In this report we present the results of the analysis and experimental study of defect detection with Laser Doppler Vibrometry (LDV). The Non-Destructive Inspection (NDI) procedure is based on the vibrational mode evaluation for a test-object with specified defect parameters. To evaluate the procedure a clamped aluminum drum with radius R was selected as the test-object. The introduced defect was a thickness loss of 2.5%, 5.0% and 7.5% at the central part of the drum. The data from computational examination, based on finite element analysis, are compared with experimental data. Additionally, we present data from interrogation of a multilayer (carbon composite) element with preset defects in a specific layer and examples of corrosion detection. The experiments show that the proposed technique enables reliable defect detection, location, and quantification.


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    Title :

    Opto-acoustical sensor to examine the structural integrity of complex systems


    Contributors:
    Markov, V. (author) / Trolinger, J. (author) / Webster, J. (author) / Pardoen, G. (author)


    Publication date :

    2002-01-01


    Size :

    1525769 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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