Measurement of in-plane displacement by wavelength-modulated heterodyne speckle interferometry

2012 ◽  
Vol 51 (8) ◽  
pp. 1095 ◽  
Author(s):  
Ju-Yi Lee ◽  
Ming-Pei Lu ◽  
Kun-Yi Lin ◽  
Szu-Han Huang
Keyword(s):  
Speckle Interferometry ◽  
Plane Displacement

Measurement for In-Plane Displacement of Tensile Plates with Through-Thickness Circular Hole and Partly Through-Thickness Circular Hole by Use of Speckle Interferometry

2006 ◽  
Vol 321-323 ◽  
pp. 77-80 ◽  
Author(s):  
Myung Soo Kim ◽  
Tae Hyun Baek
Keyword(s):  
Image Processing ◽  
Circular Hole ◽  
Steel Plate ◽  
Speckle Interferometry ◽  
Phase Shifting ◽  
Rear Side ◽  
Image Processing Algorithm ◽  
Phase Shifting Method ◽  
Fringe Patterns ◽  
Plane Displacement

Speckle interferometry with phase shifting method is used to measure in-plane displacements of a steel plate with a partly through-thickness circular hole and a steel plate with a through-thickness circular hole. The circular hole of steel plate with a partly through-thickness circular hole is cut on the rear side of the plate, so that it is not visible during experiment. The speckle noises of fringe patterns acquired by optical experiment are processed with image processing algorithm of Gaussian blur and the in-plane displacements of the two specimens are obtained by use of the processed fringe patterns. Also the in-plane displacements of the two specimens are calculated by use of ANSYS. The results of optical experiments are quite comparable to those of calculation with ANSYS.

Sign in / Sign up

Export Citation Format

Share Document