The analysis of reasons for defects formation in aluminum joints created using RFSSW technology

The paper describes and classifies defects in aluminum joints made using refill friction stir spot welding (RFSSW) technology, which has potential for replacing riveting as a default joining technology in aviation. Three defect groups were distinguished: at the sleeve-plunger interface, between the...

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Bibliographic Details
Published in:Manufacturing letters 2019-08, Vol.21, p.35-40
Main Authors: Adamus, Janina, Adamus, Konrad
Format: Article
Language:English
Subjects:
Aluminum alloys
Defects
Load bearing capacity
Refill friction stir spot welding
RFSSW
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Summary:The paper describes and classifies defects in aluminum joints made using refill friction stir spot welding (RFSSW) technology, which has potential for replacing riveting as a default joining technology in aviation. Three defect groups were distinguished: at the sleeve-plunger interface, between the sheets and in the joint axis. The failure modes by fracture around a weld in the top and the bottom sheets, by rupture between the sheets were presented. The progression of defects at the sleeve-plunger interface due to deteriorating process conditions was shown. The RFSSW joints were compared to the riveted joints applied in the actual airplane structures.
ISSN:2213-8463
2213-8463
DOI:10.1016/j.mfglet.2019.08.005