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Authors: Romain G. Martin, Martin Figueiredo, Christer Johansson, Jason R. Tavares, Martine Dubé

DOI: 10.33599/nasampe/s.23.0174

Abstract: Welding techniques are emerging as a new method to join thermoplastic composite parts. They present a fast and efficient alternative to adhesives and mechanical fasteners. Induction welding is a welding technique that relies on the application of an oscillating magnetic field on the joining interface, where a material called a magnetic susceptor generates heat by interacting with the applied magnetic field. In this work, susceptors relying on magnetic hysteresis losses made of polyetherimide (PEI) and nickel (Ni) particles are investigated with varying Ni concentration. The materials are mixed using an internal mixer and pressed to form films approximately 500μm thick. To characterize the heating rates of the susceptor materials, samples are placed on an induction coil – a water-cooled copper tube in which AC current (frequency 388kHz), generates an alternating magnetic field – and the temperature evolution is measured using a thermal camera. An increasing concentration of Ni particles results in increased heating rate and maximum temperature reached by the samples. The temperature-time experimental curves are compared with theoretical heating curves to verify if the model can be used to predict the temperature evolution at the joining interface during a welding process.

References: [1] A. Yousefpour, M. Hojjati, and J.-P. Immarigeon, “Fusion Bonding/Welding of Thermoplastic Composites,” Journal of Thermoplastic Composite Materials, vol. 17, no. 4, pp. 303–341, Jul. 2004, doi: 10.1177/0892705704045187. [2] R. P. Wool, B.-L. Yuan, and O. J. McGarel, “Welding of polymer interfaces,” Polymer Engineering & Science, vol. 29, no. 19, pp. 1340–1367, 1989, doi: 10.1002/pen.760291906. [3] L. J. Bastien and J. W. Gillespie, “A non-isothermal healing model for strength and toughness of fusion bonded joints of amorphous thermoplastics,” Polymer Engineering & Science, vol. 31, no. 24, pp. 1720–1730, 1991, doi: 10.1002/pen.760312406. [4] I. F. Villegas, L. Moser, A. Yousefpour, P. Mitschang, and H. E. Bersee, “Process and performance evaluation of ultrasonic, induction and resistance welding of advanced thermoplastic composites,” Journal of Thermoplastic Composite Materials, vol. 26, no. 8, pp. 1007–1024, Sep. 2013, doi: 10.1177/0892705712456031. [5] T. Bayerl, M. Duhovic, P. Mitschang, and D. Bhattacharyya, “The heating of polymer composites by electromagnetic induction – A review,” Composites Part A: Applied Science and Manufacturing, vol. 57, pp. 27–40, Feb. 2014, doi: 10.1016/j.compositesa.2013.10.024. [6] T. J. Ahmed, D. Stavrov, H. E. N. Bersee, and A. Beukers, “Induction welding of thermoplastic composites—an overview,” Composites Part A: Applied Science and Manufacturing, vol. 37, no. 10, pp. 1638–1651, Oct. 2006, doi: 10.1016/j.compositesa.2005.10.009. [7] R. Dermanaki Farahani, M. Janier, and M. Dubé, “Conductive films of silver nanoparticles as novel susceptors for induction welding of thermoplastic composites,” Nanotechnology, vol. 29, Jan. 2018, doi: 10.1088/1361-6528/aaa93c. [8] E. D. Wetzel and B. K. Fink, “Feasibility of Magnetic Particle Films for Curie Temperature-Controlled Processing of Composite Materials,” p. 83. [9] W. Suwanwatana, S. Yarlagadda, and J. W. Gillespie, “Hysteresis heating-based induction bonding of thermoplastic composites,” Composites Science and Technology, vol. 66, no. 11, pp. 1713–1723, Sep. 2006, doi: 10.1016/j.compscitech.2005.11.009. [10] R. G. Martin, C. Johansson, J. R. Tavares, and M. Dubé, “Heating rate prediction for induction welding magnetic susceptors,” 36th Technical Conference of the American Society for Composites 2021, 2021, pp. 11–23. [11] R. Rudolf, P. Mitschang, and M. Neitzel, “Induction heating of continuous carbon-fibre-reinforced thermoplastics,” Composites Part A-applied Science and Manufacturing - COMPOS PART A-APPL SCI MANUF, vol. 31, pp. 1191–1202, Nov. 2000, doi: 10.1016/S1359-835X(00)00094-4. [12] R. G. Martin, C. Johansson, J. R. Tavares, and M. Dubé, “Material Selection Methodology for an Induction Welding Magnetic Susceptor Based on Hysteresis Losses,” Advanced Engineering Materials, vol. 24, no. 3, 2022, doi: 10.1002/adem.202100877. [13] Chas. P. Steinmetz, “On the law of hysteresis,” Proceedings of the IEEE, vol. 72, no. 2, pp. 197–221, Feb. 1984, doi: 10.1109/PROC.1984.12842. [14] F. J. G. Landgraf, M. Emura, and M. F. de Campos, “On the Steinmetz hysteresis law,” Journal of Magnetism and Magnetic Materials, vol. 320, no. 20, pp. e531–e534, Oct. 2008, doi: 10.1016/j.jmmm.2008.04.011. [15] UL Prospector, “ULTEMTM Resin 1000 - Americas,” 2018. Accessed: Dec. 05, 2022. [Online]. Available: [16] “CAMPUSplastics | datasheet ULTEMTM Resin 1010.” (accessed Dec. 05, 2022).

Conference: SAMPE 2023

Publication Date: 2023/04/17

SKU: TP23-0000000174

Pages: 16

Price: $32.00

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