·Table of Contents
·Materials Characterization and testing

Ultrasonic Testing of Composites - From laboratory Research to In-field Inspections

W. Hillger DLR Braunschweig, Ing. Büro Dr. Hillger, Germany
E-mail: Wolfgang.Hillger@t-online.de



1. Introduction

2. Mobile Ultrasonic Inspection System "MUSE"

3. Air coupled ultrasonic testing

4. Ultrasonic system AirTech 4000

5. Comparison between water and air-coupling

6. One-side-testing with air coupling

6. Summary

7. References

  1. Hillger, W.: Ultrasonic imaging of internal defects in CFPRP-Components, 6th European Conference on Non Destructive Testing. Conference Proc. part 1, (1994) pp. 449-453
  2. Hillger, W. : Ultrasonic imaging of defects in Sandwich Composites from laboratory research to infield inspections, 7 th European Conference on Non- Destructive Testing Copenhagen, 26-29 May 1998, Conf. Proc., pp. 88-94
  3. Hillger, W., Friederichs, B.: Ultrasonic Inspection of the Helicopter EH 101 Tail Unit, Brite Euram Project No. BE-5781, Document No. DAMTOS-WP-503-1.1/DLR
  4. Hillger,W.: Ultrasonic PC- boards for different applications, 7 th ECNDT 1998, Copenhagen, Conf. Proc.
  5. Grandia, W.A.; Fortunko, S.M.:NDE Applications of Air-Coupled Ultrasonic Transducers, 1995 IEEE International Ultrasonic Symposium Seattle, Washington, Conf. Proc.,1995, S. 697-709.
  6. W. Gebhardt, W. Hillger, P. Kreier: Airborne Ultrasonic Probes: Design, Fabrication, Application, 7. ECNDT, Kopenhagen, 26-29 Mai, 1998
  7. Hillger,W.: Optimization of ultrasonic pulse parameters for DAMTOS honeycomb sandwich structures, Report DAMTOS-WP-504/1.1/DLR,
  8. M. Castaings and P. Cawley: The generation, propagation, and detection of Lamb waves in plates using air-coupled ultrasonic tranducers, J. Acoust. Am. 100 (5) Nov. 1996, pp. 3070-3077

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