Speckle images from biaxial test on PMMA
Authors/Creators
- 1. Univ. Lille, CNRS, Centrale Lille, UMR 9013 - LaMcube - Laboratoire de Mécanique, Multiphysique, Multi-échelle, F-59000 Lille, France
- 2. ONERA, The French Aerospace Lab, Lille, France
- 3. College ECST, California State University-Los Angeles, USA
Description
These images were captured during a biaxial test on a PolyMethylAcrylate cruciform sample. The actuators were driven based on the strain measured during the test using GPU integrated DIC.
The speckle pattern was made by spraying black paint using an airbrush on a white coat of paint.
The camera is a Ximea XiB (CB500MG-CM), the lens a canon EF 100mm, pixel size is 4.51 µm/pix
The name of the images is "img_{count}_{time}.tiff" where {count} is the number of processed images {time} the instant the image was captured after the beginning of the test in seconds. The average time between two saved image 5.21s but is not guaranteed to be constant (std = 0.0364s). img_ref_{time}.tiff is the reference image used by the DIC algorithm.
Not all indexes are available because only 1/100 images were saved for post-processing to limit the volume of data.
This set of image can be used in many ways, including as a benchmark for comparing DIC algorithms. Since they are real-world images, the "real" displacement is not available.
correl.zip contains a csv file with the results of the real-time integrated DIC used during the test. Because a few images were dropped due to limitations, make sure to use the timestamp to match the images and the csv.