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| Study on the Bending Fatigue Behavior of Single Aramid Fibers by a Novel Bending Fatigue Test Method |
| Guangming Cai, Wenfang Song, Xin Cui, Weidong Yu |
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Abstract In this paper, we report a bending fatigue testing apparatus which can test the bending fatigue resistance of single Kevlar 49 fiber by setting the pretension and bending angle. The cyclic tension and the (number of cyclic bending of fiber) were recorded by this apparatus. The cyclic tension curve showed that the tension changes in periods during the bending fatigue process. The cyclic tension was theoretically analyzed and found that the bending angle had significant effect on the cyclic tension. The cyclic bending number N of Kevlar 49 fiber was plotted as a function of pretension S using S-N curves, which shows that the bending angle and pretension have a significant effect on the fatigue lifetime of a fiber. The bending fatigue morphologies of Kevlar 49 fiber explained the bending failure mechanism of the Kevlar 49 fibers.
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| Cite this article: |
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Guangming Cai,Wenfang Song,Xin Cui, et al. Study on the Bending Fatigue Behavior of Single Aramid Fibers by a Novel Bending Fatigue Test Method[J]. Journal of Fiber Bioengineering and Informatics, 2014, 7(1): 13-22.
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[1] Hearle, JWS. High Performance Fibers
[M]. WoodheadPub, 2011: 1-2.
[2] Christophe LC, Monasse B and Bunsell AR. Influence of temperature on fracture initiation in PET and PA66 fibres under cyclic loading
[J]. Journal of Materials Science. 2007; 42: 9276-9283.
[3] Davies P and Bunsell AR. Tensile fatigue behaviour of PBO fibres
[J]. Journal of Materials Science. 2010; 45: 6395-6400.
[4] Herrera JM, Ramirez AR and Bunsell AR. Microstructural mechanisms governing the fatigue failure of polyamide 66 fibres
[J]. Journal of materials science. 2006; 41: 7261-7271.
[5] Konopasek L and Hearle JWS. The tensile fatigue behavior of aramid fibers and their fracture morphology
[J]. Journal of Applied Polymer Science 1997; 21: 2791-2815.
[6] Hearle JWS. Fatigue failure of textile fibres
[M]. WoodheadPub, 2011: 34-52.
[7] Liu XY, Yu WD. Bending fatigue properties of single aramid fibers. In: Chemical Fibers Interna-tional 2004; 54: 173.
[8] C.J.Burgoyne, R.E. Hobbs and J. Strzemiecki, 8th Int Conf on Offshore Mechanics and Arctic Engineering, pp.691-698, The Hague, 1989.
[9] Kazuto T, Kohji M, Takahiro O and Kenjiro K.Influences of stress waveform and wet environment on fatigue fracture behavior of aramid single fiber
[J]. Composites Science and Technology. 2004; 64: 1531-1537.
[10] Kohji M,Yoshihiro M and Kenjiro K. The influence of vacuum on fracture and fatigue behavior in a single aramid fiber
[J]. International Journal of Fatigue. 2000; 22: 757-765.
[11] Cai GM,Wang XG, Shi XJ and Yu WD. Evaluation of fatigue properties of high performance fibers based on fixed-point bending fatigue test
[J]. Journal of Composite Materials. 2012; 7: 831-840.
[12] Cai GM, Yu WD. Characterization for bending fatigue properties of PBO fiber
[J]. Industria Textila. 2010; 4: 163-167.
[13] Yu WD, Du ZQ and Cai GM. A microscale positioning device of single fiber bending fatigue: China patent No.10304650, 2011. |
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2014, Vol. 7 
