scholarly journals Speckle pattern optimization for DIC technologies

2021 ◽  
Author(s):  
Szabolcs Szalai ◽  
Gábor Dogossy
Keyword(s):  
Digital Image Correlation ◽  
Strain Gage ◽  
Digital Image ◽  
Speckle Pattern ◽  
Image Correlation ◽  
Important Advance ◽  
Deformation Strain ◽  
Technological Issue ◽  
The Relationship ◽  
Scientific Fields

This paper contains the relation between speckle pattern and Digital Image Correlation (DIC). The most important advance in experimental mechanics has been DIC since the strain gage. The deformation (strain) of an object can be visualized by DIC. Among all scientific fields, the DIC Technologies have seen a dynamic increase. The relationship between the paint and the sample - as the patterns mediate the deformation to the cameras - has been the most important technological issue. In this article the method developed for the detection of isolated particles in alloys is used to characterize the spots, which help the best speckle pattern has determined.

scholarly journals Speckle pattern processing by digital image correlation

2016 ◽  
Vol 48 ◽  
pp. 04003 ◽  
Author(s):  
Fedor Gubarev ◽  
Lin Li ◽  
Miron Klenovskii ◽  
Anatoliy Glotov
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Speckle Pattern ◽  
Image Correlation ◽  
Pattern Processing

Development of the Auto Mesh Generation Program for a Digital Image Correlation Method

2011 ◽  
Vol 462-463 ◽  
pp. 112-117
Author(s):  
Koji Tomita ◽  
Kenji Machida ◽  
Zu Guang Zhang
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Mesh Generation ◽  
Speckle Pattern ◽  
Correlation Method ◽  
Image Correlation ◽  
The Finite Element Method ◽  
Matching Method ◽  
Digital Image Correlation Method ◽  
Complicated Configuration

Since the method of performing displacement measurement and stress assessment of material by non-contact comes to capture the spotlight, study of the digital image correlation method which adopted the pattern-matching method for asking for displacement by deformation of a surface speckle pattern has been advanced. When the configuration for an analysis was settled in the rectangle and the square region, the whole-field mesh generation was also possible, but when it became a complicated configuration, the background etc. entered and mesh generation was affected. In order to solve such a problem, even if the object for an analysis was a complicated configuration, it aimed at generating a mesh automatically and obtaining appropriate analysis output in the displacement analysis and stress analysis using the generated mesh. In addition, the validity of the result was verified by the comparison with the finite element method. By this study, the convenience and availability of the digital image correlation method was improved remarkably, and it became clear to become a leading tool in health monitoring.

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