The appearance of defects such as 'hollows1 and 'shock lines' can affect the perceived quality and attractiveness of automotive skin panels. Predicting their occurrence is difficult because they are usually small, localised deviations from the intended styling of the panels. However, despite their size, they become visually apparent after the application of paint. As a result, the perceived quality of a panel may become unacceptable and considerable time may be dedicated to minimising their occurrence through tool modifications. This paper will look at the causes of these defects and will illustrate the use of the wavelet transform as a technique that can be applied to simulation results as well as measured data to locate and quantify their severity. A key aspect of the problem is to relate the output of the transform to how an observer perceives a defect and this will be illustrated with several test cases.


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    Title :

    Predicting the occurrence of cosmetic defects in automotive skin panels


    Additional title:

    Vorhersage des Erscheinens von kosmetischen Defekten an Außenblechen für Kraftfahrzeuge


    Contributors:
    Hazra, S. (author) / Williams, D. (author) / Roy , R. (author) / Aylmore, R. (author) / Smith, A. (author)


    Publication date :

    2010


    Size :

    8 Seiten, 4 Bilder, 2 Tabellen, 15 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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