Abstract
The influence of a delamination on the resonance frequencies of laminated composite beam is investigated. A model, proposed by Mujumdar and Suryanarayan [Mujumdar PM, Suryanarayan S. Flexural vibrations of beams with delamination. J Sound Vib 1988;125(3):441–61], of the dynamic properties of delaminated isotropic beams is extended to anisotropic laminated beams. Parameter studies show that the resonance frequencies are a function of both delamination parameters (location and size) and laminate lay-up. Experimental and analytical resonance frequencies for undamaged and delaminated test samples show good agreement. The resonance frequencies of carbon-PEI laminated cantilever beams were measured using embedded fibre Bragg grating strain sensors. High frequency measurements were performed by using a slope-filter based interrogator.
Original language | Undefined |
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Pages (from-to) | 2418-2424 |
Journal | Composites science and technology |
Volume | 68 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2008 |
Keywords
- IR-58794
- Delamination
- METIS-254043
- Smart materials
- Non-destructive testing