0000000000987751
AUTHOR
Jerome Serri
Digital Correlation Method Based on Microgeometrical Texture Patterns for Displacement Field Measurements
International audience
Digital Correlation Method Based on Micro-geometrical Texture Pattern for Strain Field Measurement
International audience; Image correlation methods are widely used in experimental mechanics to obtain displacement field measurements. Currently, these methods are applied using digital images of the initial and deformed surfaces sprayed with black or white paint. Speckle patterns are then captured and the correlation is performed with a high degree of accuracy to an order of 0.01 pixels. In 3D, however, stereo-correlation leads to a lower degree of accuracy. Correlation techniques are based on the search for a sub-image (or pattern) displacement field. The work presented in this paper introduces a new correlation-based approach for 3D displacement field measurement that uses an additional …