Cross-correlation of distributed fiber optic strain map for structural elements diagnosis

M. Ciminello

doi:10.1117/12.2526287

3 October 2019 Cross-correlation of distributed fiber optic strain map for structural elements diagnosis

M. Ciminello

Proceedings Volume 11207, Fourth International Conference on Applications of Optics and Photonics; 1120707 (2019) https://doi.org/10.1117/12.2526287
Event: IV International Conference on Applications of Optics and Photonics (AOP 2019), 2019, Lisbon, Portugal

Abstract

This work resumes the results achieved by a no-model based approach for SHM. The proposed methodology provides a signal to noise ratio improvement by cross-correlation function applied to a derived signal of the strain vector. The bonding line integrity of skin-stringer interface is the committed target, and the capability of debonding detection after low energy impact is estimated. The methodology is tested on aeronautical stiffened CFRP panels under different loading conditions after impact: residual strain, static load and quasi static load are considered. The encouraging results drove a full scale applications.

Citation Download Citation

M. Ciminello "Cross-correlation of distributed fiber optic strain map for structural elements diagnosis", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 1120707 (3 October 2019); https://doi.org/10.1117/12.2526287

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