Damage detection in concrete structures using tunable piezoelectric actuators

抄録

In this study, the state of the art of modal parameters-shift-basedd amage identification isadvanced by incorporating a tunable piezoelectric actuator into the structure to enrich themodal parameters measurements, meanwhile implementing an identification algorithm tosufficientlyu tilizet he enriched information.B y integratingt unablep iezoelectrica ctuatorsi ntothe structure, we can introduce additional resonant peaks into the system dynamic response inthe frequency domain, and these additional peaks can be adjusted over the frequency band bytuning the actuator. Clearly, a significantly increased amount of modal parameters shiftinformation can be expected to reflect the damage effect. A series of analyses using areinforced concrete (RC) wall and a RC column integrated with a tunable piezoelectricactuator is carried out to demonstrate this proposed methodology and verify the performance.The results indicate that piezoelectric actuator has high potential applicability to damageassessment of concrete structures.