Non-destructive testing of dissimilar friction stir welds
- Akinlabi, Esther Titilayo, Levy, Adrian C. S., Akinlabi, Stephen A.
- Authors: Akinlabi, Esther Titilayo , Levy, Adrian C. S. , Akinlabi, Stephen A.
- Date: 2012
- Subjects: Friction stir welding , Non-destructive testing , Aluminum alloys , Copper
- Type: Article
- Identifier: uj:5333 , ISSN 2078-0966 , http://hdl.handle.net/10210/8876
- Description: friction stir welds between 5754 aluminium alloy and C11000 copper. The Friction stir welds of 5754 aluminium alloy and C11000 copper were produced at different tool rotational speeds and feed rates. The tool rotational speed was varied between 600 and 1200 rpm while the feed rate was varied between 50 and 300 mm/min. The visual inspection and the x-ray radiographic testing techniques were employed to conduct the tests; these tests were conducted on the welds to ascertain the joint integrity before characterization to have an idea of the quality of the welds. No visual defects were observed on all the welds considered but the x-ray radiography technique revealed the presence of wormhole defects and discontinuities in some of the welds. It was found that the welds produced at 950 rpm with varied feed rates were the best quality welds produced and this was substantiated with the microstructural evaluation of the joint interface. It was found that these welds have good mixing and metallurgical bonding at the interfaces.
- Full Text:
- Authors: Akinlabi, Esther Titilayo , Levy, Adrian C. S. , Akinlabi, Stephen A.
- Date: 2012
- Subjects: Friction stir welding , Non-destructive testing , Aluminum alloys , Copper
- Type: Article
- Identifier: uj:5333 , ISSN 2078-0966 , http://hdl.handle.net/10210/8876
- Description: friction stir welds between 5754 aluminium alloy and C11000 copper. The Friction stir welds of 5754 aluminium alloy and C11000 copper were produced at different tool rotational speeds and feed rates. The tool rotational speed was varied between 600 and 1200 rpm while the feed rate was varied between 50 and 300 mm/min. The visual inspection and the x-ray radiographic testing techniques were employed to conduct the tests; these tests were conducted on the welds to ascertain the joint integrity before characterization to have an idea of the quality of the welds. No visual defects were observed on all the welds considered but the x-ray radiography technique revealed the presence of wormhole defects and discontinuities in some of the welds. It was found that the welds produced at 950 rpm with varied feed rates were the best quality welds produced and this was substantiated with the microstructural evaluation of the joint interface. It was found that these welds have good mixing and metallurgical bonding at the interfaces.
- Full Text:
Design of a support system for a re-configured milling machine to achieve friction stir welds
- Akinlabi, Esther Titilayo, Levy, Adrian C. S., Akinlabi, Stephen A.
- Authors: Akinlabi, Esther Titilayo , Levy, Adrian C. S. , Akinlabi, Stephen A.
- Date: 2013
- Subjects: Friction Stir Welding , Friction stir welds
- Type: Article
- Identifier: uj:4830 , ISSN 2078-0966 , http://hdl.handle.net/10210/12423
- Description: The detailed design of a clamping and support system for a reconfigured milling machine to produce friction stir welds is reported in this paper. Two different concepts were considered and subjected to performance evaluation. The selected design concept is expected to effectively clamp and support the workpiece during the process of friction stir welding to achieve a good integrity.
- Full Text:
- Authors: Akinlabi, Esther Titilayo , Levy, Adrian C. S. , Akinlabi, Stephen A.
- Date: 2013
- Subjects: Friction Stir Welding , Friction stir welds
- Type: Article
- Identifier: uj:4830 , ISSN 2078-0966 , http://hdl.handle.net/10210/12423
- Description: The detailed design of a clamping and support system for a reconfigured milling machine to produce friction stir welds is reported in this paper. Two different concepts were considered and subjected to performance evaluation. The selected design concept is expected to effectively clamp and support the workpiece during the process of friction stir welding to achieve a good integrity.
- Full Text:
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