Matlab Code for Optical Tracking of Local TARP Mechanics

A custom Matlab post-processing script used to calculate mechanical properties of electrospun scaffolds melt-stamped in a rhombus pattern,  based on “grip-to-grip” displacements and optical strain measures. Optical strain measurements of the rhombus-shaped patterns were achieved by identifying the 4 nodes of a given rhombus and tracking the change in position of the centroid of each node on every image. Tracked nodes were used to calculate the local axial (e_y) and transverse (e_x) strains over the course of the mechanical test. Slopes of the linear regions of force-displacement were used to derive values for stiffness.