Terahertz FMCW Inspection of GFRP Composites: Comparison with Conventional NDT Techniques and Enhanced Defect Detection Capability through Semi-automatic 3-D Image Processing

Conference: GeMiC 2014 - German Microwave Conference
03/10/2014 - 03/12/2014 at Aachen, Germany

Proceedings: ITG-Fb. 246: GeMiC 2014

Pages: 4Language: englishTyp: PDF

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Authors:
Matheis, C.; Wohnsiedler, S.; Ospald, F.; Jonuscheit, J.; Beigang, R. (Fraunhofer IPM, Erwin-Schroedinger-Str., Building 56, 67663 Kaiserslautern, Germany)
Cristofani, E.; Brook, A.; Vandewal, M. (Royal Military Academy, Av. de la Renaissance 30, B-1000 Brussels, Belgium)

Abstract:
A range of composite materials that contain glass fiber reinforced polymers is inspected for various defects such as debonds, delaminations and foreign inclusions with a terahertz FMCW imaging system. The results are evaluated manually and by means of semi-automatic image processing, which enhances the detection rate. Comparison with reference measurements from established NDT techniques shows high defect detectability with the terahertz approach.