Online monitoring of surface cracks and delaminations in carbon fiber/epoxy composites using silver nanoparticle based ink

Till Augustin, Danny Grunert, Hauke H. Langner, Vico Haverkamp & Bodo Fiedler
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...
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