Print Email Facebook Twitter On improving process efficiency and weld quality in ultrasonic welding of misaligned thermoplastic composite adherends Title On improving process efficiency and weld quality in ultrasonic welding of misaligned thermoplastic composite adherends Author Belo Gomes Brito, C. (TU Delft Aerospace Manufacturing Technologies) Teuwen, Julie J.E. (TU Delft Aerospace Manufacturing Technologies) Dransfeld, C.A. (TU Delft Aerospace Manufacturing Technologies) Villegas, I.F. (TU Delft Aerospace Structures & Computational Mechanics; TU Delft Design for Sustainability) Date 2023 Abstract This paper evaluates the potential of changing the welding force and the compliance of the energy director (ED) to reduce the effects caused by misaligned adherends, which were: increased through-thickness heating, reduced size of welded area and increased heating time. In the methodology that was followed, we welded adherends misaligned by approximately 4.5° in different scenarios: with higher welding force; with increased ED compliance by the use of a thicker ED and; with increased ED compliance by the use of a discontinuous ED. The most significant reduction of the effects caused by misaligned adherends was obtained when combining the use of both increased welding force and discontinuous ED. Such improvement derives from the imposed parallelism caused by the use of a higher welding force and from a more efficient concentration of heat generation at the weld line that occurs when a discontinuous ED is used. Subject Carbon fibreEnergy directorFusion bondingJoints/joiningPorosityWelding force To reference this document use: http://resolver.tudelft.nl/uuid:e1ca6d19-64b1-485d-9035-0c814857934b DOI https://doi.org/10.1016/j.compstruct.2022.116342 ISSN 0263-8223 Source Composite Structures, 304 Part of collection Institutional Repository Document type journal article Rights © 2023 C. Belo Gomes Brito, Julie J.E. Teuwen, C.A. Dransfeld, I.F. Villegas Files PDF 1_s2.0_S0263822322010741_main.pdf 17.18 MB Close viewer /islandora/object/uuid:e1ca6d19-64b1-485d-9035-0c814857934b/datastream/OBJ/view