Fiber Optic Sensors In Structural Health Monitoring
This paper presents an overview of hybrid fiber optic sensing systems based on scattering techniques fiber bragg gratings interferometric techniques and polarimetric methods in structural health monitoring.
Fiber optic sensors in structural health monitoring. Structural health monitoring shm can be understood as the integration of sensing and intelligence to enable the structure loading and damage provoking conditions to be recorded analyzed localized and predicted in such a way that nondestructive testing becomes an integral part of. Unaffected by electro magnetic fields and resistant to extreme temperatures and stress fiber optic sensors can be used even in the most harsh environments. The use of an online monitoring system based on brillouin optical time. Fibre optic methods for structural health monitoring john wiley sons inc.
Fiber optic sensor technology is being developed to provide existing and future aircrafts with shm capability due to its unique superior characteristics. Structural health monitoring shm based on advanced sensor technology is potentially a cost effective approach to meet operational requirements and to reduce maintenance costs. Fiber optic sensors in structural health monitoring abstract. The latest advances in research on sensor technology for structural health monitoring has been resulted in various types of shm sensors.
Fiber optic sensing allows for highly accurate robust and continuous structural health monitoring predicting and preventing equipment failure and structural damage to infrastructure. Smart structural health monitoring of composite materials with optical fiber sensors is becoming more and more important especially in the aviation industry. Development of fiber optic methods for shm based on short gauge longgauge and distributed sensors can be found in the following books. Wiley new york ny usa.
Both original research papers and review articles describing the current state of the art in this research field are welcome. An introduction for engineers and scientists. The first fiber optic sensor a closed loop fiber gyro was invented to replace mechanical spinning gyros on the delta rocket in 1978. Conception of such foss originated from fiber optic communications.
The following provides a brief review to the most widely used shm sensors for structural monitoring.