Speckle pattern correlation for local approach of damage evaluation

1996 ◽  
Author(s):  
Pierre R. Slangen ◽  
Patrick Ienny ◽  
Max Nemoz-Gaillard
Keyword(s):  
Speckle Pattern ◽  
Damage Evaluation ◽  
Local Approach ◽  
Pattern Correlation

Use of digital speckle pattern correlation for strain measurements in a CuAlBe shape memory alloy

2009 ◽  
Vol 60 (8) ◽  
pp. 775-782 ◽  
Author(s):  
F.M. Sánchez-Arévalo ◽  
T. García-Fernández ◽  
G. Pulos ◽  
M. Villagrán-Muniz
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Speckle Pattern ◽  
Strain Measurements ◽  
Pattern Correlation ◽  
Digital Speckle

Speckle Pattern Correlation in Fluid Mediums in the Quantum Limited Detection Range

2005 ◽  
Author(s):  
R.J. Grasso ◽  
P.H. Mui ◽  
S.J. Amore ◽  
D.H. Weiss ◽  
A.N. Jilling ◽  
...  
Keyword(s):  
Speckle Pattern ◽  
Detection Range ◽  
Pattern Correlation

Measurement of Whole Blood Coagulation Time by Laser Speckle Pattern Correlation

2020 ◽  
Vol 54 (4) ◽  
pp. 262-266
Author(s):  
Yu. D. Liushnevskaya ◽  
F. A. Gubarev ◽  
L. Li ◽  
A. V. Nosarev ◽  
V. S. Gusakova
Keyword(s):  
Blood Coagulation ◽  
Whole Blood ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Coagulation Time ◽  
Pattern Correlation ◽  
Whole Blood Coagulation Time

Studying of Optical Fiber Strain Using Speckle Pattern Correlation

2015 ◽  
Vol 19 ◽  
pp. 10-18
Author(s):  
Niveen Farid ◽  
Hatem Hussein ◽  
Mohamed El-Bahrawi
Keyword(s):  
Control System ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Temperature Control ◽  
Speckle Pattern ◽  
Two Dimensions ◽  
Temperature Control System ◽  
Speckle Correlation ◽  
Pattern Correlation ◽  
Mechanical Stage

The present work discusses the optical fiber strain induced by the thermal and the mechanical effects. Two different optical fibers of different core diameters were used in the study. The thermal effect was induced by temperature control system in order to raise optical fibers temperatures to controlled values. The mechanical stress was induced on the optical fibers by a micro mechanical stage. The sensitivity of the optical fibers to both effects was studied by speckle pattern correlation in which the speckles are recorded at each disturbance and analyzed. By tracing the recorded speckles , x and y displacements could be measured and the strain could be determined in two dimensions. Power attenuation in each fiber was studied in each case as well. Both speckle correlation and power attenuation techniques used in the study showed similar indication on the sensitivity of the optical fibers to the external disturbers.

Simple X-ray speckle-pattern correlation interferometer

1999 ◽  
Vol 6 (6) ◽  
pp. 1168-1173 ◽  
Author(s):  
Rachel Eisenhower ◽  
Rainer Gehrke ◽  
Gerhard Materlik ◽  
Michael Drakopoulos ◽  
Alexandre Simionovici ◽  
...  
Keyword(s):  
Speckle Pattern ◽  
X Ray ◽  
Pattern Correlation ◽  
Correlation Interferometer
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