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  • Open Access


    Determination of the Postmortem Interval Using Fiber Bragg Grating Sensors

    M. Adjailia1, H. Derbal Habak2,*, Y. Hamaizi1, H. Triki1

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 831-844, 2023, DOI:10.32604/fdmp.2022.022162

    Abstract Fiber Bragg grating (FBG) sensors are often used in monitoring activities and to ensure that environmental parameters satisfy industrial requirements. They offer crucial safety measures in the early detection of hazards due to their greatly reduced size, low weight, flexibility, and immunity to electromagnetic interference. These characteristics make FBGs suitable also for use in relation to the human body for in vivo measurements and long-term monitoring. In this study, recent developments are presented with regard to the utilization of these sensors to measure the so-called post-mortem interval (PMI). Such developments rely on numerical simulations based on the Matlab software and… More >

  • Open Access


    Reconstruction Technology of Flexible Structure Shape Based on FBG Sensor Array and Deep Learning Algorithm

    Kelong Huang, Jie Yan, Lei Zhang*, Faye Zhang, Mingshun Jiang, Qingmei Sui

    Structural Durability & Health Monitoring, Vol.16, No.2, pp. 179-194, 2022, DOI: 10.32604/sdhm.2022.018202

    Abstract A structural displacement field reconstruction method is proposed to aim at the problems of deformation monitoring and displacement field reconstruction of flexible plate-like structures in the aerospace field. This method combines the deep neural network model of the cross-layer connection structure with the fiber grating sensor network. This paper first introduces the principle of strain detection of fiber grating sensor, studies the mapping relationship between strain and displacement, and proposes a strain-displacement conversion model based on an improved neural network. Then the intelligent structure deformation monitoring system is built. By controlling the stepping distance of the motor to produce different… More >

  • Open Access


    An Application of Support Vector Regression for Impact Load Estimation Using Fiber Bragg Grating Sensors

    Clyde K Coelho, Cristobal Hiche, Aditi Chattopadhyay

    Structural Durability & Health Monitoring, Vol.7, No.1&2, pp. 65-82, 2011, DOI:10.3970/sdhm.2011.007.065

    Abstract Low velocity impacts on composite plates often create subsurface damage that is difficult to diagnose. Fiber Bragg grating (FBG) sensors can be used to detect subsurface damage in composite laminates due to low velocity impact. This paper focuses on the prediction of impact loading in composite structures as a function of time using a support vector regression approach. A time delay embedding feature extraction scheme is used since it can characterize the dynamics of the impact using the sensor signals. The novelty of this approach is that it can be applied on complex geometries and does not require a dense… More >

  • Open Access


    Dynamic Strain Sensing Using Adaptive Fiber Bragg Grating Sensors

    Yan-Jin Zhu, Yinian Zhu, Li Hui, Sridhar Krishnaswamy

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.20, No.1, pp. 29-30, 2011, DOI:10.3970/icces.2011.020.029

    Abstract Invited Lecture

    Prof. Sridhar Krishnaswamy

    Northwestern University, USA More >

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