Online monitoring of surface cracks and delaminations in carbon fiber/epoxy composites using silver nanoparticle based ink
Advanced Manufacturing: Polymer & Composites Science, 3 (2017), 3, S. 110-119
Taylor & Francis Online
In this study, we present an online-monitoring approach using silver nanoparticle based ink on carbon fiber reinforced plastics (CFRP). After production of CFRP plates in a prepreg autoclave process and printing conductive paths on the material, we investigate the conductive paths of printed silver nanoparticle-based ink on CFRP by light microscopy. Mechanical tests with simultaneous electrical resistance measurements demonstrate the possibility to detect particular modes of failure with samples specifically designed to promote inter-fiber failures and delaminations under bending. Delaminations can be detected and localized inside the material by electrical through-thickness measurements and resistance measurements of the conductive paths allow for surface crack detection.
structural health monitoring
Online monitoring of surface cracks and delaminations in carbon fiber epoxy composites using silver nanoparticle based ink.pdf