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Continuous wave terahertz inspection of glass fiber reinforced plastics with semi-automatic 3-D image processing for enhanced defect detection

Book Contribution - Book Chapter Conference Contribution

The increasing industrial application of fiber reinforced plastics demands developments of new techniques for non-destructive testing. The sub-terahertz frequency band has proved to be a noteworthy option for this task. Composite structures or laminates can be inspected for foreign inclusions, delaminations, debonds, etc., using sub-terahertz sensors during the manufacturing process or maintenance. In this contribution we present our results using a frequency modulated continuous wave terahertz imaging system in comparison with conventional NDT measurements on several different GFRP samples. Thereby a semi-automatic terahertz image processing approach for enhanced defect detection is applied.

Book: 2014 IEEE MTT-S International Microwave Symposium, IMS 2014
Pages: 1-4
ISBN:9781479938698
Publication year:2014
Keywords:fiber reinforced plastics, FMCW, image processing, non-destructive testing, terahertz imaging