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  3. Strain sensors & strain gauges
  4. Special application strain gauges
  5. FAC Series Crack Detection Strain Gauges

FAC Series Crack Detection Strain Gauges

Designed to measure the propagation speed of fatigue crack in a metal specimen


Key features

  • Applicable on: Metal & concrete
  • Operational temperature: -30~+80°C
  • Special plastics backings, Cu-Ni element
  • Gauge resistance: approx. 1Ω
  • Measuring range: 4.5mm, 20mm
  • Backing size 28x5mm, 43x25mm

About the FAC Series Crack Detection Straingauge

FAC series crack detection gauge
These gauges are designed to measure the propagation speed of fatigue crack in a metal specimen. The gauges are bonded with an adhesive on the position where the crack is initiated or the crack initiation is expected. The grids of the gauges, which are aligned at interval of 0.1mm or 0.5mm, are disconnected one by one with the propagation of the crack. The gauges are used together with the crack gauge adaptor CGA-120B, and the disconnection of one grid is measured as the change of approx. 45 or 40×10-6 strain by a strainmeter.

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Technical Specifications

Specification Value
Applicable specimen Metal, concrete
Backing Special plastics
Bonding adhesive CN, RP-2
Element Cu-Ni
Fatigue life at room temperature -
Operational temperature(°c) -30~+80°C
Strain limit -
Temperature compensation range(°c) -