Fig. 2: Multi-scale stress measurements.
From: Multiscale stress dynamics in sheared liquid foams revealed by tomo-rheoscopy
a Example of a meshed bubble interface obtained by marching cube, over which the Batchelor stress tensor is integrated with each individual triangle surface dS and normal unit vector n. b The shear stress σθz at various radius rescales when shown as a function of the local deformation γ. σθz as a function of time is shown in the sub-figure. c Torque measured by the rheometer and obtained from image analysis as a function of time for various series. d Torque derived from image analysis plotted against the corresponding rheometer values for the same data as in c.
