Research of Under-Sampling Technique for Digital Image Correlation in Vibration Measurement

2017 ◽  
pp. 49-58 ◽  
Author(s):  
Yihao Liu ◽  
Hongjian Gao ◽  
James Zhuge ◽  
Jeff Zhao
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Sampling Technique ◽  
Image Correlation ◽  
Vibration Measurement ◽  
Under Sampling

Digital Speckle Projection for Vibration Measurement by Applying Digital Image Correlation Method

2006 ◽  
Vol 326-328 ◽  
pp. 99-102 ◽  
Author(s):  
Fu Jun Yang ◽  
Xiao Yuan He
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
High Speed ◽  
Speckle Pattern ◽  
Plane Deformation ◽  
Correlation Method ◽  
Image Correlation ◽  
Vibration Measurement ◽  
Digital Image Correlation Method ◽  
Digital Speckle

Digital image correlation method (DICM) is described as a robust in-plane deformation measuring method due to its simple optical setup and the insensitivity against ambient noise. Based on DICM, digital speckle projection has been developed for shape measurement. This paper explores the possibilities for vibration analysis using digital speckle projection together with DICM. A digital speckle pattern, generated by computer, is projected on an object surface using an LCD projector. Then the dynamic deformation modulated speckle images are captured by a high-speed CCD camera and saved in the computer. By using the self-developed temporal sequence digital images correlation algorithm, the deformation and vibration mode can be analyzed quantitatively. The proposed method avoids using stroboscopic or laser illumination and simplifies the experimental setup for vibration measurement, while it is time-consuming thanks to calculating a large amount of correlation coefficients. The experimental performance on a harmonic-vibrating cantilever beam well demonstrates the validity of the new method.

Finite element model updating from full-field vibration measurement using digital image correlation

2011 ◽  
Vol 330 (8) ◽  
pp. 1599-1620 ◽  
Author(s):  
Weizhuo Wang ◽  
John E. Mottershead ◽  
Alexander Ihle ◽  
Thorsten Siebert ◽  
Hans Reinhard Schubach
Keyword(s):  
Finite Element ◽  
Digital Image Correlation ◽  
Finite Element Model ◽  
Digital Image ◽  
Model Updating ◽  
Element Model ◽  
Image Correlation ◽  
Vibration Measurement ◽  
Finite Element Model Updating ◽  
Full Field

3D robust digital image correlation for vibration measurement

2016 ◽  
Vol 55 (7) ◽  
pp. 1641 ◽  
Author(s):  
Zhong Chen ◽  
Xianmin Zhang ◽  
Sergej Fatikow
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Image Correlation ◽  
Vibration Measurement

3D digital image correlation methods for full-field vibration measurement

2011 ◽  
Vol 25 (3) ◽  
pp. 917-927 ◽  
Author(s):  
Mark N. Helfrick ◽  
Christopher Niezrecki ◽  
Peter Avitabile ◽  
Timothy Schmidt
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Image Correlation ◽  
Vibration Measurement ◽  
Full Field ◽  
Correlation Methods ◽  
3D Digital Image Correlation
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