Multifunctional Glass-Fiber Composite with Self-Monitoring Capability

2nd International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料工程

Fabriani, Federico^1 ; Previti, Roberto^1 ; Lanzara, Giulia^1

Engineering Department, University of Rome, Roma TRE, Rome

00146, Italy^1

关键词: Charge separations;    Dynamic condition;    Glass fiber composites;    Micro-scale structures;    Multi-layered composites;    Polyvinylidene difluoride;    Randomly distributed;    Unique features;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/544/1/012057/pdf
DOI  :  10.1088/1757-899X/544/1/012057

来源: IOP

【 摘 要 】

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.