3D deformation field throughout the interior of materials.
Citations Over Time
Abstract
This report contains the one-year feasibility study for our three-year LDRD proposal that is aimed to develop an experimental technique to measure the 3D deformation fields inside a material body. In this feasibility study, we first apply Digital Volume Correlation (DVC) algorithm to pre-existing in-situ Xray Computed Tomography (XCT) image sets with pure rigid body translation. The calculated displacement field has very large random errors and low precision that are unacceptable. Then we enhance these tomography images by setting threshold of the intensity of each slice. DVC algorithm is able to obtain accurate deformation fields from these enhanced image sets and the deformation fields are consistent with the global mechanical loading that is applied to the specimen. Through this study, we prove that the internal markers inside the pre-existing tomography images of aluminum alloy can be enhanced and are suitable for DVC to calculate the deformation field throughout the material body.
Related Papers
- → Digital image correlation and biaxial test on composite material for anisotropic damage law identification(2009)77 cited
- → Peridynamic Approach to Digital Image Correlation Strain Calculation Algorithm(2022)7 cited
- Incremental Displacement Measurement Based on Digital Image Correlation(2007)
- Smoothing Algorithm for Strain Measurement in Digital Image Correlation Method(2008)
- → On the Image Correlation Measurement of Displacement Fields With Strong Strain Gradients Or Discontinuities(2007)