Motion VELOCE User's Guide download pdf (Page 16)

Veloce 50 Operating Manual

The relative strain value is expressed by the following equation:

)()()(

ttt

−

where:

)(t

is the relative strain as fonction of time

)(t

is the absolute or true strain as fonction of time

)(

is the absolute or true strain at time t

Time

Relative strain

Measurement s start ed here

Measurement s st art ed here

bsolute or

true strain

Example 2

RELATIVE STRAIN MEASUREMENTS

(

)

(

)

Relative strain

(

)

Example 1

Figure 5. Schematic explanation of relative measurements.

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Motion VELOCE User's Guide Page 16