A Three-Dimensional Strain Rosette Sensor Based on Graphene Composite with Piezoresistive Effect

Table 4

Slope of fitting line of strain.

Slope	Vertical strain	Transverse strain
SL1	167.73 (E3)	64.2 (E1)	65.05 (E2)	65.47 (E4)
SL2	196.08 (VSG)	75.56 (TSG)
SL1/SL2	0.86	0.85	0.86	0.87
	0.86 (average value)