FIBRE OPTIC-BASED PATCH SENSOR FOR THE MONITORING OF REINFORCED CONCRETE STRUCTURES

The past three decades have witnessed remarkable advancements in structural health monitoring (SHM) systems, driven by the need to mitigate accidents involving civil engineering structures. By implementing a proactive maintenance strategy, construction industry professionals can reduce the risk of costly repairs, extend the life of structures, improve safety standards and maximize return on investment. In this context, Leon Grosse alongside Inouid, Brochier Technologies, and the laboratory LOCIE from Université Savoie Mont Blanc are combining their expertise in civil engineering structures construction, sensor development, optical fibers development, and structural diagnostics in buildings within the SENTMI Region project (PSPC Region 2020) to work on the development of an innovative optical fiber based technology. A 2D patch carrying woven optical fibers is tested on concrete structures at different scales using methods that include 2D digital image correlation (DIC). The main preliminary results are presented in this paper. Its performance has opened up important perspectives on the possibilities of detecting cracks, temperature variation and the presence of water in concrete structures.Paper 7