Journal
JOURNAL OF MANUFACTURING PROCESSES
Volume 85, Issue -, Pages 702-712Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2022.12.001
Keywords
Ultrasonic welding; Metal; FRTP dissimilar joining; Joining mechanism; Mechanical properties; Galvanic corrosion
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With the increasing application of fiber-reinforced thermoplastic (FRTP) in the industry, researchers are focusing on metal/FRTP hybrid structures welding. Ultrasonic welding is an efficient and cost-effective method for metal/FRTP dissimilar joining. The current understanding of metal/FRTP ultrasonic welding is summarized in this paper from four aspects: welding process, joining mechanism, mechanical properties, and galvanic corrosion.
With the increasing application of fiber-reinforced thermoplastic (FRTP) in the industry, many researchers are focusing on the welding of metal/FRTP hybrid structures. Ultrasonic welding is an efficient and cost-effective method for metal/FRTP dissimilar joining. This paper summarizes the current understanding of metal/FRTP ultrasonic welding from four aspects: welding process, joining mechanism, mechanical properties, and galvanic corrosion. It shows that the physical mechanisms, especially the chemical bonding mechanism underlying ultrasonic welding of metal/FRTP are still unclear. Modeling and numerical simulation of metal/FRTP ultrasonic welding is currently lagging behind due to the lack of formulating the metal/FRTP interface interaction. Making macroscopic or microscopic grooves and protrusions on the metal surface is the main method to improve the metal/FRTP joint strength, however, the effect is unstable and quantitative analysis on these grooves and protrusions is required. Overall, the research on metal/FRTP ultrasonic welding still has a lot of space for development.
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