Composite structures present a unique structural health-monitoring problem. Damage can occur during manufacture and usage that is not easily detectable, and it can significantly weaken the structure. The U.S. Army's fleet of helicopters operates in extreme conditions. The rigors of this environment present a unique challenge to monitor the health of the helicopter's composite structural components. Under a U.S. Army Phase II SBIR, Mide is investigating a novel method that uses the measured electrical resistances of a composite structure only along the edges of the structure to monitor its health. The major advantages of the proposed innovation are that it is practical, minimizes wiring/cabling, and does not require any additional sensors to be embedded within the composite. Not embedding sensors in the composite maintains the strength and integrity of the structure and reduces cost. The paper reports the results obtained with an in-house developed finite element model that predicts the resistive behavior of an-isotropic electrically conductive laminates. The analytical results were compared with and verified through tests on a small-scale test article. Initial results of tests conducted on a landing gear door of the Comanche helicopter are also reported. The program will conduct an extensive test matrix that includes ballistic tests at Fort Eustis, where the system will be used to detect size and location of ballistic damage in real time.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Resistance-based structural health monitoring of electrically conductive composites


    Contributors:


    Publication date :

    2005


    Size :

    23 Seiten, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Electrically conductive structure

    RETZ KEVIN M / PRICHARD ALAN K | European Patent Office | 2017

    Free access

    Coating including electrically conductive lines directly on electrically conductive layer

    UPRETY KRISHNA KAMAL / BIMANAND ALEXANDER ZIROM / LAKDAWALA KHUSHROO HOMI | European Patent Office | 2023

    Free access

    COATING INCLUDING ELECTRICALLY CONDUCTIVE LINES DIRECTLY ON ELECTRICALLY CONDUCTIVE LAYER

    UPRETY KRISHNA KAMAL / BIMANAND ALEXANDER ZIROM / LAKDAWALA KHUSHROO HOMI | European Patent Office | 2020

    Free access

    Electrically conductive structure

    RETZ KEVIN MATTHEW / PRICHARD ALAN KEITH | European Patent Office | 2015

    Free access

    STRUCTURAL MODULE ASSEMBLY HAVING OVERMOLDED ELECTRICALLY CONDUCTIVE REINFORCEMENTS

    GRGAC STEVEN / GRELLA PHILIP | European Patent Office | 2017

    Free access