Descripción
|
|
---|---|
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. | |
Internacional
|
Si |
JCR del ISI
|
Si |
Título de la revista
|
Thin-Walled Structures |
ISSN
|
0263-8231 |
Factor de impacto JCR
|
2,829 |
Información de impacto
|
Datos JCR del año 2016 |
Volumen
|
|
DOI
|
10.1016/j.tws.2018.08.024 |
Número de revista
|
132 |
Desde la página
|
375 |
Hasta la página
|
284 |
Mes
|
SIN MES |
Ranking
|