Prestage, Brendan Paul Gryzagoridis, Jasson Mechanical Engineering This thesis covers the research undertaken on behalf of the ESKOM TRI Group into the In-service Non-Destructive Evaluation of Wooden Transmission Line Poles. The aim of this work was the development of an effective pole tester that could be used to test the integrity of wooden transmission line poles in situ. The pole testing method that ESKOM uses at present is both time and labour intensive and it is envisaged that this research will contribute to the establishment of a faster, cheaper and more effective alternative. The research began with a literature survey of past investigations. Previous research in this area followed two distinct approaches. The first approach concentrated on mechanical testing procedures. For example the physical bending of the pole and measuring its bending stress (the effect that this bending has on the single fibres in the pole is not documented). The present ESKOM pole tester follows this approach. The second approach has been in the field of true "non-destructive" testing. Procedures using x-rays, magnetic resonance imaging and vibration analysis have all been considered in the past by investigators. The present investigation followed the approach of vibrations analysis. The process involved impacting the pole and measuring its vibration response. The response was then used to analyse the pole's behaviour. The state of integrity of the pole determined its vibration characteristics. 2016-08-18T13:55:00Z 2016-08-18T13:55:00Z 1998 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/21340 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Mechanical Engineering Prestage, Brendan Paul The in-service non-destructive evaluation of wooden transmission line poles |
| thesis_degree_str | Master's |
| title | The in-service non-destructive evaluation of wooden transmission line poles |
| title_full | The in-service non-destructive evaluation of wooden transmission line poles |
| title_fullStr | The in-service non-destructive evaluation of wooden transmission line poles |
| title_full_unstemmed | The in-service non-destructive evaluation of wooden transmission line poles |
| title_short | The in-service non-destructive evaluation of wooden transmission line poles |
| title_sort | in service non destructive evaluation of wooden transmission line poles |
| topic | Mechanical Engineering |
| url | http://hdl.handle.net/11427/21340 |
| work_keys_str_mv | AT prestagebrendanpaul theinservicenondestructiveevaluationofwoodentransmissionlinepoles AT prestagebrendanpaul inservicenondestructiveevaluationofwoodentransmissionlinepoles |