Entire Life Time Monitoring of Filament Wound Composite Cylinders Using Bragg Grating Sensors: I. Adapted Tooling and Instrumented Specimen
- 194 Downloads
This paper is the first of three describing the monitoring of filament wound cylinders using Bragg grating sensors. Part I describes the technological issues and the development of specimens instrumented with embedded gratings and thermocouples. The aim is to monitor the temperature and strain changes during cylinder manufacture (see Part II) and in-service behaviour (see Part III). Specimens are filament wound glass reinforced epoxy composites, so two technological problems have to be solved: one is to collect data during fabrication and the second is to remove the specimen from the mandrel without damaging the sensors. These were accomplished by design of a specially adapted split mandrel and a rotating interface between the filament winding machine and the composite cylinder in fabrication. Immediately after sensor insertion it was possible to monitor the fabrication process, by collecting Bragg grating wavelength and temperature response, using this specially adapted tooling.
KeywordsPolymer-matrix composites (PMCs) Residual/internal stress Non-destructive testing Filament winding
H. Hernández-Moreno wishes to thank the National Council of Science and Technology of Mexico (CONACYT) and the National Polytechnic Institute of Mexico (IPN) for their scholarship sponsorship. The authors thank Messrs. I. Fernandez Hernandez, J. Bauw, F. Afonso, and E. Vargas Rojas for their collaboration during their internship at ICA.
- 1.Collombet, F., Mulle, M., Hernandez Moreno, H., Zitoune, R., Douchin, B., Grunevald, Y.-H.: Benefit from embedded sensors to study polymeric composite structures. To be published in Damage and Fracture Mechanics (1st African InterQuadrennial ICF conference AIQ-ICF2008 Algier, Algeria), Boukharouba et al editor, Springer 2008.Google Scholar
- 3.Sorensen, L., Botsis, J., Gmür, T., Humbert, L.: Bridging tractions in mode I delamination: Measurements and simulations Composites Science and Technology, 2008/12 Vol. 68, Issue 12, p. 2350-2358.Google Scholar
- 5.Stringer, L.G., Hayman, R.J., Hinton, M.J., Badcock, R.A., Wisnom, M.R.: Curing stresses in thick polymer composite components. Part II: Management of residual stresses. Proceedings of ICCM-12 Conference. Paris (France), July, 1999. Ref. CD-ROM paper 861, p. 1-10.Google Scholar
- 7.Mulle, M., Zitoune, R., Collombet, F., Olivier, P., Grunevald, Y.-H.: Thermal expansion of carbon–epoxy laminates measured with embedded FBGS – Comparison with other experimental techniques and numerical simulation. Composites Part A: Applied Science and Manufacturing 38(5), 1414–1424 (2007)CrossRefGoogle Scholar
- 8.Ramos, C.A., de Oliveira, R., Marques, A.T.: Design of an optical fibre sensor patch for longitudinal strain measurement in structures. Mater. Des. (2008). doi: 10.1016/j.matdes.2008.11.008
- 12.Brower, D.V.: Structural properties measurements in deepwater oil and gas fields using an advanced fiber optic sensor monitoring system. SAMPE Journal 41(5), 6–9 (2005)Google Scholar
- 14.Hahn, H.T., Jensen, D.W., Claus, S.J., Pai, S.P., Hipp, P.A.: Structural design criteria for filament-wound composite shells. NASA CR 195125, 1–167 (1994)Google Scholar
- 16.Hernandez-Moreno, H., Douchin, B., Collombet, F., Davies, P.: Precise positioning of unit cells and embedded instrumentation for fabrication and pressure testing of filament wound tubes. Proceedings of ECCM-11, Rhodes (Greece), May 2004. Ref. CD-ROM 321, p.1-10.Google Scholar