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Thomas Schmitt
Dipl.-Ing. (FH) Electrical Engineering
Division Manager Test Center
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Damaged part and failure analysis
on a folding display

  • Task

    In pre-series production vehicles there were a number of failures because the lid of the folding display could not be closed cleanly. The supplier of the display asked us to certify that the folding mechanism was not the cause of this failure. Finally, we had to discover why the folding display in question was not closing completely under certain circumstances.

  • Performance

    Construction of a mechanism to support the entire folding display with sensors on the left, right and middle to demonstrate that the closing mechanism also always worked during temperature changes and with mild vibration.

    Further highlights of the project:

    • Test objects were tested in the climate cabinet (long-term test) at different temperatures, with simultaneous control (testing) of lid closure
    • Data logger
    • Inductive distance sensor, left and right
    • Distance measurement using a laser in the centre
    • Storage of measured values
    • Programming of the software in LabVIEW

  • Resümee

    Die Analyse konnte keine Fehler am Schadteil feststellen. Alle Funktionen waren gemäß der Spezifikation erfüllt. Somit musste der Fehler außerhalb bzw. in Zusammenhang mit dem Verbau-Umfeld bestehen. Letztendlich konnte dies auch durch den Auftraggeber nachgestellt und bewiesen werden.