Simultaneous active strain and damage sensing fiber acoustic wave piezoelectric transducer

摘要

The present invention simultaneously active sensing fiber strain and damage initiates a wave piezoelectric transducer. The present invention is a piezoelectric element for transmitting and receiving , which is installed from a distance to the structure , and the fibers that connect the piezoelectric elements for the transmission and reception , an ultrasonic transmitting unit is designed for applying a voltage signal to the transmission piezoelectric element for generating an ultrasonic wave , the number credit and the ultrasonic receiver for receiving ultrasonic signals in the form of a change of the voltage signal detected by the piezoelectric element , and a monitoring unit which processes the strain strain information in the received ultrasound signal , corrupted the information in the received ultrasound signal to monitor damage to process a includes . ;