A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue

Dimitrios Milanoski; Georgios Galanopoulos; Agnes Broer; Dimitrios Zarouchas; Theodoros Loutas

doi:10.1007/978-3-030-64594-6_61

A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue

Dimitrios Milanoski^*, Georgios Galanopoulos, Agnes Broer, Dimitrios Zarouchas, Theodoros Loutas

^*Corresponding author for this work

Structural Integrity & Composites

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

7 Citations (Scopus)

28 Downloads (Pure)

Abstract

Real-time Structural Health Monitoring (SHM) of aeronautical structural components is a technology persistently investigated the last years by researchers and engineers to potentially reduce the cost and/or implementation of scheduled maintenance tasks. To this end, various types of sensors have been proposed to serve this role, e.g. piezoelectric, acoustic emission, and strain sensors. In the present paper, a strain-based SHM methodology is proposed for skin/stringer disbond propagation health monitoring. Fiber-optic strain sensors with engraved Bragg gratings are utilized in order to evaluate the propagation of artificially-induced disbonds at single-stringered composite panels. The specimens are subjected to a block loading compression-compression fatigue spectrum. Longitudinal static strains are periodically acquired during quasi-static loadings every 500 cycles. A Health Indicator (HI), based on strains received from the stringer’s feet, is proposed and utilized to monitor the disbond growth. The evolution of this indicator is experimentally monitored throughout the lifespan of the specimens. The present paper verifies and consolidates via actual fatigue experiments the potential of the proposed static-strain based HI developed from numerical data in our previous work.

Original language	English
Title of host publication	European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
Editors	Piervincenzo Rizzo, Alberto Milazzo
Publisher	Springer
Pages	626-635
Number of pages	10
ISBN (Print)	9783030645939
DOIs	https://doi.org/10.1007/978-3-030-64594-6_61
Publication status	Published - 2021
Event	European Workshop on Structural Health Monitoring, EWSHM 2020 - Duration: 6 Jul 2020 → 9 Jul 2020

Publication series

Name	European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
Volume	127
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	European Workshop on Structural Health Monitoring, EWSHM 2020
Period	6/07/20 → 9/07/20

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-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.

Keywords

Composite stiffened panels
Fatigue testing
Fiber Bragg grating sensors
Post-buckling
Skin-to-stringer disbond growth
Strain-based SHM

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10.1007/978-3-030-64594-6_61

Milanoski2021_Chapter_AStrain_BasedHealthIndicatorFoFinal published version, 1.49 MB

Cite this

Milanoski, D., Galanopoulos, G., Broer, A., Zarouchas, D., & Loutas, T. (2021). A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue. In P. Rizzo, & A. Milazzo (Eds.), European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1 (pp. 626-635). (European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1; Vol. 127). Springer. https://doi.org/10.1007/978-3-030-64594-6_61

Milanoski, Dimitrios ; Galanopoulos, Georgios ; Broer, Agnes et al. / A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue. European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1. editor / Piervincenzo Rizzo ; Alberto Milazzo. Springer, 2021. pp. 626-635 (European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1).

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title = "A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue",

abstract = "Real-time Structural Health Monitoring (SHM) of aeronautical structural components is a technology persistently investigated the last years by researchers and engineers to potentially reduce the cost and/or implementation of scheduled maintenance tasks. To this end, various types of sensors have been proposed to serve this role, e.g. piezoelectric, acoustic emission, and strain sensors. In the present paper, a strain-based SHM methodology is proposed for skin/stringer disbond propagation health monitoring. Fiber-optic strain sensors with engraved Bragg gratings are utilized in order to evaluate the propagation of artificially-induced disbonds at single-stringered composite panels. The specimens are subjected to a block loading compression-compression fatigue spectrum. Longitudinal static strains are periodically acquired during quasi-static loadings every 500 cycles. A Health Indicator (HI), based on strains received from the stringer{\textquoteright}s feet, is proposed and utilized to monitor the disbond growth. The evolution of this indicator is experimentally monitored throughout the lifespan of the specimens. The present paper verifies and consolidates via actual fatigue experiments the potential of the proposed static-strain based HI developed from numerical data in our previous work.",

keywords = "Composite stiffened panels, Fatigue testing, Fiber Bragg grating sensors, Post-buckling, Skin-to-stringer disbond growth, Strain-based SHM",

author = "Dimitrios Milanoski and Georgios Galanopoulos and Agnes Broer and Dimitrios Zarouchas and Theodoros Loutas",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – 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. ; European Workshop on Structural Health Monitoring, EWSHM 2020 ; Conference date: 06-07-2020 Through 09-07-2020",

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Milanoski, D, Galanopoulos, G, Broer, A , Zarouchas, D & Loutas, T 2021, A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue. in P Rizzo & A Milazzo (eds), European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1. European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1, vol. 127, Springer, pp. 626-635, European Workshop on Structural Health Monitoring, EWSHM 2020, 6/07/20. https://doi.org/10.1007/978-3-030-64594-6_61

A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue. / Milanoski, Dimitrios; Galanopoulos, Georgios; Broer, Agnes et al.
European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1. ed. / Piervincenzo Rizzo; Alberto Milazzo. Springer, 2021. p. 626-635 (European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1; Vol. 127).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue

AU - Milanoski, Dimitrios

AU - Galanopoulos, Georgios

AU - Broer, Agnes

AU - Zarouchas, Dimitrios

AU - Loutas, Theodoros

N1 - 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.

PY - 2021

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AB - Real-time Structural Health Monitoring (SHM) of aeronautical structural components is a technology persistently investigated the last years by researchers and engineers to potentially reduce the cost and/or implementation of scheduled maintenance tasks. To this end, various types of sensors have been proposed to serve this role, e.g. piezoelectric, acoustic emission, and strain sensors. In the present paper, a strain-based SHM methodology is proposed for skin/stringer disbond propagation health monitoring. Fiber-optic strain sensors with engraved Bragg gratings are utilized in order to evaluate the propagation of artificially-induced disbonds at single-stringered composite panels. The specimens are subjected to a block loading compression-compression fatigue spectrum. Longitudinal static strains are periodically acquired during quasi-static loadings every 500 cycles. A Health Indicator (HI), based on strains received from the stringer’s feet, is proposed and utilized to monitor the disbond growth. The evolution of this indicator is experimentally monitored throughout the lifespan of the specimens. The present paper verifies and consolidates via actual fatigue experiments the potential of the proposed static-strain based HI developed from numerical data in our previous work.

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KW - Post-buckling

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KW - Strain-based SHM

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Milanoski D, Galanopoulos G, Broer A , Zarouchas D, Loutas T. A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue. In Rizzo P, Milazzo A, editors, European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1. Springer. 2021. p. 626-635. (European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1). doi: 10.1007/978-3-030-64594-6_61

A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

ReMAP: Real-time Condition-based Maintenance for Adaptive Aircraft Maintenance Planning

Cite this

A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Projects

ReMAP: Real-time Condition-based Maintenance for Adaptive Aircraft Maintenance Planning

Cite this