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    Item type:Publication, Access status: with files ,
    Online monitoring of surface cracks and delaminations in carbon fiber/epoxy composites using silver nanoparticle based ink
    (Taylor & Francis, 2017-08-12)
    Augustin, Till
    ;
    Grunert, Danny
    ;
    Langner, Hauke H.
    ;
    Haverkamp, Vico
    ;
    Fiedler, Bodo
    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.
    Publicationtype: Journal Article
    Scopus© Citations 10  415  872
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    Item type:Publication, Access status: without files ,
    Online-monitoring of carbon fiber reinforced plastics using silver nanoparticle based ink
    (2016-06)
    Augustin, Till
    ;
    Langner, Hauke H.
    ;
    Haverkamp, Vico
    ;
    Fiedler, Bodo
    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 conducting paths on the material, we investigate the interface of CFRP and conducting paths of printed silver nanoparticle based ink by light microscopy. Mechanical tests with simultaneous electrical resistance measurement demonstrate the applicability of the presented method for a structural health-monitoring system. Delaminations can be detected and localized inside of the material by electrical through thickness measurements. Furthermore, resistance measurements of the conductive paths allow for surface crack detection and might be established as alternative method to other structural health-monitoring methods.
    Publicationtype: Conference Paper
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