Laser speckle correlation applied to flow field measurements in granular media Export

@article{Hamm2006, abstract = {A laser speckle correlation method is developed to measure slow macroscopic flow fields in a randomly packed granular medium. The method is useful for planar geometry configurations like the one considered here, namely a sample that is subjected to an indentation type test. The main feature revealed by the method in this system, is the formation of shear bands of well-defined shapes, proper of a Coulomb-like material. We characterize these structures by showing that they concentrate vorticity and shear deformation. In addition, the method provides high-precision measurements of tiny displacements occurring far below shear bands.}, author = {Hamm, E. and Melo, F.}, citeulike-article-id = {4320113}, citeulike-linkout-0 = {http://dx.doi.org/10.1209/epl/i2005-10412-8}, doi = {10.1209/epl/i2005-10412-8}, journal = {EPL (Europhysics Letters)}, keywords = {granular\_drag, penetration\_paper}, number = {3}, pages = {356--362}, posted-at = {2009-04-15 20:03:27}, priority = {2}, title = {Laser speckle correlation applied to flow field measurements in granular media}, url = {http://dx.doi.org/10.1209/epl/i2005-10412-8}, volume = {73}, year = {2006} }

TY - JOUR ID - Hamm2006 L3 - citeulike-article-id:4320113 N2 - A laser speckle correlation method is developed to measure slow macroscopic flow fields in a randomly packed granular medium. The method is useful for planar geometry configurations like the one considered here, namely a sample that is subjected to an indentation type test. The main feature revealed by the method in this system, is the formation of shear bands of well-defined shapes, proper of a Coulomb-like material. We characterize these structures by showing that they concentrate vorticity and shear deformation. In addition, the method provides high-precision measurements of tiny displacements occurring far below shear bands. IS - 3 JF - EPL (Europhysics Letters) EP - 362 TI - Laser speckle correlation applied to flow field measurements in granular media VL - 73 SP - 356 KW - granular_drag KW - penetration_paper AU - Hamm, E AU - Melo, F PY - 2006/// UR - http://dx.doi.org/10.1209/epl/i2005-10412-8 ER -