Growing incorporation of adhesive joints in automotive body production routinely demands development of fast and reliable non-destructive testing methods. The structural geometry of 'metal sheet - structural adhesive - metal sheet' makes it complicated to use the convenient pulse-echo ultrasonic technique. A few algorithms of received signal processing were proposed for elimination of reverberation oscillations, detecting and interpretation of the informative signals. These methods, based on adaptive filtration and correlation analysis, were realised for scanning acoustical microscope data obtained in experiments with epoxy-based polymer adhesive samples. Their advantages and effectiveness were demonstrated and compared. Limitations of these techniques are also discussed. Results of data processing of the acoustical images for basic types of defects (voids, delaminations, uncured regions) are represented and discussed.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Adaptive filtration of ultrasonic signals in the evaluation of adhesive bonds in automotive bodies


    Additional title:

    Adaptive Filterung von Ultraschallsignalen bei der Bewertung von Klebverbindungen in Automobilkarosserien


    Contributors:
    Severin, E.M. (author) / Maev, R.G. (author)

    Published in:

    Insight ; 47 , 1 ; 8-10


    Publication date :

    2005


    Size :

    3 Seiten, 4 Bilder, 5 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    Ultrasonic Evaluation of Thermal Degradation in Adhesive Bonds

    Lih, S. / Mal, A. K. / Bar-Cohen, Y. | NTRS | 1994


    Ultrasonic testing of adhesive bonds of thin metal sheets

    Goglio, L. / Rossetto, M. | Tema Archive | 1999