Real-time system for monitoring of structures

The invention consists in a frequency selective acoustic transducer for directional sensing of guided waves. The transducer can be employed both for directional sensing and generation of guided waves.

Title of the patent Real-time system and method for monitoring the integrity of structures using elastic waves
Thematic area Electrical, electronic and information engineering
Ownership Alma Mater Studiorum - Università di Bologna
Inventors Luca De Marchi, Nicola Testoni, Alessandro Marzani
Protection Italy, Europe, United States
Licensing status Available for licensing agreement
Keywords Actuators, piezoelectric, sensors, dispersion compensation, elastic waves, data over power communications, impedance matching, defect localization, smart embedded systems
Filed on Apr 16, 2015

The assessment of the structural integrity of the modern aerospace, aeronautic, railway and railroad platforms is crucial for guaranteeing users safety. To this aim structural health monitoring systems allows for the early detection of damages, the evaluation of their progression, as well as the assessment of the effectiveness of repair actions by means of sensors glued or permanently embedded in the structure.

The aim of the invention is to allow for the integration of a structural health monitoring system in arbitrary complex structures, giving way to the realization of smart structure capable to autonomously perform structural health monitoring tasks, without requiring out-of-service time.

With respect to commercial systems, the proposed systems is characterized by

-        possibility to be applied to both standard and composite materials

-        reduced power consumption, volume and weight, allowing for reduced operating costs;

-        reduced cabling complexity, giving way to reduced installation and maintenance costs.