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Using nondestructive testing methods to characterise production-induced defects in a metal-CFRP hybrid structure

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

Fulltext urn:nbn:de:0011-n-3918044 (424 KByte PDF)
MD5 Fingerprint: b4d228089412b10f3015806b9e5e7d86
Created on: 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
Conference Paper, Electronic Publication
Fraunhofer IZFP ()
nondestructive testing; thermography; EMAT

In this work different nondestructive testing methods, such as active and passive thermography as well as ultrasonic with special probes, so-called EMAT`s (ElectroMagnetic AcousticTransducer) will be applied for the characterisation of a metal-CFRP (Carbon Fibre Reinforced Polymer) hybrid structure. To validate these testing methods, different kinds of artificial defects are inserted into the hybrid structure. It is shown that active thermography is very suitable to detect the artificial inserted defects not only in the hybrid structure but also in the CFRP structure itself. Furthermore the bonding between metal and the polymer is characterised very well. Likewise CFRP samples are investigated by passive thermography while being mechanically loaded through tensile or fatigue tests to give a predication about the influence of the defects on the mechanical properties (effects of defects).Finally an outlook on an optimised geometry of the hybrid structure as well as on further excitation methods for active thermography is given.