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Characterization of Microparticle Suspension Using Experimental and Image Processing Methods

Rohani, Ramtin | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45460 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hasan; Shafiee, Mohammad Behshad
  7. Abstract:
  8. Various application of polyethylene material in different industries caused to modern techniques for controlling and measuring specifications of micro-particle suspension. Many industries try to increase stability of suspensions in front of their phase separation.
    Because of the consequences of suspension homogeneity, at first, we measured this property. Then, the stability was tested by three different methods. In the first method, the transmitted laser light was measured to assay the suspensions stability. In the second, number of sediments of particles was counted. Sedimentation velocity of particles was measured directly by using a horizontal microscope as the third method. The horizontal microscope was assembled utilizing some available equipment to record movie in horizontal direction. The settling micro-particles were visible directly in the captured picture by this microscope. To perform an automatic analysis of movie and pictures, a program was written in Matlab software. This code can reports some important data like as number, diameter and velocity of particles. Also it can be applied on the movies in mini-channels to measure the velocity and diameter at the same time.
    The applied indexes to measure the stability and also the program that can process movies could be used for a wide range of particles diameter. All of the applications that were performed in this project can be employed in industries
  9. Keywords:
  10. Anemometers ; Suspension ; Stability Index ; Microparticles ; Microscopic Imaging ; Movie Process

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