Multifunctional materials for SHM diagnosis and structural performance assessment

This report will evaluate the structural health monitoring SHM methodology developed in the framework of FIBREGY to obtain the damage state of the fibrebased structural elements used in offshore platformsThe nondestructive vibrationbased methodology deals with the variations of the key performance indicators KPIs eg overall vibration energy damping etc which are influenced by the presence of damage in the FRP materials To assess the damage state of the multifunctional materials a set of sensors andor optical fibers will be interleaved in the interlaminar regions of the FRPbased materials used in the marine structures Initially the main scope of this report is to explore the selection of the most suitable sensors to manufacture the multifunctional materials Subsequently the mechanical performance of the multifunctional materials will be analyzed with the paramount purpose to evaluate the possible weakness of the material induced by the embedding of the sensor Last it will be considered the testing of different specimens of multifunctional materials and the preparation of the best strategy for the validation of the monitoring system in a realcase through one of the WP6 demonstrators FRPbased towers