NDT.net - February 2003, Vol. 8 No.2

DEFECT-SELECTIVE IMAGING BY NON-LINEAR SCANNING VIBROMETRY AND BY NON-LINEAR AIR-COUPLED ULTRASOUND INSPECTION

Klaus Pfleiderer, Nils Krohn, Rainer Stoessel, Gerd Busse
(Institute for Polymer Testing and Polymer Science -Department of Non-Destructive Testing-,
University of Stuttgart, Germany)
(www.ikp.uni-stuttgart.de)
Paper presented at the 8th ECNDT, Barcelona, June 2002

Abstract

Introduction

Theory

Non-linear scanning vibrometry

Smart Structures

Ceramics

Fibre reinforced ceramics

Non-linear air-coupled ultrasound inspection

Conclusion

Acknowledgements

References

  1. J. M. Richardson, “Harmonic generation at an unbonded interface “– I. Planar interface between semi-infinite elastic media, Int. J. Engng. Sci., Vol. 17, Pergamon Press (1979), pp. 73-85
  2. I. Y. Solodov, R. Maev, “Overview of opportunities for non-linear acoustic applica- tions in material characterization and NDE”, Proceedings „Emerging Technologies in NDT“ 2nd International Conference, Athens 24-26 Mai 1999, Balkema, Rotterdam, pp. 137-144
  3. M. F. Hamilton “Fundamentals and applications of non-linear acoustics”, In: Non- linear wave propagation in mechanics – AMD-77, The American Society of Mechanical Engineers, New York (1986)
  4. Y. Zheng, R. Maev, I. Y. Solodov, “Non-linear acoustic applications for material char- acterization”, A review in Canadian Journal of Physics, Vol. 77 No. 12 (1999), pp. 927- 967
  5. K. R. McCall, R. A Guyer, “Equation of state and wave propagation in hysteretic non- linear elastic materials”, J. of Geophys. Research, Vol. 99, No. B12 (1994), pp. 23887-23897
  6. R. Barrett, “Aerospace Smart Structures the Coming Revolution”, paper presented at the 34th Aerospace Sciences Meeting and Exhibit, Reno, (1996).
  7. K. Pfleiderer, N. Krohn, G. Busse, “Zerstörungsfreie Prüfung adaptiver Strukturen aus Keramik-Matrix-Verbundwerkstoffen“, DGM-Tagung: Verbundwerkstoffe und Werkstoffverbunde 2001. B. Wielage, G. Leonhardt, Wiley-VCH Verlag GmbH, Weinheim, 2001, pp. 309-315
  8. R. Stoessel, N. Krohn, K. Pfleiderer, G. Busse, “Air-coupled ultrasound inspection of various materials”, Ultrasonics International UI 01, July 3-5, Delft, (2001), forthcoming

© NDT.net - info@ndt.net |Top|