In structural health monitoring (SHM) of aerospace components, such as stiffened panels, detection and localization of damage is an important issue. This paper presents a methodology for determining the existence and location of low velocity impact damage in a stiffened composite panel. Using a matching pursuit decomposition algorithm, converted modes due to damage were extracted in the time-frequency domain. The energy of the converted mode was then used in conjunction with a probabilistic tomography approach that was able to localize the damage with a high level of accuracy. The results obtained confirm the ability of this approach to detect and localize damage in complex composite structures.
- Aerospace Division
Damage Localization in a Stiffened Composite Panel Using a Lamb Wave Based Tomography Approach
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Vizzini, AJ, II, Liu, Y, & Chattopadhyay, A. "Damage Localization in a Stiffened Composite Panel Using a Lamb Wave Based Tomography Approach." Proceedings of the ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Scottsdale, Arizona, USA. September 18–21, 2011. pp. 513-518. ASME. https://doi.org/10.1115/SMASIS2011-5101
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