›› 2009, Vol. 30 ›› Issue (9): 2783-2786.

• Geotechnical Engineering • Previous Articles     Next Articles

Comparison of several optical measurement methods applied to measure displacement of test model

BAI Yi-ru   

  1. Key laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China
  • Received:2008-10-16 Online:2009-09-10 Published:2010-03-24

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Abstract:

Several optical measurement methods applied to measure displacement of model are discussed. For automated grid method, grid dots are arranged easily on model surface. After improving the program, dots can be encoded automatically in the condition of removing dots, and can be encoded handily by human-computer dialogue if necessary. For speckle correlation method, speckle is arranged easily on model surface. After improving the program, displacement can be acquired automatically in the condition of removing speckle. Displacement cannot be acquired if speckle is destroyed badly. Other optical methods are not suitable for experiment conditions.

Key words: model test, optical measurement, automated grid method, speckle correlation method

CLC Number: 

  • TU 458+.4
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