The presented results show that GBS modeling yields reliable results at low computation times. The calculation times are tremendously lower as compared to other methods, which is particularly beneficial at higher frequencies, as of special interest in high resolution NDT of aero engine components. The Gaussian beam results are obtained instantaneously, while the point source superposition results are calculated within three to four minutes on a 3 GHz Intel Xeon PC. This speed-up in calculation time is particularly useful in performing transient calculations. The transient approach is also extremely fast, since it operates in time domain and preserves the computational effciency of the monochromatic approach. A sequence of 50 snapshots -as an example- has been calculated for a spatial discretisation of 200 by 200 points within less than 10 seconds. Differences of this 'pseudotransient' approach in comparison with a frequency domain approach exist in the near-field, since the near-field structure of the monochromatic beam field is conserved. However, relevant evaluations are mostly done in the far-field. Also, the GB module provides a fast apriori evaluation of an inspection situation, while more exact methods can be subsequently applied, if necessary. Finally, the effciency of Prony method in determining new sets of GB coeffcients is beneficial in view of setting up a data base for commercial/standard type transducers. Validation of the GBS approach has been performed with respect to NDT of aeroengine components.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Gaussian beam modeling for commercial transducers applied to aero engine disk inspection


    Additional title:

    Gaussbündelmodellierung für kommerzielle Wandler zum Einsatz bei der Prüfung von Flugzeug-Turbinenscheiben


    Contributors:
    Spies, M. (author)


    Publication date :

    2006


    Size :

    8 Seiten, 5 Bilder, 8 Quellen



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English






    Reliable thermosonic inspection of aero engine turbine blades

    Bolu, G. / Gachagan, A. / Pierce, G. et al. | Tema Archive | 2010


    Aero-engine nacelle and aero-engine

    LIU ZHAO / XU YAN / DING CHEN | European Patent Office | 2022

    Free access