Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Experimental Identification of the Thickness Dynamics in Friction Spinning

마찰 정방에서 굵기 동역학의 실험적 확인

  • Lim, Jung-H. (Department of Textile Engineering, Graduate School, Kyung Hee University) ;
  • Kim, Jong-S. (Laboratory for Intelligent Process and Control, Kyung Hee University) ;
  • Huh, You (Department of Mechanical Engineering, College of Engineering, Kyung Hee University)
  • 임정호 (경희대학교 대학원 섬유공학과) ;
  • 김종성 (경희대학교 지능공정 및 제어 연구실) ;
  • 허유 (경희대학교 공과대학 기계공학과)
  • Received : 2011.04.05
  • Accepted : 2011.10.21
  • Published : 2011.10.28
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Abstract

Dynamics of the bundle thickness in a friction yarn formation process was ascertained experimentally from the view point of the thickness of in-process bundle and output bundle. By changing the thickness of input fleece the thickness distribution of the in-process bundle on the friction drum and the irregularity of the output bundle in a steady state were measured. The experimental results were then compared with the simulation results derived on the basis of the dynamic model, while a step signal and a sinusoidal signal were applied. Experimental results turned out to be in a good agreement with the simulation result, which indicates that the theoretical model describes the dynamics of the frictional bundling process very good. The cross-sectional area of the in-process bundle increased linearly to the drum position in response to a step change in the input fleece thickness, which indicates that the friction bundling process can be though of as an integrating system with an interval. The periodic change in the input fleece thickness yielded also a good correspondence of the experimental results with those from the simulation. However, the thickness behavior of the output friction yarn for the periodic change in input fleece thickness demonstrated the dependency on the take-up speed of the output bundle.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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