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    Verifying structural integrity of materials
    1.
    发明授权
    Verifying structural integrity of materials 有权

    公开(公告)号：US11112374B2

    公开(公告)日：2021-09-07

    申请号：US16469900

    申请日：2017-12-15

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Christopher R. Yungers ,  Subhalakshmi M. Falknor ,  David H. Redinger ,  Ronald D. Jesme ,  Eric M. Chinnock

    IPC: G01N27/20

    Abstract: A method may include coupling a first electrical connector of an article to a second electrical connector of a measurement device. The article may include a tested material, the first electrical connector, and a plurality of electrical contacts electrically connected to the first electrical connector. The measurement device may include a power source and a user interface. The method also may include causing, by a controller, an electrical signal to be applied to a pair of drive electrical contacts from the plurality of electrical contacts. The method further may include receiving, by the controller, from an analog-to-digital converter, a measured voltage measured using a measurement electrical contact from the plurality of electrical contacts. The method also may include determining, by the controller, whether the tested material includes a crack or other defect based on the measured voltage.

    VERIFYING STRUCTURAL INTEGRITY OF MATERIALS
    2.
    发明申请
    VERIFYING STRUCTURAL INTEGRITY OF MATERIALS 审中-公开

    公开(公告)号：US20190323980A1

    公开(公告)日：2019-10-24

    申请号：US16469900

    申请日：2017-12-15

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Christopher R. Yungers ,  Subhalakshmi M. Falknor ,  David H. Redinger ,  Ronald D. Jesme ,  Eric M. Chinnock

    IPC: G01N27/20

    Abstract: A method may include coupling a first electrical connector of an article to a second electrical connector of a measurement device. The article may include a tested material, the first electrical connector, and a plurality of electrical contacts electrically connected to the first electrical connector. The measurement device may include a power source and a user interface. The method also may include causing, by a controller, an electrical signal to be applied to a pair of drive electrical contacts from the plurality of electrical contacts. The method further may include receiving, by the controller, from an analog-to-digital converter, a measured voltage measured using a measurement electrical contact from the plurality of electrical contacts. The method also may include determining, by the controller, whether the tested material includes a crack or other defect based on the measured voltage.

    Verifying structural integrity of materials using electrical properties
    3.
    发明授权
    Verifying structural integrity of materials using electrical properties 有权

    公开(公告)号：US11150209B2

    公开(公告)日：2021-10-19

    申请号：US16626264

    申请日：2018-06-29

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Christopher R. Yungers ,  David H. Redinger ,  Eric M. Chinnock ,  Jennifer F. Schumacher

    IPC: G01N27/20

    Abstract: A measurement system may include an electrical signal source; a plurality of electrical contacts electrically coupled to a tested material; a respective resistor associated with each electrical contact; a common node to which the respective resistors are electrically connected; and a control module. The control module may cause the electrical signal source to be electrically connected to a selected electrical contact as an input electrical contact. The remaining electrical contacts are electrically connected to a return node of the electrical signal source as extraction electrical contacts. The control module also may cause the electrical signal source to output an electrical signal to an input electrical contact; cause a respective electrical signal parameter to be determined at the respective resistor associated with each respective extraction electrical contact; and determine whether the tested material includes a crack or other defect based on the respective electrical signal parameters.

    ELECTRODE PLACEMENT FOR VERIFYING STRUCTURAL INTERGRITY OF MATERIALS
    5.
    发明申请
    ELECTRODE PLACEMENT FOR VERIFYING STRUCTURAL INTERGRITY OF MATERIALS 有权

    公开(公告)号：US20210208094A1

    公开(公告)日：2021-07-08

    申请号：US17301082

    申请日：2021-03-24

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： David H. Redinger ,  Christopher R. Yungers ,  Eric M. Chinnock ,  Jennifer F. Schumacher

