Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading
This paper reports results of fatigue tests of friction stir welded (FSW) aluminium tubes. Relatively small 38 mm diameter tubes were used and hence an automated FSW process using a retracting tool was designed for this project, as the wall thickness of the aluminium tube was similar to the diameter...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-03-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero36/numero_36_art_12.pdf |
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| _version_ | 1841562306448719872 |
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| author | Roberto Tovo Luca Susmel M. Neil James Danie G. Hattingh Enrico Maggiolini |
| author_facet | Roberto Tovo Luca Susmel M. Neil James Danie G. Hattingh Enrico Maggiolini |
| author_sort | Roberto Tovo |
| collection | DOAJ |
| description | This paper reports results of fatigue tests of friction stir welded (FSW) aluminium tubes. Relatively small 38 mm diameter tubes were used and hence an automated FSW process using a retracting tool was designed for this project, as the wall thickness of the aluminium tube was similar to the diameter of the FSW
tool. This is a more complex joint geometry to weld than the more usual larger diameter tube reported in the literature. S-N fatigue testing was performed using load ratios of R = 0.1 and R = -1. Crack path analysis was performed using both low magnification stereo microscopy and scanning electron microscopy, in order to
identify crack initiation sites and to determine the direction of crack propagation. Work is still in progress to follow the crack path through the various microstructural zones associated with the weld. A simple statistical analysis was used to characterize the most typical crack initiation site. This work forms part of a wider project directed at determining multiaxial fatigue design rules for small diameter 6082-T6 aluminium tubes that could be
of use in the ground vehicle industry. |
| format | Article |
| id | doaj-art-48d3c0e34b4448fdb706ed3d3b323668 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2016-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-48d3c0e34b4448fdb706ed3d3b3236682025-01-03T01:02:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932016-03-01103611912910.3221/IGF-ESIS.36.12Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loadingRoberto Tovo0Luca Susmel1M. Neil James2Danie G. Hattingh3Enrico Maggiolini4University of Ferrara, ItalyUniversity of Sheffield, UKUniversity of Plymouth, UKNelson Mandela Metropolitan University, South AfricaUniversity of Ferrara, ItalyThis paper reports results of fatigue tests of friction stir welded (FSW) aluminium tubes. Relatively small 38 mm diameter tubes were used and hence an automated FSW process using a retracting tool was designed for this project, as the wall thickness of the aluminium tube was similar to the diameter of the FSW tool. This is a more complex joint geometry to weld than the more usual larger diameter tube reported in the literature. S-N fatigue testing was performed using load ratios of R = 0.1 and R = -1. Crack path analysis was performed using both low magnification stereo microscopy and scanning electron microscopy, in order to identify crack initiation sites and to determine the direction of crack propagation. Work is still in progress to follow the crack path through the various microstructural zones associated with the weld. A simple statistical analysis was used to characterize the most typical crack initiation site. This work forms part of a wider project directed at determining multiaxial fatigue design rules for small diameter 6082-T6 aluminium tubes that could be of use in the ground vehicle industry.http://www.gruppofrattura.it/pdf/rivista/numero36/numero_36_art_12.pdfFriction stir weldingRetractable toolCrack initiation sitesFatigue crack path |
| spellingShingle | Roberto Tovo Luca Susmel M. Neil James Danie G. Hattingh Enrico Maggiolini Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading Fracture and Structural Integrity Friction stir welding Retractable tool Crack initiation sites Fatigue crack path |
| title | Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading |
| title_full | Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading |
| title_fullStr | Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading |
| title_full_unstemmed | Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading |
| title_short | Crack initiation and propagation paths in small diameter FSW 6082-T6 aluminium tubes under fatigue loading |
| title_sort | crack initiation and propagation paths in small diameter fsw 6082 t6 aluminium tubes under fatigue loading |
| topic | Friction stir welding Retractable tool Crack initiation sites Fatigue crack path |
| url | http://www.gruppofrattura.it/pdf/rivista/numero36/numero_36_art_12.pdf |
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