Structural health monitoring of an impulsively loaded structure using wave-propagation based instantaneous baseline

Jacob C. Dodson; Jason R. Foley; Daniel J. Inman

doi:10.1117/12.847422

9 April 2010 Structural health monitoring of an impulsively loaded structure using wave-propagation based instantaneous baseline

Jacob C. Dodson, Jason R. Foley, Daniel J. Inman

Author Affiliations +

Proceedings Volume 7650, Health Monitoring of Structural and Biological Systems 2010; 765038 (2010) https://doi.org/10.1117/12.847422
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

Recent advances in Structural Health Monitoring have provided the means of eliminating the prerecorded baseline measurement by producing an instantaneous baseline. The damage detection method presented is near-real time damage detection instantaneous baseline method by using ambient excitation and passive sensing. The method uses an array of sensors and compares the features in the data of the different wave-propagation paths to determine an undamaged baseline. The wave-propagation paths that greatly differ from the instantaneous baseline indicate the location of damage along those paths. The details of the signal processing algorithm and evaluation of the method for detecting damage are included. The damage detection method presented is able to detect damage in a wave path using an instantaneous base line.

Citation Download Citation

Jacob C. Dodson, Jason R. Foley, and Daniel J. Inman "Structural health monitoring of an impulsively loaded structure using wave-propagation based instantaneous baseline", Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 765038 (9 April 2010); https://doi.org/10.1117/12.847422

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