Spatial carrier phase shifting method for the phase recovery from two interferograms with closed fringes

2019 ◽  
Vol 437 ◽  
pp. 226-230 ◽  
Author(s):  
Jesús Muñoz-Maciel ◽  
Miguel Mora-Gonzalez ◽  
Víctor M. Duran-Ramírez ◽  
Francisco J. Casillas-Rodriguez ◽  
Francisco G. Peña-Lecona
Keyword(s):  
Carrier Phase ◽  
Phase Shifting ◽  
Phase Recovery ◽  
Phase Shifting Method ◽  
Carrier Phase Shifting

Spatial-carrier phase shifting method of fringe analysis for moiré interferometry

1993 ◽  
Vol 28 (2) ◽  
pp. 79-88 ◽  
Author(s):  
C Y Poon ◽  
M Kujawinska ◽  
C Ruiz
Keyword(s):  
Carrier Phase ◽  
Field Measurements ◽  
Displacement Function ◽  
Moiré Interferometry ◽  
Phase Shifting ◽  
Moire Interferometry ◽  
Fringe Analysis ◽  
Automated Method ◽  
Phase Shifting Method ◽  
Carrier Phase Shifting

The theory of an automated fringe pattern analysis using the spatial-carrier phase shifting method for moiré interferometry is presented. The automated method is shown to provide a fast and accurate strain measurement over the whole field. Measurements on a brass specimen and a tapered laminated composite specimen are shown to highlight the efficiency and the capability of this technique for moiré interferometry. The filtering technique used to remove noise from the required displacement function is also presented.

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