Active/passive stand-alone devices for vibration control and damage detection

摘要

This invention is referring to active/passive self-powered - they do not need for external power supply - devices for vibration control and damage detection in structures. The combination of active elements (1) (piezoelectrics in this invention, but not limited to these) and passive elements (2) (viscoelastics in this invention, but not limited to these) makes possible to join together a system for vibration control with a system for structural damage detection based in the anomalies detection in the elastic waves propagation, in changes of electro mechanic impedance or in others changes of the characteristics or the environment of the active elements, and allowing the system to abstain from external power supply depending on the configuration and the inherent vibration level.

<Paragraphs id="pa02" num="0002" xmlns:base="http://www.sipo.gov.cn/XMLSchema/base">The application of this invention is the vibration control and damage detection in aeronautic and thin-plate structures in general.