The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys
Plain-fatigue and fretting-fatigue tests have been carried out on the two peak-aged, high-strength aluminium alloys, 7010 and 8090, in the unpeened and shot peened conditions. Shot peening produced a highly deformed surface containing many deep dimples and folds from which fatigue cracks rapidly in...
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
| Published: |
1988
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| Online Access: | https://eprints.nottingham.ac.uk/12723/ |
| _version_ | 1848791567823798272 |
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| author | Fair, G.H. |
| author_facet | Fair, G.H. |
| author_sort | Fair, G.H. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Plain-fatigue and fretting-fatigue tests have been carried out on the two peak-aged, high-strength aluminium alloys, 7010 and 8090, in the unpeened and shot peened conditions.
Shot peening produced a highly deformed surface containing many deep dimples and folds from which fatigue cracks rapidly initiated. Although initiation was early, propagation through the peened surface layers was retarded by the residual compressive stresses introduced by the peening treatment; this retardation being greatest at a depth corresponding to that of the peak residual compressive stress.
Shot peening improved the plain-fatigue properties of the 7010 alloy at high applied stresses and this improvement decreased as the applied stress was reduced. A reversed trend was observed in the 8090 alloy with shot peening being beneficial to the fatigue properties at low applied stresses and detrimental at high applied stresses.
The poor resistance of the 7010 alloy to fretting-fatigue was eliminated by shot peening and this was again attributed to the residual compressive stress induced by the peening treatment. Since the 8090 alloy in the unpeened condition is relatively insensitive to the effects of fretting, shot peening resulted in only a minor improvement in the fretting-fatigue behaviour of this alloy. |
| first_indexed | 2025-11-14T18:30:34Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-12723 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T18:30:34Z |
| publishDate | 1988 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-127232025-02-28T11:21:01Z https://eprints.nottingham.ac.uk/12723/ The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys Fair, G.H. Plain-fatigue and fretting-fatigue tests have been carried out on the two peak-aged, high-strength aluminium alloys, 7010 and 8090, in the unpeened and shot peened conditions. Shot peening produced a highly deformed surface containing many deep dimples and folds from which fatigue cracks rapidly initiated. Although initiation was early, propagation through the peened surface layers was retarded by the residual compressive stresses introduced by the peening treatment; this retardation being greatest at a depth corresponding to that of the peak residual compressive stress. Shot peening improved the plain-fatigue properties of the 7010 alloy at high applied stresses and this improvement decreased as the applied stress was reduced. A reversed trend was observed in the 8090 alloy with shot peening being beneficial to the fatigue properties at low applied stresses and detrimental at high applied stresses. The poor resistance of the 7010 alloy to fretting-fatigue was eliminated by shot peening and this was again attributed to the residual compressive stress induced by the peening treatment. Since the 8090 alloy in the unpeened condition is relatively insensitive to the effects of fretting, shot peening resulted in only a minor improvement in the fretting-fatigue behaviour of this alloy. 1988 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en arr https://eprints.nottingham.ac.uk/12723/1/384688.pdf Fair, G.H. (1988) The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys. PhD thesis, University of Nottingham. Shot peening aluminium alloys fatigue testing |
| spellingShingle | Shot peening aluminium alloys fatigue testing Fair, G.H. The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title | The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title_full | The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title_fullStr | The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title_full_unstemmed | The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title_short | The effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| title_sort | effect of shot peening on fatigue and fretting-fatigue of aluminium alloys |
| topic | Shot peening aluminium alloys fatigue testing |
| url | https://eprints.nottingham.ac.uk/12723/ |