Damage Diagnostics of a Composite Single-Stiffener Panel Under Fatigue Loading Utilizing SHM Data Fusion

Agnes A.R. Broer, Georgios Galanopoulos, Dimitrios Zarouchas, Theodoros Loutas, Rinze Benedictus

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

A case study is presented in which the first steps are made towards the development of a structural health monitoring (SHM) data fusion framework. For this purpose, a composite single-stiffener panel is subjected to compression-compression fatigue loading (R = 10). The carbon-epoxy panel contains an artificial disbond of 30 mm, which was created using a Teflon insert during manufacturing and placed between the skin and the stiffener foot. Under the applied fatigue load, the disbond is expected to grow and its propagation is monitored using two SHM techniques, namely acoustic emission (AE) and Rayleigh-scattering based distributed fiber optic strain sensing. Four AE sensors are placed on the skin, thereby allowing for disbond growth detection and localization. On each stiffener foot, fiber optic sensors are surface-bonded to monitor the growth of the disbond under the applied fatigue loading. The distributed strain measurements are used to localize and monitor the disbond growth. The strength of each technique is utilized by fusing the data from the AE sensors and the fiber optic sensors. In this manner, a data-driven approach is presented in which a data fusion of the different techniques allows for monitoring the damage in the stiffened panel on multiple SHM levels, including disbond growth detection and localization.

Original languageEnglish
Title of host publicationEuropean Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
EditorsPiervincenzo Rizzo, Alberto Milazzo
PublisherSpringer
Pages616-625
Number of pages10
ISBN (Print)9783030645939
DOIs
Publication statusPublished - 2021
EventEuropean Workshop on Structural Health Monitoring, EWSHM 2020 -
Duration: 6 Jul 20209 Jul 2020

Publication series

NameEuropean Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 1
Volume127
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceEuropean Workshop on Structural Health Monitoring, EWSHM 2020
Period6/07/209/07/20

Keywords

  • Acoustic emission
  • Composite single-stiffener panel
  • Data fusion
  • Distributed strain sensing
  • Fatigue loading

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