Dissertation > Excellent graduate degree dissertation topics show

Speckle Pattern Interferometry for Deformation Measurement

Author: DongHui
Tutor: WangWenSheng
School: Changchun University of Science and Technology
Course: Optical Engineering
Keywords: speckle pattern interferometry interference pattern deformation digital image processing
CLC: O439
Type: Master's thesis
Year: 2011
Downloads: 87
Quote: 0
Read: Download Dissertation

Abstract


Speckle pattern interferometry is a nondestructive, full-field optical measurement technology of measuring optical rough surface. It developed based on speckle technology, laser interference technology, electronic technology, precision testing technology and computer image processing technology.The technology of measuring displacement and deformation based on principle of speckle pattern interferometry is studied in this paper. The speckle patterns are obtained in two ways of Fresnel speckle method and image plane speckle method. Two patterns of speckle interference field before and after deformation are recorded by CCD camera and stored in computer. After subtracting and taking the absolute value, the correlative fringe pattern including object’s deformation information is acquired.Some often used filtering methods to the electronic speckle pattern based on MATLAB are investigated in the paper. The speckle pattern is processed in spatial domain and frequency domain and the obvious results are given. Compared with the results, synthesized filter is proposed in the paper. The contrast of interference pattern is increased and high SNR of the speckle fringe pattern is realized.At last, proposing scanning central row method. From the one dimension phase distribution of central row, one dimension deformation is obtained and interference fringes interpreter is automatically realized.

Related Dissertations

  1. Rock-fill Concrete Experiments on Comprehensive Properties and Studies on Thermal Stress,TU528
  2. The Research of Technology for 3D Fashion Virtual Distortion and Display,TS941.26
  3. Solid Oxide Fuel Cell ferrite connect the material properties of,TM911.4
  4. The Influence on the Dimensional Stability and Elastic Deformation Caused by Two Types of Disinfectant Solution to Different Impression Material,R783
  5. Based on Laser Ranging Bunton Displacement Monitoring System Design and Application,TN247
  6. With shape memory alloy (SMA) fiber composite box driven nonlinear deformation of thin-walled beams,TB33
  7. The Construction Monitoring and Deformation Control and Analysis of the Box Culvert Jacking of the YouQuan Road Through the Hukun Railway,U449.5
  8. Study on Construction Deformation Characteristic of Deep Foundation Pit of a Tunnel Working Well,TU753
  9. Nonlinear Structural Dynamics Analysis of Naval Gun Extractor Systems,TJ391
  10. The Research of Buildings Damaged Evaluation Model for Surface Movement,TU746.1
  11. The Deformation Law and Its Influnecing Factors of Iron-based Valve Plate in Sintering Process,TF124.5
  12. Study on the Buildings Deformation Around Expansive Soil Foundation Pit,TU443
  13. Research on Characteristics of an Equipment’s Slewing Bearing System in Underwater Pressure Environment,TJ6
  14. A Digitalized Apparel Customization System for Special Shape,TP391.72
  15. 6R industrial robot joint stiffness identification and experimental study,TP242.2
  16. Laser bending method for suppressing undesired deformation,TG665
  17. Improve vehicle missile launchers deformation Method of measurement accuracy,TJ768.21
  18. Building geometry and discrete spline modeling technology research,TU17
  19. Modeling Theory and Experiment Research for Flexible Multibody System with Large Deformation,TB122
  20. The facial expression based 3DMM Transplant Research,TP391.41
  21. Elements Re nickel base single crystal alloy temperature creep behavior of,TG146.15

CLC: > Mathematical sciences and chemical > Physics > Optics > Applied Optics
© 2012 www.DissertationTopic.Net  Mobile