Silicon microelement vibration testing using conventional and heterodyned time-average interferometry with automated temporal and spatial phase stepping

2009 ◽  
Vol 47 (3-4) ◽  
pp. 504-511 ◽  
Author(s):  
Adam Styk ◽  
Krzysztof Patorski
Keyword(s):  
Vibration Testing ◽  
Spatial Phase ◽  
Phase Stepping ◽  
Time Average ◽  
Temporal And Spatial

Automated fringe pattern analysis in experimental mechanics: A review

1998 ◽  
Vol 33 (2) ◽  
pp. 105-125 ◽  
Author(s):  
J M Huntley
Keyword(s):  
Solid Mechanics ◽  
Automated Analysis ◽  
Random Errors ◽  
Orthotropic Plates ◽  
Fine Grid ◽  
Ball Impact ◽  
Spatial Phase ◽  
Bending Waves ◽  
Fringe Pattern Analysis ◽  
Temporal And Spatial

The paper reviews the main numerical techniques that have been developed to carry out fully automated analysis of fringe patterns resulting from solid mechanics experiments. These include temporal and spatial phase shifting interferometry, temporal and spatial phase unwrapping, and calculation of strain fields from the phase maps. Systematic and random errors associated with the various procedures are also analysed. A unified treatment for both speckle and smooth-wavefront interferograms is presented, and the common features underlying many of the algorithms are emphasized. The paper is illustrated with applications that include ball impact (moiré photography), bending waves in orthotropic plates (double-pulsed dual-reference wave holography) and finite strains in propellant grains (fine grid technique).

Robust spatial phase-stepping ESPI system

2001 ◽  
Author(s):  
Meinhard Sesselmann ◽  
Armando Albertazzi, Jr.
Keyword(s):  
Spatial Phase ◽  
Phase Stepping
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