1. Assessment of the Film-Free Water Decal Method for Speckle Pattern Application in Digital Image Correlation
- Author
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Anna Camille Sanchez and Dong-Keon Kim
- Subjects
film-free water decal ,digital image correlation (DIC) ,speckle pattern ,SS275 steel ,strain measurement ,tensile testing ,Chemical technology ,TP1-1185 - Abstract
Digital Image Correlation (DIC) often encounters challenges with variability and consistency in traditional speckle pattern application techniques, such as spray-painting, affecting measurement accuracy and reliability. This study evaluates a film-free water decal method as an alternative for applying speckle patterns in DIC. SS275 structural steel specimens were prepared with speckle patterns using both the film-free water decal method and traditional spray-painting. The quality of the speckle patterns was assessed, and their effectiveness for DIC was evaluated through tensile testing and a comparison with strain gauge measurements. The film-free water decal method provided enhanced control over speckle pattern application, resulting in high-quality, consistent patterns. Strain measurements obtained using this method closely matched those from traditional methods, confirming its reliability. The film-free water decal method offers a practical and reliable alternative to spray-painting, improving the consistency and accuracy of DIC experiments, with potential applications in various engineering and scientific fields.
- Published
- 2024
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