The D-Sight technique is an optical double-pass retroreflection surface inspection technique developed by Diffracto Ltd. in Canada. It is a real-time technique for visualizing very small out-of-plane surface distortions and it is particularly applicable to the rapid and enhanced visual inspection of large surfaces. An evaluation ot the D-Sight technique for the rapid detection and assessment of impact damage in composite aircraft structures is described. The viability, reliability, limitations and possible improvements of the technique are discussed. The work has been performed within the EUCLID framework, RTP 3.1 'Aeronautical Application Technology', Work Package 2 'Global Diagnostic Damage Detection Methods'. A set of equations has been derived to establish the relation of various parameters of a D-Sight set-up. To quantify the inspection results, a D-Sight index has been introduced which represents the contrast of the D-Sight signature of a defect. Image processing routines have been designed for automatic detection of defects from D-Sight images. It is concluded that the D-Sight technique can reliably detect significant impact damage, with a damage area equal to or larger than 5 cm2, within a field of view of about 0.25 m2. The sensitivity of the technique corresponds to indent depths in the range of 0.01 to 0.05 mm. Inspections on a full-scale composite structure show that the D-Sight technique compares favourably with other inspection techniques, for the detection of impact damage and other defects with surface deformation.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    D-sight technique for rapid impact damage detection on composite aircraft structures


    Additional title:

    D-Sichtverfahren für den schnellen Nachweis von Schlagschäden an Verbundstrukturen der Luftfahrt


    Contributors:


    Publication date :

    1998


    Size :

    8 Seiten, 6 Bilder, 5 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    A technique for rapid inspection of composite aircraft structures for impact damage

    Komorowski, J.P. / Gould, R.W. / Pastorius, W.P. | Tema Archive | 1990


    Diffracto Sight Aircraft Inspection System for Composite Structures

    Komorowski, J. P. / Gould, R. W. / Simpson, D. L. et al. | British Library Conference Proceedings | 1993


    Rapid detection and quantification of impact damage in composite structures

    Zalameda, Joseph N. / Farley, Gary / Smith, Barry T. | NTRS | 1991


    Ground vehicle blunt impact damage formation to composite aircraft structures

    Kim, Hyonny / DeFrancisci, Gabriela K. / Chen, Zhi M. | Tema Archive | 2014