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

Fabian Friederich, Edison Cristofani, Carsten Matheis, Joachim Jonuscheit, Rene Beigang, Marijke Vandewal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publication2014 IEEE MTT-S International Microwave Symposium, IMS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479938698
DOIs
Publication statusPublished - 2014
Event2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States
Duration: 1 Jun 20146 Jun 2014

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2014 IEEE MTT-S International Microwave Symposium, IMS 2014
Country/TerritoryUnited States
CityTampa, FL
Period1/06/146/06/14

Keywords

  • FMCW
  • fiber reinforced plastics
  • image processing
  • non-destructive testing
  • terahertz imaging

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