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Second-order phenomena in strain measurement by speckle techniques
Year:
1991
Source of publication :
Optics and Lasers in Engineering
Authors :
Keinan, Miriam
;
.
Volume :
15
Co-Authors:
Keinan, M., Dept. of Aeronautical and Space Engineering, Technion, Israel Institute of Technology, Haifa, 32000, Israel
Politch, J., Dept. of Aeronautical and Space Engineering, Technion, Israel Institute of Technology, Haifa, 32000, Israel
Facilitators :
From page:
149
To page:
182
(
Total pages:
34
)
Abstract:
The contrast degradation due to tilt between exposures limits the amount of tilt, the number of fringes and the spatial resolution. The effect was derived quantitatively and verified experimentally. Mutual influences between system parameters cause ambiguity in the measurement results. The main effects are imaginary displacement resulting from combined deflection and initial slope, and imaginary strain resulting from deflection. These effects were demonstrated experimentally. Formulas were developed that enable the designer of the experiment to choose the desirable parameters of the set-up. They point out the difficulties in using the method in 'field measurements', primarily because of the finite dimensions of the lens and the photographic plate. © 1991.
Note:
Related Files :
Laser Speckle Shearing Interferometry (SSI)
Mirror Effect
Mirrors--Effects
Second-Order Phenomena
Virtual Displacement
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More details
DOI :
10.1016/0143-8166(91)90074-4
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
27889
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:34
Scientific Publication
Second-order phenomena in strain measurement by speckle techniques
15
Keinan, M., Dept. of Aeronautical and Space Engineering, Technion, Israel Institute of Technology, Haifa, 32000, Israel
Politch, J., Dept. of Aeronautical and Space Engineering, Technion, Israel Institute of Technology, Haifa, 32000, Israel
Second-order phenomena in strain measurement by speckle techniques
The contrast degradation due to tilt between exposures limits the amount of tilt, the number of fringes and the spatial resolution. The effect was derived quantitatively and verified experimentally. Mutual influences between system parameters cause ambiguity in the measurement results. The main effects are imaginary displacement resulting from combined deflection and initial slope, and imaginary strain resulting from deflection. These effects were demonstrated experimentally. Formulas were developed that enable the designer of the experiment to choose the desirable parameters of the set-up. They point out the difficulties in using the method in 'field measurements', primarily because of the finite dimensions of the lens and the photographic plate. © 1991.
Scientific Publication
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