Stress Gauge

SF series Stress gauge

These gauges are intended to measure the stress in an optional direction of the specimen in plane stress field. The gauges are sensitive not only in these axial direction but also in the transverse direction, and the sensitivity ratio of the transverse direction to the axial directions is equal to the Poisson’s ratio of the specimen material. In addition, the gauges are not sensitive to the shearing strain. Accordingly, the output of the gauges is proportional to the stress in the axial direction. The gauges are available in three types depending on the Poisson’s ratio of the specimen material. 

Applicable specimen Metal
Operational temperature(℃) -20 to +200℃
Temperature compensation range(℃) +10 to +100℃
Applicable adhesive NP-50B, CN, C-1
Backing Polyimide
Element Cu-Ni
Strain limit -
Fatigue life at room temperature 1 x 106 (±1500 x 10-6 strain)
  • AXIAL STRESS MEASUREMENT

    Gauge pattern Type Gauge
    length
    (mm)
    Gauge
    width
    (mm)
    Backing
    length
    (mm)
    Backing
    width
    (mm)
    Resistance
    (Ω)

    Poisson's
    ratio
    of specimen
    sfa_28511 SFA-285-11 4 3 9 6 120 0.285
    SFA-305-17 4 3 9 6 120 0.305
    SFA-330-23 4 3 9 6 120 0.330

    Each package contains 10 gauges.
    Lead wire attachment service is available on request.