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    In-situ damage detection system for mechanophore-embedded fiber reinforced composites
    8.
    发明授权
    In-situ damage detection system for mechanophore-embedded fiber reinforced composites 有权

    公开(公告)号：US10908077B2

    公开(公告)日：2021-02-02

    申请号：US16221191

    申请日：2018-12-14

    Applicant: Aditi Chattopadhyay ,  Bonsung Koo ,  Lenore Dai ,  Ryan Gunckel ,  Jack Miller

    Inventor： Aditi Chattopadhyay ,  Bonsung Koo ,  Lenore Dai ,  Ryan Gunckel ,  Jack Miller

    IPC: G01N21/35 ,  G01N31/22 ,  G01L1/24 ,  C08L63/00

    Abstract: Methods and systems are provided for detecting mechanophore damage in a composite material where the mechanophores are embedded in a matrix of the composite material. A mechanical load is applied to the composite material. A damage precursor signal is generated as a result of the mechanical load and is detected before yield of the mechanophore embedded composite material. Detecting the damage precursor signal may include illuminating the mechanophore embedded composite material with UV light to excite the embedded mechanophores, capturing fluorescent emissions of the embedded mechanophores with a UV camera, and filtering light received at the UV camera based on an emission wavelength of the mechanophores. Alternatively, the damage precursor signal may be detected using spectra from an evanescent wave distorted by the mechanophore embedded composite material using an attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) system.

    STRESS-RESPONSIVE COMPOSITES
    9.
    发明申请
    STRESS-RESPONSIVE COMPOSITES 审中-公开

    公开(公告)号：US20200223993A1

    公开(公告)日：2020-07-16

    申请号：US16390969

    申请日：2019-04-22

    Applicant: Ryan Gunckel ,  Lenore Dai ,  Aditi Chattopadhyay ,  Bonsung Koo

    Inventor： Ryan Gunckel ,  Lenore Dai ,  Aditi Chattopadhyay ,  Bonsung Koo

    IPC: C08J5/08 ,  C08J5/04 ,  G01J1/42 ,  C08J3/28 ,  G01L1/24

    Abstract: Composite material can include a matrix material, a fiber dispersed in the matrix material, and an ultraviolet (UV)-light sensitive mechanophore grafted to a surface of the fiber. A method for making a fiber-reinforced polymer composite can include contacting a fiber in a first solution, rinsing and then drying intermediate fiber, contacting dried fiber in a third solution, rinsing, and then drying the rinsed fiber thereby generating functionalized fiber that is sensitive to ultraviolet light. The functionalized fiber can be combined with a polymer matrix material, cured, and irradiated, thereby generating a fiber-reinforced polymer composite.

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