Title: Development of High Cycle Rivet Fastening Process by Servo Press Machine Using Unidirectional CFRTP Rivet

Authors: Eguchi Takeshi, Daiki Tanabe, Kazuaki Nishiyabu

DOI: 10.33599/nasampe/s.21.0592

Abstract: This study aims to develop unidirectional carbon fiber reinforced thermoplastic (UD-CFRTP) rivet fastening process using a servo press machine and infrared or another heating method. To realized compact and lightweight portable UD-CFRTP rivet fastening system using servo press machine. The materials used for experiment were unidirectional carbon fiber reinforced polyamide6 (UD-CF/PA6) rod for rivet fastener. The effects of heating method, forming load and holding time on fastening process were investigated. The contents for evaluation are heating distribution of UD-CFRTP rivet, pressure loading behavior, cross-sectional observation after joining, tensile shear strength test and pull through strength test. The tensile shear strength and the pull through strength were compared by CFRTP rivet, aluminum rivet and epoxy adhesive. The tensile shear strength of the UD-CFRTP rivet was 200MPa, which was higher than the other joints. In the case of UD-CFRTP rivet specimen, the strength was increased significantly compared to other fastening and bonding because unidirectional carbon fiber was located continuously within the matrix polymer. The structure where the rivet head and body are united with continuous fibers showed sufficient strength. The high availability of UD-CFRTP rivet as mechanical fastener was shown from these results.

References: [1] C. Callens and F. Bordellier, QSP®: How to Produce a Netshape Thermoplastic Composite Part in One Minute, Proceedings of 3rd International Conference and Exhibition on Thermoplastic Composites (ITHEC2016), (2016): A-3,p.24-27. [2] F.J.C. Fischer, M. Beyrle, M. Endraß, L. Häberle, T. Stefani, M. Gutschon, P. Gänswürger, G.Braun and M. Kupke, “Automated Production of Carbon Fiber Reinforced Thermoplastic Sine Wave Beams”, Proceedings of 17th European Conference on Composite Materials,(2016): MON-1_STG_5.09-02. [3] A. Pramanik, A.K. Basak, Y. Dong, P.K. Sarker, M.S. Uddin, G. Littlefair, A.R. Dixit, S. Chattopadhyaya, “Joining of carbon fibre reinforced polymer (CFRP) composites and aluminium alloys – A review”, Composites Part A, (2017): Vol.101,pp.1-29. [4] Shengxi Li, Haris, Ali Khan Lloyd H.Hiharac, Hongbo Conga, Jingjing Li, “Corrosion behavior of friction stir blind riveted Al/CFRP and Mg/CFRP joints exposed to a marine environment”, Corrosion Science, (2018): Volume 132,Pages 300-309. [5] Masahito Ueda, Naoya Ui, Akio Ohtani, “Lightweight and anti-corrosive fiber reinforced thermoplastic rivet”, Composite Structures, (2018): 188, 356–362. [6] Laberge Lebel, L. and V. Fortier, Apparatus and methods for installing composite rivets, PCT/IB2018/051448, filed on March 9, 2017. [7] C. Absi, N. Alsinani, P. Assi, A. Bureau, S. Dupont, E. Dimas and L. Laberge Lebel, “Carbon fiber / polyether ether ketone rivets for fastening composite structures”, Proceedings of twenty-second international conference on composite materials (ICCM22), 2019. [8] NASM 1312-8, “Fastener Test Methods, Method 8, Tensile Strength,” Aerospace Industries Assn. (Washington, D.C.), 2011.

Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000592

Pages: 13

Price: FREE