Probability of Delamination Detection for CFRP DCB Specimens Using Rayleigh Distributed Optical Fiber Sensors

Probability of Delamination Detection for CFRP DCB Specimens Using Rayleigh Distributed Optical Fiber Sensors

Falcetelli, F. (TU Delft Structural Integrity & Composites; University of Bologna)
Cristiani, D.L.M. (TU Delft Structural Integrity & Composites; Politecnico di Milano)
Yue, N. (TU Delft Structural Integrity & Composites)
Sbarufatti, Claudio (Politecnico di Milano)
Sante, Raffaella Di (University of Bologna)
Zarouchas, D. (TU Delft Structural Integrity & Composites)

Rizzo, Piervincenzo (editor)
Milazzo, Alberto (editor)

2023

Distributed Optical Fiber Sensors (DOFS) show several inherent benefits with respect to conventional strain-sensing technologies and represent a key technology for Structural Health Monitoring (SHM). Despite the solid motivation behind DOFS-based SHM systems, their implementation for real-time structural assessment is still unsatisfactory outside academia. One of the main reasons is the lack of rigorous methodologies for uncertainty quantification, which hinders the performance assessment of the monitoring system. The concept of Probability of Detection (POD) should function as the guiding light in this process, but precautions must be taken to apply this concept to SHM, as it has been originally developed for Non-Destructive Evaluation techniques. Although DOFS have been the object of numerous studies, a well-established methodology for their performance evaluation in terms of PODs is still missing. In the present work, the concept of Probability of Delamination Detection (POD²) is proposed for a DOFS network; Carbon Fiber-Reinforced Polymers (CFRP) Double-Cantilever Beam (DCB) specimens equipped with DOFS have been tested under static loading, and the strain patterns along with the relative observed delamination size have been collected to generate an adequate database for the POD analysis, suggesting a reference methodology to quantify the performance of DOFS for delamination detection.

Carbon fiber-reinforced polymers
Delamination
Distributed optical fiber sensors
Probability of detection
Structural health monitoring

http://resolver.tudelft.nl/uuid:dc294703-09a0-4b9a-85a5-9c7f10227ca9

https://doi.org/10.1007/978-3-031-07258-1_92

Springer

2023-07-01

9783031072574

European Workshop on Structural Health Monitoring - EWSHM 2022 - Volume 2

10th European Workshop on Structural Health Monitoring, EWSHM 2022, 2022-07-04 → 2022-07-07, Palermo, Italy

Lecture Notes in Civil Engineering, 2366-2557, 254 LNCE

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2023 F. Falcetelli, D.L.M. Cristiani, N. Yue, Claudio Sbarufatti, Raffaella Di Sante, D. Zarouchas