WOLFRAM|DEMONSTRATIONS PROJECT

Mechanical Sensitivity of Soft Testing Machines

​
K
x
10.
K
m
25.
mechanical sensitivity (
S
m
) = ​ 0.510
ratio of resistances (
K
x
/
K
m
) = 0.400
This Demonstration illustrates how the mechanical sensitivity of a testing machine is affected by the ratio of the stiffness of the specimen to that of the machine. An idealized situation is considered, in which both the machine and the specimen have constant stiffness. The mechanical sensitivity is defined as the ratio of the change in resistance of the machine-specimen array to that of the specimen alone.