A new fiber-optic acoustic/vibration sensor - Characteristics and application to civil structural health monitoring

Abstract

A new fiber-optic acoustic/vibration sensor has been developed and applied to structural health monitoring. The sensor is based on a new theory Doppler effect in flexible and expandable light-waveguide. A very high sensitivity is achieved in the extremely wide frequency range. Principle, sensor configuration and sensitivity, measurement system and damage detection in the reinforced concrete structural models were described in the present paper. A new nondestructive evaluation (NDE) method for civil structural health monitoring and diagnostics has been proposed. © 2005 Springer.