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-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.
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