A system-on-board approach for impedance-based structural health monitoring

Jina Kim; Benjamin L. Grisso; Dong S. Ha; Daniel J. Inman

doi:10.1117/12.715791

10 April 2007 A system-on-board approach for impedance-based structural health monitoring

Jina Kim, Benjamin L. Grisso, Dong S. Ha, Daniel J. Inman

Proceedings Volume 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007; 65290O (2007) https://doi.org/10.1117/12.715791
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

Currently, much of the focus in the structural health monitoring community is shifting towards incorporating health monitoring technology into real world structures. Deployment of structural health monitoring systems for permanent damage detection is usually limited by the availability of sensor technology. Previously, we developed the first fully self-contained system that performs impedance-based structural health monitoring. This digital signal processor based system effectively replaces a traditional impedance analyzer and all of the manual analysis usually required for damage determination. The work described here will focus on improving this hardware. Efforts are made to reduce the overall power consumption of the prototype while at the same time improving the overall performance and efficiency. By introducing a new excitation method and implementing a new damage detection scheme, reliance on both analog-to-digital and digital-to-analog conversion are circumvented. These new actuation and sensing techniques, along with the underlying hardware, are described in detail. The reduction of power dissipation and improved performance are documented and compared with both traditional impedance techniques and the previous prototype.

Citation Download Citation

Jina Kim, Benjamin L. Grisso, Dong S. Ha, and Daniel J. Inman "A system-on-board approach for impedance-based structural health monitoring", Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 65290O (10 April 2007); https://doi.org/10.1117/12.715791

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