NASA Langley Research Center is investigating a variety of techniques for mitigating aircraft accidents due to structural component failure. One technique under consideration combines distributed fiber optic strain sensing with an inverse finite element method for detecting and characterizing structural anomalies anomalies that may provide early indication of airframe structure degradation. The technique identifies structural anomalies that result in observable changes in localized strain but do not impact the overall surface shape. Surface shape information is provided by an Inverse Finite Element Method that computes full-field displacements and internal loads using strain data from in-situ fiberoptic sensors. This paper describes a prototype of such a system and reports results from a series of laboratory tests conducted on a test coupon subjected to increasing levels of damage.


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    Titel :

    Structural Anomaly Detection Using Fiber Optic Sensors and Inverse Finite Element Method


    Beteiligte:
    Quach, Cuong C. (Autor:in) / Vazquez, Sixto L. (Autor:in) / Tessler, Alex (Autor:in) / Moore, Jason P. (Autor:in) / Cooper, Eric G. (Autor:in) / Spangler, Jan. L. (Autor:in)

    Kongress:

    AIAA Guidance, Navigation, and Control Conference and Exhibit ; 2005 ; San Francisco, CA, United States


    Erscheinungsdatum :

    2005-01-01


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Structural Anomaly Detection Using Fiber Optic Sensors and Inverse Finite Element Method

    Quach, Cuong / Vazquez, Sixto / Tessler, Alexander et al. | AIAA | 2005


    Three-Dimensional Shape Sensing by Inverse Finite Element Method Based on Distributed Fiber-Optic Sensors

    Kobayashi, Makito / Jumonji, Takuya / Murayama, Hideaki | Springer Verlag | 2020



    Three-Dimensional Shape Sensing by Inverse Finite Element Method Based on Distributed Fiber-Optic Sensors

    Kobayashi, Makito / Jumonji, Takuya / Murayama, Hideaki | TIBKAT | 2021


    Structural Health Monitoring Using High-Density Fiber Optic Strain Sensor and Inverse Finite Element Methods

    Vazquez, Sixto L. / Tessler, Alexander / Quach, Cuong C. et al. | NTRS | 2005