This document discusses using fiber optic sensors with polydimethylsiloxane coatings for structural health monitoring of concrete structures. It aims to develop an affordable monitoring strategy for alkali-aggregate reaction and corrosion detection. The strategy involves a heterogeneous multi-sensor data fusion system using acoustic, electro-mechanical, optical and embedded sensors. Data from these various sensors will be fused using neural networks to accurately assess damage levels and correlate them with alkali concentrations.

1. SENSOR BASED STRUCTURAL HEALTH MONITORING OF CONCRETE STRUCTURES Othman Sidek, S.A.Quadri and Hassan bin Afzal Collaborative µ-electronic Design Excellence Centre Universiti Sains Malaysia Presented in Université de Sherbrooke

4. Schematic Diagram of FOS

7. Schematic Diagram of EFOCS Here, the first figure represents Typical layout of corrosion sensors in reinforced concrete structure and the next figure shows the Photograph of fiber optic corrosion sensor. Source : J. Gao et al. (2011)

11. Experimental setup

12. Data flow diagra m