Cure Monitoring and SHM of Carbon Fiber Reinforced Polymer Part II : Multi-Physical Correlations

Abstract : This article concerns the on-line monitoring of the manufacturing of composite materials using an ad-hoc instrumentation (based on electrical impedance measurements) considering the material it-self as a sensor. The material (made of T700 carbon /M21 epoxy prepegs) is here used as a sensor but could be also used as an actuator. Furthermore the instrumentation was developed to stay in the heart of the structure for SHM purpose. It is proposed to measure the changes in the electrical impedance of the composite material during curing. The changes of the resistance Rp and the capacitance Cp during curing are then correlated to rheological parameters linked to the progress of the curing reaction. The present paper exposes the estimation of electrical and rheological properties of the material using the measurements of Rp according to a specific curing cycle.
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Submitted on : Tuesday, July 8, 2014 - 10:05:07 AM
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Sonia Sassi, Philippe Marguerès, Thierry Camps, Mahamadou Mounkaila, Philippe Olivier. Cure Monitoring and SHM of Carbon Fiber Reinforced Polymer Part II : Multi-Physical Correlations. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01020397⟩

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