Abstract
Prognosis of the Remaining Useful Life (RUL) of a structure from Structural Health Monitoring data is the ultimate level in the SHM hierarchy. Reliable prognostics are key to a Condition Based Maintenance paradigm for aerospace systems and structures. In the present work, we propose a methodology for RUL prognosis of generic aeronautical elements i.e. single stringered composite panels subjected to compression/compression fatigue. Strain measurements are utilized in this direction via FBG sensors bonded to the stiffener feet. The strain data collected during the fatigue life are processed and used for the RUL prognosis. In order to accomplish this task, it is essential to produce Health Indicators (HIs) out of raw strain that can properly capture the degradation process. To create such HIs a new pre/post-processing technique is employed and a variety of different HIs are developed. The quality of the HIs can enhance the performance of the prognostic algorithms, hence a fusion methodology is proposed using genetic algorithms. The resulted fused HI is used for the RUL estimation of the SSCPs. Gaussian processes and Hidden Semi Markov Models are employed for RUL prognosis and their performance is compared. Despite the complexity the raw data we demonstrate the feasibility of successful RUL prognostics in a SHM-data driven approach.
Original language | English |
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Title of host publication | European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 1 |
Editors | Piervincenzo Rizzo, Alberto Milazzo |
Publisher | Springer |
Pages | 244-253 |
Number of pages | 10 |
ISBN (Print) | 9783031072536 |
DOIs | |
Publication status | Published - 2023 |
Event | 10th European Workshop on Structural Health Monitoring, EWSHM 2022 - Palermo, Italy Duration: 4 Jul 2022 → 7 Jul 2022 |
Publication series
Name | Lecture Notes in Civil Engineering |
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Volume | 253 LNCE |
ISSN (Print) | 2366-2557 |
ISSN (Electronic) | 2366-2565 |
Conference
Conference | 10th European Workshop on Structural Health Monitoring, EWSHM 2022 |
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Country/Territory | Italy |
City | Palermo |
Period | 4/07/22 → 7/07/22 |
Bibliographical note
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-careOtherwise 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.
Keywords
- Composite panels
- Fibber Bragg Gratings
- Health Indicators
- RUL prognosis
- Structural Health Monitoring