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Ramos, Ca
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Publications (5/5 displayed)
- 2011Measurement of dynamic strain using an optic fibre system in adaptive composite laminates with an integrated piezoelectric sensor/actuator
- 2011DESIGN AND EXPERIMENTAL EVALUATION OF A COMPOSITE STRAIN ROSETTE USING FIBER BRAGG GRATINGcitations
- 2008Actuator Capabilities of Piezoelectric Devices Embedded in Composite Laminate
- 2006The signal characteristics of the spectral response of Bragg grating sensor embedded in composite laminated after the cure process
- 2005Simultaneous measurement of pressure and temperature using single mode optical fibres embedded in a hybrid composite laminatedcitations
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article
Measurement of dynamic strain using an optic fibre system in adaptive composite laminates with an integrated piezoelectric sensor/actuator
Abstract
This study seeks the development of adaptive composites capable to monitor and actively damp vibrations. In the proposed material, vibrations measurements are performed by an embedded low finesse optical fibre extrinsic Fabry-Perot interferometer, while active damping will be performed by embedded piezoelectric ceramics. This paper focuses on the development of the monitoring procedure. The proposed interrogation procedure for the low finesse optical fibre extrinsic Fabry-Perot interferometer was successfully used to monitor the composite plate when submitted to four-point bending dynamic tests at different frequencies. The embedding of both sensing and actuating components in carbon-fibre reinforced composite laminates is also presented. In the case of the actuator, the efficiency of the embedding process was merely analysed from the capability of the piezoelectric ceramic to monitor dynamic strain of the composite using the PZT piezoelectric inverse effect.