Non-destructive testing of critical structural components is time consuming, while necessary for maintaining safe operation. Large aerospace structures, such as the vertical stabilizers of aircraft undergo inspection at regular intervals for damage diagnostics. However, conventional techniques for damage detection and identification before repair can be scheduled are conducted off-line and therefore can take weeks. The use of guided ultrasound waves is being investigated to expedite damage detection in composites. We measure the frequency dependent loss of ultrasonic guided waves for a structure comprising a boron-nitride composite skin sandwiching an aluminum honeycomb. A wide range of ultrasound frequencies propagate as measured using PZTs, with the lowest attenuation observed about 200-250 kHz. These measurements are confirmed using optical fiber Bragg grating arrays used as ultrasound transducers.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Propogation loss with frequency of ultrasound guided waves in a composite metal-honeycomb structure


    Contributors:

    Conference:

    Photonics in the Transportation Industry: Auto to Aerospace II ; 2009 ; Orlando,Florida,United States


    Published in:

    Publication date :

    2009-04-29





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Propogation loss with frequency of ultrasound guided waves in a composite metal-honeycomb structure [7314-25]

    Saxena, I.F. / Baid, H.K. / Guzman, N. et al. | British Library Conference Proceedings | 2009


    Modelling pressure waves propogation process in solid body-fluid systems

    Sannikov, V. / East-European Acoustical Association | British Library Conference Proceedings | 1994


    Evaluation of Motor Vehicle Initiation and Propogation, Vehicle Crash and Fire Propogation Test Program

    Jensen, J. L. / Santrock, J. / U.S. Department of Transportation; National Highway Traffic Safety Administration | British Library Conference Proceedings | 1998


    Detection of disbonds in a honeycomb composite structure using guided waves

    Baid, H. / Banerjee, S. / Joshi, S. et al. | Tema Archive | 2008


    Short-Wave Propogation using Neural Networks

    Londhe, S. N. / Deo, M. C. / Indian Institute of Technology | British Library Conference Proceedings | 2001