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Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending
Dissertation (MEng (Metallurgical Engineering))--University of Pretoria, 2007.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613510668648448 |
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| access_status_str | Open Access |
| author2 | Van Rooyen, Gerrit T. |
| author_browse | Van Rooyen, Gerrit T. |
| author_facet | Van Rooyen, Gerrit T. |
| collection | Thesis |
| dc_rights_str_mv | © University of Pretor |
| description | Dissertation (MEng (Metallurgical Engineering))--University of Pretoria, 2007. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/30429 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:18.025Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| 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:2263/30429 Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending Van Rooyen, Gerrit T. ulyate.curle@up.ac.za Curle, Ulyate Andries Crack closure Envorinment Near-threshold crack propagation Steam Oxide-induced Rotating bending fatigue UCTD Dissertation (MEng (Metallurgical Engineering))--University of Pretoria, 2007. The influences of a superheated steam environment and temperature on the nearthreshold crack growth behaviour of mild steel during rotating bending fatigue were investigated. A fatigue machine in which rotating bending is simulated was designed and built to allow continuous crack growth measurement. Experiments compared the threshold stress intensities (∆Kth ) for air at 24 °C, air at 160 °C and steam at 160 °C.Air at 160 °C yielded the lowest threshold stress intensity in both cases. Oxide thicknesses in the vicinity of the threshold were estimated from temper colours. The difference in threshold stress intensities can be explained by the concept of oxideinduced crack closure. Materials Science and Metallurgical Engineering MEng unrestricted 2013-09-07T19:01:39Z 2007-12-19 2013-09-07T19:01:39Z 2007-04-24 2007-12-19 2007-12-19 Dissertation Curle, UA 2007, Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/30429> Pretoria http://hdl.handle.net/2263/30429 http://upetd.up.ac.za/thesis/available/etd-12192007-150550/ © University of Pretor application/pdf University of Pretoria |
| spellingShingle | Crack closure Envorinment Near-threshold crack propagation Steam Oxide-induced Rotating bending fatigue UCTD Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title | Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title_full | Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title_fullStr | Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title_full_unstemmed | Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title_short | Near-threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| title_sort | near threshold fatigue crack growth behaviour of mild steel in steam during rotating bending |
| topic | Crack closure Envorinment Near-threshold crack propagation Steam Oxide-induced Rotating bending fatigue UCTD |
| url | http://hdl.handle.net/2263/30429 http://upetd.up.ac.za/thesis/available/etd-12192007-150550/ |