INFLUENCES OF AIR NOZZLE AND HEAT-CONDUCTING PLATE ON THE INDUCTION WELDING OF CF/PPS COMPOSITE

Abstract

Abstract: With the increasing use of thermoplastic composite materials in aircraft, induction welding has attracted more and more attention as the most important developing direction for the connection technologies of the future thermoplastic structure. At present, the main problem of induction welding technology is that the highest temperature surface is hard to be confined to the weld line, and it is often located near the surface closer to the coil. In this paper, the influences of air nozzle and ceramic heat-conducting plate on the induction welding process of carbon fiber reinforced polyphenylene sulfide (CF/PPS) composite was studied. The results show that the use of air nozzle and heat-conducting plate could effectively reduce the temperature of the upper surface of the laminated plate during the welding process, minimize the high temperature melting or degradation of the resin near the coil, and guarantee the shape integrity of CF/PPS welding joint. In addition, the feasibility of induction welding of CF/PPS laminates made of unidirectional prepreg was studied. The results show that the CF/PPS laminates with alternating layers of 0° and 90° can be induction welded at low frequencies and high power due to the existence of alternating current circuits inside.

Key words: induction welding, carbon fiber, polyphenylene sulfide, thermoplastic composites, lap shear strength

CLC Number:

TB332

QIAN Ying, WANG Jia-feng,SONG Yu-nuo, ZHU Shu. INFLUENCES OF AIR NOZZLE AND HEAT-CONDUCTING PLATE ON THE INDUCTION WELDING OF CF/PPS COMPOSITE[J]. Composites Science and Engineering, 2020, 0(10): 39-46.

References

[1] 袁协尧, 杨洋, 见雪珍, 等. 感应焊接技术在民用飞机热塑性复合材料中的应用[J]. 玻璃钢/复合材料, 2017(5): 99-104.
[2] 董雨达, 陈宏章. 高性能热塑性复合材料在航空航天工业中的应用[J]. 玻璃钢/复合材料, 1993(1): 29-34, 41.
[3] 陈祥宝, 张宝艳, 邢丽英. 先进树脂基复合材料技术发展及应用现状[J]. 中国材料进展, 2009, 28(6): 2-12.
[4] 杨洋, 见雪珍, 袁协尧, 等. 先进热塑性复合材料在大型客机结构零件领域的应用及其制造技术[J]. 玻璃钢, 2017(4): 1-15.
[5] COSTA A P, BOTELHO E C, COSTA M L, et al. A review of welding technologies for thermoplastic composites in aerospace applications[J]. Journal of Aerospace Technology and Management, 2012, 4(3): 255-265.
[6] FLANAGAN M, DOYLE A, DOYLE K, et al. Comparative manufacture and testing of induction-welded and adhesively bonded carbon fibre PEEK stiffened panels[J]. Journal of Thermoplastic Composite Materials, 2019, 32(12): 1622-1649.
[7] MURRAY R E, ROADMAN J, BEACH R. Fusion joining of thermoplastic composite wind turbine blades: Lap-shear bond characterization[J]. Renewable Energy, 2019, 140: 501-512.
[8] MITSCHANG P, RUDOLF R, NEITZEL M. Continuous induction welding process, modelling and realisation[J]. Journal of Thermoplastic Composite Materials, 2002, 15(2): 127-153.
[9] BAYERL T, DUHOVIC M, MITSCHANG P, et al. The heating of polymer composites by electromagnetic induction-a review[J]. Composites Part A: Applied Science and Manufacturing, 2014, 57: 27-40.
[10] FORINTOS N, CZIGANY T. Multifunctional application of carbon fiber reinforced polymer composites: Electrical properties of the reinforcing carbon fibers-A short review[J]. Composites Part B-Engineering, 2019, 162: 331-343.
[11] RUDOLF R, MITSCHANG P, NEITZEL M. Induction heating of continuous carbon-fibre-reinforced thermoplastics[J]. Composites Part A: Applied Science and Manufacturing, 2000, 31(11): 1191-1202.
[12] VILLEGAS IF, MOSER L, YOUSEFPOUR A, et al. Process and performance evaluation of ultrasonic, induction and resistance welding of advanced thermoplastic composites[J]. Journal of Thermoplastic Composite Materials, 2013, 26(8): 1007-1024.
[13] PAPPADÀ S, SALOMI A, MONTANARO J, et al. Fabrication of a thermoplastic matrix composite stiffened panel by induction welding[J]. Aerospace Science and Technology, 2015, 43: 314-320.
[14] STOKES V K. Experiments on the induction welding of thermoplastics[J]. Polymer Engineering and Science, 2003, 43(9): 1523-
1541.
[15] YARLAGADDA S, KIM H J, JOHN J, et al. A study on the induction heating of conductive fiber reinforced composites[J]. Journal of Composite Materials, 2002, 36(4): 401-421.