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Advanced Acoustic Emission Techniques for Failure Analysis in concrete

Stefan Köppel
Institute of Structural Engineering (IBK), Swiss Federal Institute of Technology (ETH) in Zurich,
Tel. ++41 1 633 31 44, Fax. ++41 1 633 10 64, Email : koeppel@ibk.baug.ethz.ch.
Christian Grosse
Institute of Construction Materials (IWB), University of Stuttgart,
Tel. ++49 711 6856786, Fax. ++49 711 6856797, Email : grosse@iwb.uni-stuttgart.de
Contact

Summary

Introduction

Localization of AE sources

Fig 1: AE event #401 recorded at eight transducers. Example of the arrival time determination (vertical lines) using WinPecker. The detail-window in the upper right corner gives better control over the picking process. The result of the hypocenter determination (in meter) is shown in the status row at the bottom [6].

Experiments

Characterization of AE sources using moment tensor inversion

Conclusions

Acknowledgements

References

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  2. Dahm, T.: Relative moment tensor inversion based on ray theory: theory and synthetic tests. Geophys. J. Int. 124 (1996), pp. 245-257.
  3. Grosse, C.: Grundlagen der Inversion des Momententensors zur Analyse von Schallemissions-quellen. In: "Werkstoffe und Werkstoffprüfung", Festschrift zum 60. Geb. von Prof. Reinhardt (Hrsg. C. Grosse), Libri BOD (1999), pp. 82-105.
  4. Grosse, C.; Weiler, B.; Reinhardt, H.: Relative moment tensor inversion applied to concrete fracture tests. J. of Ac. Emission 14 (1996), No. 3-4, pp. 74-87.
  5. Grosse, C.; Reinhardt, H.; Dahm, T.: Localization and classification of fracture types in concrete with quantitative acoustic emission measurement techniques. NDT&E International, Vol. 30 (1997), No. 4, pp. 223-230.
  6. Grosse, C.; Reinhardt, H.: Entwicklung eines Algorithmus zur automatischen Lokalisierung von Schallemissionsquellen. Die Materialprüfung 41 (1999), pp. 342-347.
  7. Grosse, C.: WinPecker - Programm zur vollautomatischen dreidimensionalen Lokalisierung von Schallemissionsquellen. 12. Kolloquium Schallemission, DGZfP Berichtsband BB 72 (2000), pp. 191-204.
  8. Köppel, S.; Vogel, T.: Localization and identification of cracking mechanisms in reinforced concrete using acoustic emission analysis. Proc. 4. Int. Conf. on Bridge Management, Surrey (2000), pp 88-95.
  9. Landis, E.; Ouyang, C.; Shah, S.P.: Automated determination of first p-wave arrival and acoustic emission source location. J. of Ac. Emission 10 (1991), No. 1-2, pp. 97-103.
  10. Landis, E.; Shah S.P.; Signal analysis for quantitative acoustic emission testing. Nondestructive Testing Methods; ASCE; New York (1995), pp. 45-56.
  11. Ohtsu, M.; Shigeishi, M.; Iwase, H.; Koyanagi, W.: Determination of crack location, type and orientation in concrete structures by acoustic emission. Mag. of Concrete Research 43 (1991), No. 155, pp. 127-134.
  12. Ohtsu, M.; Okamoto, T.; Yuyama, S.: Moment tensor analysis of acoustic emission for cracking mechanisms in concrete. ACI Structural Journal 95 (1998), No. 2, pp. 87-95.
  13. Oncescu, L.; C. Grosse:HYPO AE - A program for the localization of hypocenters of acoustic emissions. Software für PC und Workstation, Rev. 2.0 (1996), 15 pp.

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