Figure 9From: Direct-Ink-Writing Printed Strain Rosette Sensor Array with Optimized Circuit LayoutStrain monitoring for a specimen based on the printed strain rosette sensor array: (a) Testing set up, (b) and (c) Two sides of the specimen attached by the printed strain rosette sensor array and DIC-speckle, (d) and (e) Real-time recording strain data at the six marked branches monitored by the printed strain rosette sensor array and the data extracted from the DICBack to article page