抄録
Acoustic Emission (AE) analysis using passive piezoelectric sensors is a standard tool for damage detection and damage severity assessment in structures made of fiber-reinforced polymer-matrix composites. Recently developed active piezoelectric elements (active fiber composites) can serve both as actuators and sensors. If implemented into composite structures, in principle, they offer a possibility both for damage detection and corrective action with one single device. As a first step towards this goal, model experiments on fiber-reinforced composites under mechanical loading have been performed. The sensors response of the AFC elements is compared with that of standard AE sensors. A particular emphasis is put on damage threshold detection.
