Synchronous belts are rubber-composite materials with rubber, helical cords and facing fabrics. The helical cord is the tension member of the belt and is made of glass fibers, aramid fibers, or steel wires. Recent trends require increasingly high stiffness for the rubber belts. The use of carbon fibers and hybrid cords with carbon fibers are considered to be an effective way to achieve high stiffness for helical cords. This paper presents the study is to improve the bending fatigue strength of hybrid cords, where the center strand is made of carbon fibers, and the outer strands are made of glass fibers. The optimum cord composition for good bending fatigue durability is discussed following experimentation, mechanical analysis using a simplified mechanical model and FEM analysis. The model reasonably explained the initiation of the fatigue failure initiation site in the hybrid cords. The optimum cord composition was proposed for the bending fatigue strength basing on the simplified mechanical model. This was verified by experimental data showing good fatigue life. The use of such helical cords can considerably extend the operating life of synchronous belts.
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ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 30–September 2, 2009
San Diego, California, USA
Conference Sponsors:
- Design Engineering Division and Computers in Engineering Division
ISBN:
978-0-7918-4903-3
PROCEEDINGS PAPER
Improvement of Bending Fatigue Strength for Hybrid Cords With Carbon and Glass Fibers
Masamori Furusawa,
Masamori Furusawa
Nippon Sheet Glass Co., Ltd., Tsu, Mie, Japan
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Yuuya Tsukada,
Yuuya Tsukada
Yamagata University, Yonezawa, Yamagata, Japan
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Takuya Morimoto,
Takuya Morimoto
Yamagata University, Yonezawa, Yamagata, Japan
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Hiroshi Iizuka
Hiroshi Iizuka
Yamagata University, Yonezawa, Yamagata, Japan
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Masamori Furusawa
Nippon Sheet Glass Co., Ltd., Tsu, Mie, Japan
Yuuya Tsukada
Yamagata University, Yonezawa, Yamagata, Japan
Takuya Morimoto
Yamagata University, Yonezawa, Yamagata, Japan
Hiroshi Iizuka
Yamagata University, Yonezawa, Yamagata, Japan
Paper No:
DETC2009-86323, pp. 281-288; 8 pages
Published Online:
July 29, 2010
Citation
Furusawa, M, Tsukada, Y, Morimoto, T, & Iizuka, H. "Improvement of Bending Fatigue Strength for Hybrid Cords With Carbon and Glass Fibers." Proceedings of the ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 6: ASME Power Transmission and Gearing Conference; 3rd International Conference on Micro- and Nanosystems; 11th International Conference on Advanced Vehicle and Tire Technologies. San Diego, California, USA. August 30–September 2, 2009. pp. 281-288. ASME. https://doi.org/10.1115/DETC2009-86323
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