Memorias de investigación
Research Publications in journals:
Buckling detection of an omega-stiffened aircraft composite panel using distributed fibre optic sensors
Year:2018

Research Areas
  • Mechanical aeronautics and naval engineering

Information
Abstract
A novel approach to detect and locate buckling from distributed optical sensors is proposed in this paper by means of a second derivative analysis of the strain measurements. This methodology demonstrates that nonlinear events are prone to significant changes in the full-field strain shape obtained using a dense distributed optical network, whose measurements were processed earlier using a Savitzy-Golay filter. Moreover, these nonlinear events can be identified without needing to know the load step value. A buckling test was conducted in a stiffened composite panel representative of a cockpit fuselage skin stiffened by two omega stiffeners plus two fastened metallic frames. A distributed fibre optic network was bonded to the flat panel side in a crooked configuration. The panel was also instrumented using conventional back-to-back strain gauge rosettes and a high-speed-camera to establish a qualitative comparison with the distributed strain contour map. Through the proposed methodology, the detection and location of the global and local buckling were successfully conducted.
International
Si
JCR
Si
Title
Thin-Walled Structures
ISBN
0263-8231
Impact factor JCR
2,829
Impact info
Datos JCR del año 2016
Volume
10.1016/j.tws.2018.08.024
Journal number
132
From page
375
To page
284
Month
SIN MES
Ranking
Participants

Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"