Characterising metal - CFRP hybrid structures by nondestructive testing methods

In this work an aluminium - thermoplastic - CFRP (Carbon Fibre Reinforced Polymer) hybrid structure is characterised by the comparison of different nondestructive testing methods. Especially the interfaces and the CFRP itself are investigated. It is shown that with active thermography defects in the interface and in the CFRP itself can be detected and determined. The bonding of metal and thermoplastic can be characterised very well by ultrasonic testing with electromagnetic acoustic transducers (EMAT).