Entire Life Time Monitoring of Filament Wound Composite Cylinders Using Bragg Grating Sensors: II. Process Monitoring |
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| Authors: | H. Hernández-Moreno F. Collombet B. Douchin D. Choqueuse P. Davies J. L. González Velázquez |
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| Affiliation: | (1) INSA, UPS, Mines Albi, ISAE; ICA (Institut Clément Ader), Université de Toulouse, 133c, avenue de Rangueil, 31077 Toulouse, France;(2) Instituto Politécnico Nacional, ESIME Unidad Ticomán, Av. Ticomán No. 600, Col. San José Ticomán, 07340 México D. F., México;(3) IFREMER Materials & Structures group, Brest Centre, BP70, 29280 Plouzané, France;(4) Instituto Politécnico Nacional, ESIQIE, Unidad Profesional Adolfo López Mateos, Edificio 8, Zacatenco, C.P. 07738 México D. F., México |
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| Abstract: | This article is the second of a series of three papers concerning monitoring of filament wound cylinders using Bragg gratings. In this second part, the tooling presented in Part I is used to embed gratings and thermocouples in filament wound glass reinforced epoxy composite cylinders during fabrication. Bragg grating strain was obtained from wavelength and temperature response, by a calibration technique described here. Results from tests on five cylinders show the Bragg grating’s capability to monitor strain evolution during fabrication, and the capacity to detect several phenomena occurring during cure is established, in addition to quantifying the initial material condition of the cylinder before it enters service. |
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| Keywords: | Smart materials Residual stress Non-destructive testing Filament winding |
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