In August of 1999, Boeing Corporation (Boeing) engineers began investigating failures of optical fiber being used on International Space Station flight hardware. Catastrophic failures of the fiber were linked to a defect in the glass fiber. Following several meetings of Boeing and NASA engineers and managers, Boeing created and led an investigation team, which examined the reliability of the cable installed in the U.S. Lab. NASA Goddard Space Flight Center's Components Technologies and Radiation Effects Branch (GSFC) led a team investigating the root cause of the failures. Information was gathered from: regular telecons and other communications with the investigation team, investigative trips to the cable distributor's plant, the cable manufacturing plant and the fiber manufacturing plant (including a review of build records), destructive and non-destructive testing, and expertise supplied by scientists from Dupont, and Lucent-Bell Laboratories. Several theories were established early on which were not able to completely address the destructive physical analysis and experiential evidence. Lucent suggested hydrofluoric acid (HF) etching of the glass and successfully duplicated the 'rocket engine' defect. Strength testing coupled with examination of the low strength break sites linked features in the polyimide coating with latent defect sites. The information provided below explains what was learned about the susceptibility of the pre-cabled fiber to failure when cabled as it was for Space Station and the nature of the latent defects.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    ISS Fiber Optic Failure Investigation Root Cause Report


    Beteiligte:
    H. Leidecker (Autor:in) / J. Plante (Autor:in)

    Erscheinungsdatum :

    2000


    Format / Umfang :

    56 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    ISS Fiber Optic Failure Investigation Root Cause Report

    Leidecker, Henning / Plante, Jeannette | NTRS | 2000


    HYDRAULIC ROOT CAUSE FAILURE ANALYSIS

    Weeks, Jack | TIBKAT | 2021


    DETERMINGING ROOT CAUSE OF LOCOMOTIVE FAILURE

    WANG CHRIS J / NARAIN ABHISHEK / LAKSHMIPATHY VIKRAM | Europäisches Patentamt | 2018

    Freier Zugriff

    Determining root cause of locomotive failure

    WANG CHRIS J / NARAIN ABHISHEK / LAKSHMIPATHY VIKRAM | Europäisches Patentamt | 2020

    Freier Zugriff

    Root Cause Incident Investigation Can Be Tricky

    Philley, J. / System Safety Society (U.S.) | British Library Conference Proceedings | 2006