Digital shearography is a well-known interferometric technique that has established itself as a reliable alternative to conventional methods in NDT of varies aeronautical materials and parts., and is increasingly being used in the aviation industry. Unlike the photographic interferometry methods it can instantly and in real time produce interferometric images in digital form, with no film processing required. The purpose of this paper is to introduce the available technology of shearography during the last decade. NDT Inspections of some aircraft materials were performed with our shearographic systems in a Lab or workshop environment. The testing results and analyses are presented. The Improvements in sensitivity and dynamic range of the measuring system makes it more effective to detect delamination, impact damage, skin-to-core disbond, etc. in aircraft structures. The defects about 10 mm even at far side in a component panel of 35mm thickness can be found out easily.


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    Title :

    NDT of aeronautical materials by digital shearography


    Additional title:

    ZfP von Raumfahrtwerkstoffen mittels digitaler Scherographie


    Contributors:
    Zhang, Yubei (author) / Wang, Zheng (author) / Guo, Guangping (author)


    Publication date :

    2010


    Size :

    4 Seiten, 4 Bilder, 5 Quellen


    Remarks:

    (nicht paginiert)


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





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