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

Journal
Advanced manufacturing: polymer & composites science  
Volume
3
Issue
3
Start Page
110
End Page
119
Citation
Advanced Manufacturing: Polymer & Composites Science, 3 (2017), 3, S. 110-119
Publisher DOI
10.1080/20550340.2017.1362508
Scopus ID
2-s2.0-85035005058
Publisher
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.
Subjects
structural health monitoring
CERP
ink-jet printing
conductive paths
inter-fiber failures
surface cracks
delaminations
DDC Class
620: Ingenieurwissenschaften
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