On the sensitivity of the ultrasonic welding process of epoxy- to polyetheretherketone (PEEK)-based composites to the welding force and amplitude of vibrations

Composites Part C: Open Access

Sofia Teixeira de Freitas¹  Irene Fernandez Villegas²  Rinze Benedictus²  Eirini Tsiangou³ 

[1] Aerospace Structures and Materials Department, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, the Netherlands;Aerospace Structures and Materials Department, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, the Netherlands;Corresponding author.;

关键词: Polymer-matrix composites (PMCs);    Thermoplastic resin;    Thermosetting resin;    Joints/joining;    Ultrasonic welding;   

DOI  :  

来源: DOAJ

【 摘 要 】

This paper addresses the sensitivity of the ultrasonic welding process for joining dissimilar composites to variations in either the welding force or amplitude of vibrations. For that, carbon fibre (CF)/epoxy specimens were welded to CF/polyetheretherketone (PEEK) specimens, through a polyetheretherimide (PEI) coupling layer co-cured with the CF/epoxy material. It was found that reducing either the welding force or the amplitude of vibrations caused an increase in the heating time and maximum temperatures between the coupling layer and CF/epoxy adherend. In addition, local signs of thermal degradation were found in the CF/epoxy adherend even at welding conditions that resulted in the highest strength. However, such alterations were not significant enough to have an apparent effect on the maximum lap shear strength of the welded joints.

【 授权许可】

Unknown