SciELO - Scientific Electronic Library Online

vol.17 issue2In-service welding of pipelines in high strength low thickness with emphasis on cold cracksThe influence of tool geometry and rotational speed on friction stir spot welding of aluminum alloy AA- 6181-T4 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Soldagem & Inspeção

Print version ISSN 0104-9224


OLIVEIRA, Pedro Henrique Freiria de; AMANCIO FILHO, Sergio de Traglia; SANTOS, Jorge Fernandes dos  and  HAGE JUNIOR, Elias. Feasibility study of the Friction Spot Welding (FSpW) process in thermoplastics. Soldag. insp. [online]. 2012, vol.17, n.2, pp.96-103. ISSN 0104-9224.

The modern thermoplastics show a wide range of engineering applications, mainly due to its good processability and properties, such as stress-to-weight ratio and toughness. However, the manufacturing of larger products with complex geometries require advanced polymer welding techniques. Friction Spot Welding (FSpW) is a joining technique allowing the fabrication of joint with good mechanical properties. In this work, the feasibility of the FSpW of thermoplastics was investigated in polymethyl-methacrilate (PMMA), an amorphous thermoplastic with increasing importance in the airspace and automotive industry due to its good processability, weldability, aging and chemical resistance. The welded samples were analyzed by optical microscopy and Vickers microhardness measurements and mechanically tested. Lap-shear testing showed ultimate shear resistance values of about 9,5 MPa, which were similar or higher than values obtained through current PMMA welding techniques, such as microwave welding, ultrasonic welding and thermal bonding. Therefore, the present work was able to demonstrate the potential of FSpW as an alternative welding process for thermoplastics.

Keywords : Union; Polymers; Friction; FSSW; PMMA.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License