The use of an embedded chirped fibre Bragg grating sensor to monitor disbond initiation and growth in adhesively bonded composite/metal single lap joints
| Autor: | Graham T. Reed, J. Palaniappan, Swee Chuan Tjin, T.F. Capell, A.D. Crocombe, A.M. Thorne, Stephen L. Ogin, Lipi Mohanty |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Composite number Glass fiber chemistry.chemical_element Fibre-reinforced plastic Atomic and Molecular Physics and Optics Lap joint Optics Fiber Bragg grating chemistry Aluminium visual_art Aluminium alloy visual_art.visual_art_medium Adhesive Composite material business |
| Zdroj: | Journal of Optics A: Pure and Applied Optics. 9:S40-S44 |
| ISSN: | 1741-3567 1464-4258 |
| Popis: | Chirped fibre Bragg grating (CFBG) sensors embedded within glass fibre reinforced plastic (GFRP) adherends have been used to monitor disbond initiation and growth in an adhesively bonded GFRP/aluminium alloy single lap joint. The elevated temperature curing of the adhesive used in the manufacture of the joint leads to thermal strains being generated within the GFRP and aluminium adherends. Disbond initiation and growth between the adherends during fatigue cycling causes a relaxation of the residual thermal strains within the composite adherend and perturbations (peaks or dips) in the reflection spectra from the CFBG sensor. These perturbations can be used, when the joint is unloaded, to monitor both the initiation of a disbond in the joint and to monitor the growth of the disbond with fatigue cycling. |
| Databáze: | OpenAIRE |
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