Gauge factor

Gauge factor (GF) or strain factor of a strain gauge is the ratio of relative change in electrical resistance R, to the mechanical strain ε. The gauge factor is defined as:[1]

where

  • ε = strain =
    • = absolute change in length
    • = original length
  • ν = Poisson's ratio
  • ρ = resistivity
  • ΔR = change in strain gauge resistance due axial strain and lateral strain
  • R = unstrained resistance of strain gauge
  1. ^ Beckwith, Thomas G., N. Lewis Buck, Roy D. Marangoni (1982). Mechanical Measurements (Third ed.). Reading, MA: Addison-Wesley Publishing Co. p. 360. ISBN 0-201-00036-9.{{cite book}}: CS1 maint: multiple names: authors list (link)