Structural Health Monitoring Using Motion Magnification

Structural health monitoring and assessment are critical areas of research for civil and aerospace applications. To address any rapid degradation in structural integrity, it is imperative to monitor and note changes in the structure’s behavior at regular time intervals. The current state-of-the art requires many sensors and spending extensive amounts of time processing data when assessing the health of a structure. One proven method of detecting damage is observing the change in mode shapes and natural frequencies overtime. Optical technologies have been demonstrated to accurately detect the dynamic properties of a structure. The novel aspect is determining how to interpret those changes, and how to relate this to damage location and potential severity. The sensitives of the optical techniques to various degrees of damage and excitation needs to be determined to accurately interpret the results.