Composites that are capable to provide multiple functionalities represent a fundamental step toward the realization of light weight, high performing and autonomous materials. In this paper a piezoelectric polyvinylidene difluoride (PVDF) electrospun fabric is investigated as sensing layer for making a self-monitoring composite material. The micro-scale structure of the fabric consists of an aggregation of micro-fibers that are randomly distributed forming a porous film that allows a full absorption of the epoxy matrix as required for multi-layered composites. The application of a force on the composite induces a charge separation within the atomic structure of the embedded PVDF fabric generating an electrostatic output voltage. These unique features allowed to continuously monitor vibrations under dynamic conditions.
Fabriani, F., Previti, R., Lanzara, G. (2019). Multifunctional glass-fiber composite with self-monitoring capability. In IOP Conference Series: Materials Science and Engineering (pp.012057). DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND : Institute of Physics Publishing [10.1088/1757-899X/544/1/012057].
Multifunctional glass-fiber composite with self-monitoring capability
Fabriani F.;Lanzara G.
Conceptualization
2019-01-01
Abstract
Composites that are capable to provide multiple functionalities represent a fundamental step toward the realization of light weight, high performing and autonomous materials. In this paper a piezoelectric polyvinylidene difluoride (PVDF) electrospun fabric is investigated as sensing layer for making a self-monitoring composite material. The micro-scale structure of the fabric consists of an aggregation of micro-fibers that are randomly distributed forming a porous film that allows a full absorption of the epoxy matrix as required for multi-layered composites. The application of a force on the composite induces a charge separation within the atomic structure of the embedded PVDF fabric generating an electrostatic output voltage. These unique features allowed to continuously monitor vibrations under dynamic conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
