Friction spot welding of carbon fiber-reinforced polyamide 66 laminate

Journal
Materials Letters  
Volume
159
Start Page
506
End Page
509
Citation
Materials Letters 159: 506-509 (2015-11-15)
Publisher DOI
10.1016/j.matlet.2015.08.036
Scopus ID
2-s2.0-84942848586
Publisher
Elsevier
Friction spot welding (FSpW) is an innovative technique developed by the Helmholtz Zentrum Geesthacht (WO/2001/036144). FSpW uses the friction between a rotating tool and workpieces to generate enough heat to cause macromolecular interdiffusion across the interface of the joining partners to create the weld. In this work, the feasibility of FSpW on carbon fiber-reinforced polyamide 66 laminate (CF-PA66) was evaluated through lap shear testing and optical microscopy. CF-PA66 welds with good surface finishing, an absence of degradation flaws and an average lap-shear strength of 26.8±0.8 MPa were achieved. These welds have comparable mechanical performance to state-of-the-art ultrasonic welds, which indicates the potential of the FSpW process for fiber-reinforced polymer composites.
Subjects
Carbon fiber-reinforced composites
Friction spot welding
Polymeric composites
Welding
DDC Class
600: Technik
Funding Organisations
Helmholtz-Zentrum Hereon  
More Funding Information
The authors would like to acknowledge the financial support of the Helmholtz Association (Grant no. VH-NG-626 ), CAPES-Brazil for the scholarship awarded to J. Gonçalves and CNPq-Brazil for the grant awarded to L.B. Canto (Process #304169/2014-5 ).