Title: BENCHTOP CONTINUOUS RESISTANCE WELDING OF STRUCTURAL THERMOPLASTIC COMPOSITE JOINTS

Authors: Marc Palardy-Sim, Julieta Barroeta Robles, Marc-André Octeau, Steven Roy, Ali Yousefpour

DOI: 10.33599/nasampe/s.23.0154

Abstract: The objective of this paper is to present a continuous resistance welding benchtop setup capable of performing large scale welded joints. In this process, a continuous conductive implant (e.g.: metal wire mesh) is placed between the two substrates to be welded. A mobile end-effector moves along the weld length, locally heating the conductive implant via Joule heating while compacting the joint locally throughout the melt and solidification stages of the thermoplastic material. The performance of the joint has been shown to be highly dependent on the process temperature at the weld interface; however, it cannot be measured directly during the process in a non-invasive manner (i.e., without placing thermocouples at the weld interface). Thus, additional process feedback variables that can reliably relate the weld temperature will be discussed and demonstrated as potential process control variables. This paper will demonstrate the continuous resistance welding process as a viable method for joining large thermoplastic aerospace structures.

References: 1. Aviation - new technology for the manufacture of CFRP components. 2018 January 3, 2023]; Available from: https://www.dlr.de/content/en/articles/news/2018/2/20180425_aviation-new-technology-for-the-manufacture-of-cfrp-components_26940.html. 2. Yousefpour, A. and M.-A. Octeau, Resistance welding of thermoplastics. 2009, National Research Council of Canada. 3. Endrass, M., et al. Towads Continuous Resistance Welding For Full-Scale Aerospace Components. in SAMPE Europe. 2020. Amsterdam, Netherlands. 4. Solvay, TECHNICAL DATA SHEET, APC-2, PEEK THERMOPLASTIC POLYMER PREPREG. 2011. 5. Dubé, M., et al., Metal mesh heating element size effect in resistance welding of thermoplastic composites. Journal of Composite Materials, 2012. 46(8): p. 911-919. 6. Talbot, E., et al., Optimization of thermoplastic composites resistance welding parameters based on transient heat transfer finite element modeling. Journal of Thermoplastic Composite Materials, 2013. 26(5): p. 699-717. 7. Forghani, E., et al., TOWARDS ROBUST, NON-APPLICATION SPECIFIC CONTINUOUS RESISTANCE WELDING.

Conference: SAMPE 2023

Publication Date: 2023/04/17

SKU: TP23-0000000154

Pages: 13

Price: $26.00