Theory 7
Agilent Nano Indenter G200 User’s Guide
7-26
Figure 7-19
Hardness vs Displacement into Surface for fused silica
The parameter S
2
/P should remain constant with depth for bulk
materials. If the data trend up or down, as shown in
, the
proper frame stiffness should be determined as described in
Stiffness and Area Function Calibration
Figure 7-20
Data indicate that frame stiffness requires calibration