STATE DETERMINATION APPARATUS, STATE DETERMINATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

    公开(公告)号:US20250078287A1

    公开(公告)日:2025-03-06

    申请号:US18292975

    申请日:2021-08-06

    Inventor: Hiroshi IMAI

    Abstract: A state determination apparatus acquires each of time-series fixed images obtained by shooting a rotating object via a first optical device that rotates and emits incident light; calculates a displacement amount of a plurality of specific points on the object, and calculates a difference between the displacement amount of a reference specific point and the displacement amount of each specific point other than the reference specific point; calculates, as an out-of-plane displacement, a displacement of a surface of the object on an image plane following movement of the object in a normal direction of the image plane, using the difference; calculates, as an in-plane displacement, a displacement of the surface of the object on the image plane following movement of the surface of the object; and specifies an abnormality of the object, based on a distribution of the in-plane displacement or a temporal change of the out-of-plane displacement.

    STATE DETERMINATION APPARATUS, STATE DETERMINATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

    公开(公告)号:US20200292428A1

    公开(公告)日:2020-09-17

    申请号:US16646444

    申请日:2018-09-12

    Inventor: Hiroshi IMAI

    Abstract: A degradation state determination apparatus 100 is an apparatus for determining the state of a structure, and includes a measurement unit 10 configured to measure a deflection amount and a surface displacement amount of the structure, a statistical processing unit 20 configured to executes statistical processing using the measured deflection amount and surface displacement amount, and a degradation state determination unit 30 configured to determine the degradation state of the structure based on the result of statistical processing.

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