High Endurance Strain Gauge
DSF series High Endurance Strain Gauge
These gauges are designed for fatigue tests, and can reach a fatigue life of over 10 million times at a strain level of ±3000 με. Compared to previously (1 million times at ±1500με), these are gauges of exceptionally high durability.
In aviation and other areas, repeated load tests of large elongation of composite materials are conducted. However, it had been necessary to adhere a new strain gauge frequently as a gauge reached its fatigue life. The DSF series greatly reduces time and cost of adhering gauges.
| Applicable specimen | Metal, Composite materials |
|---|---|
| Operational temperature(°C) | -60 to +200°C |
| Temperature compensation range(°C) | - |
| Applicable adhesive | CN, EB-2B, C-1 |
| Backing | Polyimide |
| Element | Special alloy |
| Strain limit | 1% (10000×10-6 strain) |
| Fatigue life at room temperature | 1×107 (±3000×10-6 strain) |
* Because this strain gauge is not self-temperature-compensated, it is recommended to preliminarily measure thermal output of this strain gauge using a dummy specimen which is made of the same material as the test specimen.
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High Endurance Strain Gauge
Gauge pattern Type Gauge
length
(mm)Gauge
width
(mm)Backing
length
(mm)Backing
width
(mm)Resistance
(Ω)Gauge factor 
DSFLA-2-350 2 2 8 3.3 350 Approx. 3.5 DSFLA-5-350 5 2 11 3.2 350 Approx. 3.5 -
Lead wires recommended for DSF series strain gauges (made-to-order)
Purpose Lead wires Lead wire symbol Operating temperature range
(℃ )Gauge type exampled General measurement (no temperature change) 2-wire parallel vinyl wire LJC －20 to +80 DSFLA-2-350-3LJC General measurement 3-wire parallel vinyl wire LJCT －20 to +80 DSFLA-2-350-3LJCT Medium/high temperature 3-wire parallel special vinyl wire LXT －20 to +150 DSFLA-2-350-3LXT 3-strand twisted FEP single-core wire 6FB♦LT －269 to +200 DSFLA-2-350-6FB3LT * “♦” indicates lead wire length
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