Agilent Technologies Nano Indenter G200 User Manual page 308

Agilent Nano Indenter G200 User's Guide
The instrument frame stiffness calibration provides the value of K
the reduced modulus and hardness are constant (not even necessarily
known) then a plot of total compliance (1/K
intercept of 1/K . This is shown schematically in
f
Figure 7-4 Schematic representation of instrument frame stiffness
calibration
These parameters are detailed in the following equations:
where
1 K 
  1 S 
= 1 K +
f
1 –
1 K 
   
S = – 1 K
f
) vs. (1/P) is a line with
f

E
1
r
-- - = ------------ -
S
2 A
Theory 7
(13)
(14)
. If
f
Figure 7-4.
(15)
7-11