Automated Laser Ultrasonic NDT of Carbon Fibre Reinforced Polymer Parts

Martin Gärtner, Bernhard Reitinger, Wolfgang Haderer, Bernhard Plank, Johann Kastner, Jürgen Gruber, Günther Mayr, James Vicki, Peter Burgholzer, Edgar Scherleitner

Publikation: KonferenzbeitragPapier

Abstract

We present the application and the results of laser ultrasonic scanning systems on fibre-based composites and the current state of development of this method at RECENDT. First we benchmark this technique with X-ray tomography and infrared thermography and then show a robotized scanning system dedicated for the aerospace industry. The laser ultrasonic systems use a 532 nm Nd:YAG pulsed laser for excitation and a 1064 nm two-wave-mixing interferometer for detection. The fibre coupling enables a flexible scan head for the automation of the system. The laser ultrasonic technique is demonstrated on a sample with artificial defects, such as PTFE-foils as a delamination source. The results are compared with reference NDT-methods such as X-ray computed tomography and active thermography, and the individual advantages and disadvantages are discussed. Further, a robotised scanning system will be presented, which has been developed under the H2020 Clean Sky 2 project ACCURATe. The sampling rate of this system is 400 Hz, which enables large parts to be inspected at the required speed. A large aircraft part made of carbon fibre reinforced polymer was manufactured and investigated for real world defect measurements.
OriginalspracheEnglisch
Seitenumfang10
PublikationsstatusVeröffentlicht - 2020
VeranstaltungInternational Symposium on NDT in Aerospace (2020) - Williamsburg, Virgina, USA/Vereinigte Staaten
Dauer: 5 Okt 20207 Okt 2020
http://www.ndt2020.utcdayton.com/

Konferenz

KonferenzInternational Symposium on NDT in Aerospace (2020)
Land/GebietUSA/Vereinigte Staaten
OrtWilliamsburg, Virgina
Zeitraum05.10.202007.10.2020
Internetadresse

Schlagwörter

  • Laser ultrasound
  • active infrared thermography
  • X-ray computed tomography
  • time of flight (TOF)
  • aerospace
  • carbon fibre reinforced polymer (CFRP)
  • NDT
  • composite

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