Shape sensing, identifying the shape of the structure based on sensor, which was installed on the structure, is an important technology for structural health monitoring (SHM). It contributes monitoring the condition of the structure, feedback control, and fatigue estimation. By installing fiber-optic sensor on the structure like nerves, the deformed shape can be identified based on inverse finite element method (iFEM) from the measurement strain. The measurement error and the placement of fiber-optic sensor affect the result of shape sensing. Here we show the shape sensing of a bended stiffened panel in the simulation and verify the influence of the measurement error and the sensor placement. The deflection of the plate is identified with an error less than 1% of maximum deflection. The mean percent difference (MPD) calculated from the measurement strain giving Gaussian noise with a standard deviation of 5% of the maximum strain was 2.86%. Furthermore, with simple bending deformation, it was found that shape sensing can be performed with less sensor placement. Our results demonstrate that the realistic sensor performance and sensor placement enable shape sensing of local structure of ship structure such as stiffened panel.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Additional title:

    Lecture Notes in Civil Engineering


    Contributors:

    Conference:

    Practical Design of Ships and Other Floating Structures ; 2019 ; Yokohama, Japan September 22, 2019 - September 26, 2019



    Publication date :

    2020-10-04


    Size :

    9 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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

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


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

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


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

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


    Fiber optic distributed sensors

    Szustakowski, Mieczyslaw / Ciurapinski, Wieslaw M. | SPIE | 1997


    Distributed fiber optic sensing system

    FILOTEO RAZO AGUSTIN / ORTEGA MÉNDEZ ABDIEL / REYES BARÓN OMAR et al. | European Patent Office | 2022

    Free access