Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Development of Digital Holographic Microscopy System for Measurements of Particle Velocities in MR Fluids

MR 유체 입자 속도 계측을 위한 디지털 홀로그래피 현미경 시스템의 개발

  • ;
  • 강보선 (전남대학교 기계공학부)
  • Received : 2016.04.09
  • Accepted : 2016.05.23
  • Published : 2016.06.30
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Abstract

In this study digital holographic microscopy system for measurements of 3-D velocities of particles in MR fluid is developed. Holograms are recorded using either a CCD camera with a double pulse laser or a high-speed camera with a continuous laser. To process recorded holograms, the correlation coefficient method is used for focal plane determination of particles. To remove noise and improve the quality of holograms and reconstructed images, a Wiener filter is adopted. The two-threshold and image segmentation methods are used for binary image transformation. For particle pairing, the match probability method is adopted. The developed system will be applied to measurements of the characteristics of unsteady 3-D particle velocities in MR fluids through the next stage of this study.

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References

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