ACOUSTIC TRANSDUCERS FOR STRUCTURAL HEALTH MONITORING AND METHODS OF FABRICATION

摘要

A method of fabricating an acoustic transducer for structural health monitoring, a system with acoustic transducer for structural health monitoring, and a method for structural health monitoring using acoustic transducers are disclosed. The method of fabricating the acoustic transducer comprises in-situ direct-writing of a piezoelectric material to create a piezoelectric layer on a structure to be monitored and in-situ direct-writing of at least one conductive electrode for the piezoelectric layer as an electrode. The system with acoustic transducer for structural health monitoring comprises a structure to be monitored, a layer of piezoelectric material on top of the structure, and a layer of electrode for the piezoelectric material layer. Finally, the method of structural health monitoring comprises the use of the acoustic transducers to generate and detect acoustic waves in the structure being monitored by comparing electrical signals detected by the acoustic transducers at different times.