P2.9.32 Surface and subsurface FTIR-spectroscopic detection of critical parameters for adhesive bonding of CFRP
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.9 Technology and Application
- R. Galos, J. Kasberger - RECENDT GmbH (Austria)
- 1798 - 1801
The presented work deals with preliminary investigations of contamination conditions prior the bonding procedure of carbon-fiber-reinforced polymer (CFRP) structures. As identified by airplane manufacturers, the monitoring of thermal damages and different contamination scenarios like moisture uptake and release agent and oil residues is required before bonding of CFRP. Here we are using FTIR-spectroscopic measurement systems in the mid infrared (MIR) wavelength region to monitor characteristic spectral features. In order to achieve the goal of monitoring critical quality relevant conditions online preliminary measurements have been performed with a lab setup. Those measurements lead to a profound understanding of the chemo-physical interaction, which is essential for the realization of an industrialsuited optical measurement setup. The experimental results enable the identification of different angles of incidence for distinct test scenarios. The conducted experiments did reveal that moisture uptake inside the bulk material can be monitored very well. Furthermore Skydrol-water- mixture, applied on the surface and thermal degradation caused by oxidation of CFRP samples are contamination scenarios with IR spectroscopic features.