    IPC: G01N27/20 ,  G01N27/04

    Abstract: A technique may include applying a first electrical signal to a first pair of drive electrodes, and, while applying the first electrical signal to the first pair of drive electrodes, determining a first measured voltage using a first measurement electrode. The technique further may include applying a second electrical signal to a second pair of drive electrodes, and, while applying the second electrical signal to the second pair of drive electrodes, determining a second measured voltage using a second, different measurement electrode. The first pair of drive electrodes, the second pair of drive electrodes, the first measurement electrode, and the second, different measurement electrode may from a set of N electrodes electrically coupled to the material. The technique also may include determining whether the material includes a crack or other defect based on a comparison between the first measured voltage and the second measured voltage.

    Electrode placement for verifying structural integrity of materials
    6.
    发明授权
    Electrode placement for verifying structural integrity of materials 有权

    公开(公告)号：US10983081B2

    公开(公告)日：2021-04-20

    申请号：US16461452

    申请日：2017-11-15

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： David H. Redinger ,  Christopher R. Yungers ,  Eric M. Chinnock ,  Jennifer F. Schumacher

    IPC: G01N27/20 ,  G01N27/04

    Abstract: A technique may include applying a first electrical signal to a first pair of drive electrodes, and, while applying the first electrical signal to the first pair of drive electrodes, determining a first measured voltage using a first measurement electrode. The technique further may include applying a second electrical signal to a second pair of drive electrodes, and, while applying the second electrical signal to the second pair of drive electrodes, determining a second measured voltage using a second, different measurement electrode. The first pair of drive electrodes, the second pair of drive electrodes, the first measurement electrode, and the second, different measurement electrode may from a set of N electrodes electrically coupled to the material. The technique also may include determining whether the material includes a crack or other defect based on a comparison between the first measured voltage and the second measured voltage.

    Electrode placement for verifying structural integrity of materials
    8.
    发明授权
    Electrode placement for verifying structural integrity of materials 有权

    公开(公告)号：US11609202B2

    公开(公告)日：2023-03-21

    申请号：US17301082

    申请日：2021-03-24

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： David H. Redinger ,  Christopher R. Yungers ,  Eric M. Chinnock ,  Jennifer F. Schumacher

    IPC: G01N27/20 ,  G01N27/04

    Abstract: A technique may include applying a first electrical signal to a first pair of drive electrodes, and, while applying the first electrical signal to the first pair of drive electrodes, determining a first measured voltage using a first measurement electrode. The technique further may include applying a second electrical signal to a second pair of drive electrodes, and, while applying the second electrical signal to the second pair of drive electrodes, determining a second measured voltage using a second, different measurement electrode. The first pair of drive electrodes, the second pair of drive electrodes, the first measurement electrode, and the second, different measurement electrode may from a set of N electrodes electrically coupled to the material. The technique also may include determining whether the material includes a crack or other defect based on a comparison between the first measured voltage and the second measured voltage.

    Verifying structural integrity of materials
    9.
    发明授权
    Verifying structural integrity of materials 有权

    公开(公告)号：US11255807B2

    公开(公告)日：2022-02-22

    申请号：US16461423

    申请日：2017-11-15

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Eric M. Chinnock ,  Christopher R. Yungers ,  Subhalakshmi M. Falknor ,  David H. Redinger

    IPC: G01N27/04 ,  H01R4/62 ,  G01N27/20 ,  F41H5/04

    Abstract: A measurement system may include control electronics; an electrical signal source; a plurality of measurement system electrical contacts; at least one feature for repeatably electrically connecting the plurality of measurement system electrical contacts to selected locations of a tested material. The control electronics may be configured to cause the electrical signal source to output an electrical signal; determine a measured voltage in response to the electrical signal using a measurement electrical contact from the plurality of measurement system electrical contacts. The measurement electrical contact is electrically coupled to the tested material. The control electronics also may be configured to determine whether the tested material includes a crack or other defect based on the measured voltage.

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