Dissertation > Excellent graduate degree dissertation topics show

A Study on the Rotor Spinning of Wool/Acrylic Blended Fibers

Author: BaLiSong
Tutor: ChenTing
School: Donghua University
Course: Textile Engineering
Keywords: Spinning Fuzzy Clustering Analysis SPUN Yarn strength False-twist plate Regression model Irregularity Fuzzy multi-objective optimization Yarn Strength Research work
CLC: TS104.2
Type: Master's thesis
Year: 2010
Downloads: 39
Quote: 0
Read: Download Dissertation

Abstract


Since the advent of commercial open-end spinning machines using the rotor principle, there has been extensive research work on enhancing their effectiveness in terms of both yarn quality and spinning economics. This has led to a significant increase in the production speeds of the rotor machine, currently reaching upto 3-6 times that of the ring frame. However, there are still significant constraints on the yarn quality and range that can be produced on the rotor machines, this is evident in the fact that rotor spinning is limited to coarse/medium counts and the yarn strengths produced are significantly lower compared to ring spun yarns.Adaptation of raw material and spinning techniques has led to success in the rotor spinning of wool and its blends. Considerable success has been archived by the careful choice of the raw material and the optimization of the spinning elements and their settings. This research is therefore part of the various studies currently ongoing on the optimization of the machine parameters and settings for the quality production of rotor spun wool/acrylic blended yarns.The first part of this research work was aimed at the optimum selection of the rotor spinning machine elements for spinning of 55/45 Wool/Acrylic blended fibers. The machine elements under consideration were the opening roller and navel. This was done by application of a combination Fuzzy Decision Making and Fuzzy Classification Analysis. Three methods; Linear Assignment Method (LAM), The Simple Weighted Addition Method (SAW) and TOPSIS Technique were employed for decision making. Finally, fuzzy classification analysis was done. It was noted that OK 61 opening roller and Ray chrome-plated steel navel were the best for spinning of these fibers,The next part of the research dealt with the prediction, modeling and optimization of yarn quality parameters using Regression Analysis. It was discovered that high rotor speeds increase yarn irregularity and imperfections while reducing tenacity and elongation at break. On the other hand, high opening roller speeds reduce yarn irregularity and imperfection while increasing tenacity. The optimum settings for spinning 55/45 wool/acrylic fiber blends was found to be at low rotor speed, low opening roller speed and low twist factor.Prediction, modeling and optimization were also done using ANFIS and Fuzzy Multi-Objective Optimization. In prediction and modeling, most the responses were found to be best trained using Gaussian input membership functions with a linear output function. The surface diagrams generated by ANFIS did not depict a clear relationship between the inputs and outputs as expected. However, the RMSE values were low, hence good.Finally, a comparison was done between the Regression model and ANFIS model. The ANFIS model was found to have a better predictive power than the Regression model. However, the Regression model was more appealing as far as connecting the physical relationship between the inputs and outputs were concerned. It was also worthy to note that both models gave similar optimization results.

Related Dissertations

  1. Vocational colleges teaching effectiveness evaluation model analysis,G712.4
  2. Based on statistics of the lognormal distribution heteroscedasticity model inferred,O212.1
  3. Study on Preparing the High Performance Fiber and Nonaporous Fiber by High Viscosity Nylon-6,TQ342
  4. Study on Spinning of High Viscosity Polyamide-6/Rare Earth,TQ340.64
  5. Research on Spinning Performance of Collagen and PVA Composite Solution,TQ340.64
  6. Tianjin transformation of traditional industries strategic research,F426.81
  7. Institute for Defense Studies and Research Work Performance Evaluation Model,G311
  8. Modification of SEBS Rubber Via Living Radical Polymerization,TQ330.6
  9. Research on Price Forming Mechanism of Industrial Metals Futures in China,F426.3;F224
  10. Adaptive Learning Environment Behavior Associated with the Level of Learning Research Model,G434
  11. Research on the Relationship of China’s Economic Growth and Economic Structure,F124;F121
  12. Evaluation Indexes of Female Physical Aesthetics for Developing of Underwear Mannequin,TS941.17
  13. Design of Positive Draw-back Motion of Wool Spinning Frame and Comparison of Prediction Models of Worsted Yarns Performances,TP183
  14. Study on Functional Optimization of the Photocatalyst Fiber with Honeycomb-like Porous Structure and Its Fabric,TS106
  15. On Physical and Psychological Interventions of Spinning Bike on Obese Men,G872.3
  16. Research on Foreign PE Going Public,F224
  17. Research MVS yarn fabric performance,TS104
  18. Traditional silk craft Uighur Aidelaisi,J523.1
  19. Statistical analysis of the actual questionnaire based on a set of data,O212.1
  20. Multi-component fibers blended process design and quality control,TS104.5
  21. Fabrication of Biomimetic Tubular Vascular Scaffold and Inducing VSMCs Alignment,R318.08

CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > General issues > Spinning theories and spinning process > Process
© 2012 www.DissertationTopic.Net  Mobile