WIT Press


Integrated Active Fibre Composites Elements For Structural Health Monitoring In Glass Fibre Reinforced Laminates

Price

Free (open access)

Paper DOI

10.2495/HPSM040021

Volume

76

Pages

10

Published

2004

Size

556 kb

Author(s)

M. Barbezat, A. J. Brunner, C. Huber, M. Melnykowycz, X. Kornmann & P. Flüeler

Abstract

Active Fibre Composites (AFC) elements consist of piezoelectric ceramic fibres embedded between two interdigitated electrodes in a thermoset polymer matrix. A deformation of the piezoelectric AFC elements by external forces generates a voltage across the electrodes that can be recorded. Acoustic Emission (AE) analysis is a well established method for structural integrity monitoring of composite structures and elements. AFC elements can detect acoustic waves in structural elements analogous to conventional commercial AE sensors. Experimental results using AFC elements as AE sensors integrated into glass fibre reinforced epoxy (GFRP) laminates and polymethyl methacrylate (PMMA) plates

Keywords