Fiber optic extensometer for concrete structure

Giving a fiber optic edge to concrete infrastructure.

Monitoring aging buildings or integrating smart instrumentation in critical infrastructure is common practice. Especially for concrete constructions, subject to cracking and material deterioration over time.

Built in robust stainless steel 316L, these sensors can be used in demanding marine environment. Even in applications where sensors are permanently exposed to sea conditions such as concrete dock, wharf, and offshore platform. Since they don’t drift over time and maintenance is not required, they can be used in surveillance applications which last for decades.

The fiber optic extensometer can be used to monitor single crack or group of concrete fissures through its long base version. The span could reach meters if needed to optimize surveillance of grouped fissures.

A version is also available to be embedded easily in fresh concrete. This design makes in-situ monitoring of new concrete structure easy and reliable.

Added advantages to your monitoring activities

It’s not uncommon now to see Opsens fiber optic extensometer installed in concrete structures such as bridges, dams, tunnels, or piles. The inherent advantages of fiber optic sensors provide a broad array of benefits:

  • no maintenance needed,
  • no drift over time
  • not affected by transverse strain
  • Immune to electric disturbances such as lightning or high voltage
  • Intrinsically safe
  • Reliable and accurate in challenging conditions
  • Can be used in application where temperature can reach up to 250 Celsius
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