Abstract
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.
Highlights
Carbon fiber reinforced plastics (CFRP) are widely used in various industries such as aircraft, aerospace, automotive, and wind energy
In this study, we present an onlinemonitoring approach using silver nanoparticle based ink on carbon fiber reinforced plastics (CFRP)
Electrical conductivity and in particular through-thickness electrical conductivity of CFRP varies extremely depending on fiber volume content and size of the inter-laminar polymer layers
Summary
Carbon fiber reinforced plastics (CFRP) are widely used in various industries such as aircraft, aerospace, automotive, and wind energy. 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.
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