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Thermography assisted characterisation of production-induced defects in CFRP and their influence on the mechanical behaviour

: Summa, Jannik; Schwarz, Michael; Bernarding, Simon; Herrmann, Hans-Georg

Volltext urn:nbn:de:0011-n-3918031 (686 KByte PDF)
MD5 Fingerprint: 6afadf8a78f908bdca42dfaf7156a946
Erstellt am: 11.5.2016

Hausmann, J.M. ; Deutsche Gesellschaft für Materialkunde -DGM-:
2. International Conference Euro Hybrid - Materials and Structures 2016. Proceedings : 20.-21. April 2016, Kaiserslautern, Institut für Verbundwerkstoffe
Frankfurt: DGM, 2016
ISBN: 978-3-88355-414-3
International Conference Euro Hybrid - Materials and Structures <2, 2016, Kaiserslautern>
Deutsche Forschungsgemeinschaft DFG
SPP 1712; HE 7079/1-1
Intrinsische Hybridverbunde - Grundlagen der Fertigung, Charakterisierung und Auslegung - Einfluss, Detektion und Vorhersage von Defekten in großserientauglichen Hybridverbunden für Metall/CFK- Leichtbautragstrukturen
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IZFP ()
effects of defects; passive Thermography; mechanical testing

A novel hybrid-joint, suitable to series production, is currently developed. It over comes the gap in stiffness by inserting a thermoplastic element between metal and carbon fiber reinforced polymer (CFRP). The main goal in terms of quality assessment is to characterise the defect-caused damage propagation (effects of defects) by means of destructive and non-destructive testing (ndt) of artificially implemented defects. Assuming that flaws are most-likely to occur within the CFRP, close to the transition zone, first investigations are carried out on the effects of defects in pure CFRP component. Thus artificially implemented defects, i.e. missing roving, gapping, 10° misalignment, pleat and delamination, are characterised by active thermography interms of type, size and location. A subsequent correlation of the mechanical properties under quasi-static tensile tests and fatigue experiments of a defect-free reference and the imperfect samples is carried out. In order to evaluate the damage propagation, the mechanical experiments are complemented by in situ passive thermography.