Energy input during friction stir spot welding

Chase D. Cox; Brian T. Gibson; Alvin M. Strauss; George E. Cook

doi:10.1016/j.jmapro.2014.05.007

Energy input during friction stir spot welding

Chase D. Cox, Brian T. Gibson, Alvin M. Strauss, George E. Cook

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Friction stir spot welding is performed on thin plates of an aluminum alloy. This paper presents the results on how the number of tool rotations affects the quality of the resulting spot weld. Different combinations of rotation rate and dwell time are investigated. A linear relationship was found to exist between the number of tool rotations completed during the spot weld and the resulting tensile shear strength. Spot welds that only completed 10 rotations were 177% stronger than those created at 50 tool rotations. The energy generated during the welding operation was quantified and also found to have a linear relationship with tensile shear strength. A modified open-loop position control system is proposed that monitors and limits the energy generated during friction stir spot welding by adjusting the dwell time.

Original language	English
Pages (from-to)	479-484
Number of pages	6
Journal	Journal of Manufacturing Processes
Volume	16
Issue number	4
DOIs	https://doi.org/10.1016/j.jmapro.2014.05.007
State	Published - Oct 2014
Externally published	Yes

Funding

Funding for this work was provided by the NASA Tennessee Space Grant Consortium NNX10AM45H .

Funders	Funder number
NASA Tennessee Space Grant Consortium	NNX10AM45H
National Aeronautics and Space Administration

Keywords

Energy
FSSW
FSW
Pinless
Spot welding

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10.1016/j.jmapro.2014.05.007

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title = "Energy input during friction stir spot welding",

abstract = "Friction stir spot welding is performed on thin plates of an aluminum alloy. This paper presents the results on how the number of tool rotations affects the quality of the resulting spot weld. Different combinations of rotation rate and dwell time are investigated. A linear relationship was found to exist between the number of tool rotations completed during the spot weld and the resulting tensile shear strength. Spot welds that only completed 10 rotations were 177% stronger than those created at 50 tool rotations. The energy generated during the welding operation was quantified and also found to have a linear relationship with tensile shear strength. A modified open-loop position control system is proposed that monitors and limits the energy generated during friction stir spot welding by adjusting the dwell time.",

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AU - Gibson, Brian T.

AU - Strauss, Alvin M.

AU - Cook, George E.

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AB - Friction stir spot welding is performed on thin plates of an aluminum alloy. This paper presents the results on how the number of tool rotations affects the quality of the resulting spot weld. Different combinations of rotation rate and dwell time are investigated. A linear relationship was found to exist between the number of tool rotations completed during the spot weld and the resulting tensile shear strength. Spot welds that only completed 10 rotations were 177% stronger than those created at 50 tool rotations. The energy generated during the welding operation was quantified and also found to have a linear relationship with tensile shear strength. A modified open-loop position control system is proposed that monitors and limits the energy generated during friction stir spot welding by adjusting the dwell time.

KW - Energy

KW - FSSW

KW - FSW

KW - Pinless

KW - Spot welding

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ER -

Energy input during friction stir spot welding

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Keywords

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