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    Deterioration prediction method
    1.
    发明授权
    Deterioration prediction method 有权

    公开(公告)号：US12013331B2

    公开(公告)日：2024-06-18

    申请号：US17417374

    申请日：2019-12-16

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Norihiro Fujimoto ,  Hisatoshi Kasahara ,  Yosuke Okamura

    IPC: G01N17/00 ,  G01N33/2045 ,  G01N33/38

    CPC classification number: G01N17/006 ,  G01N17/002 ,  G01N33/2045 ,  G01N33/383

    Abstract: A degradation predicting method is a degradation predicting method for predicting degradation of a reinforced concrete structure buried in the ground, the method including: a condensation occurrence condition evaluating step (S1) of evaluating a condensation occurrence condition on which condensation occurs on reinforcing steel; a condensation time calculating step (S2) of calculating a condensation time that is a total time in which condensation occurs on the reinforcing steel based on the condensation occurrence condition for each of a plurality of the reinforced concrete structures; a threshold determining step (S3) of determining a threshold of underground depth at which the reinforced concrete structure is less prone to degradation based on a relationship between the condensation time and a underground depth of the reinforced concrete structure; and a degradation predicting step (S4) of predicting degradation of a prediction-target reinforced concrete structure based on the threshold.

    Concrete structure deterioration determination method, device and program
    2.
    发明授权
    Concrete structure deterioration determination method, device and program 有权

    公开(公告)号：US12163946B2

    公开(公告)日：2024-12-10

    申请号：US17913150

    申请日：2020-03-26

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Hisatoshi Kasahara ,  Yosuke Takeuchi ,  Yosuke Okamura ,  Junichiro Tamamatsu

    IPC: G01N33/38

    Abstract: An assessment device (1) according to the present disclosure includes a determination unit (10) that determines a first period corresponding to a shortest period until deterioration of a concrete structure due to an aging-induced deterioration cause appears and a second period shorter than the first period and corresponding to a longest period until deterioration of the concrete structure due to a material-induced deterioration cause appears and an assessment unit (20) that assesses that a deterioration causing material is used in a concrete structure having, in a checking result indicating a period elapsed from construction of the concrete structure and the presence or absence of deterioration in the concrete structure, the deterioration and the period elapsed from the construction which is not shorter than the second period and is shorter than the first period.

    Calculation device, calculation method, and program
    6.
    发明授权
    Calculation device, calculation method, and program 有权

    公开(公告)号：US11933714B2

    公开(公告)日：2024-03-19

    申请号：US16972606

    申请日：2019-05-08

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Hisatoshi Kasahara ,  Tomoyasu Nagai ,  Norihiro Fujimoto

    IPC: G01N17/00 ,  G05D23/19

    CPC classification number: G01N17/002 ,  G05D23/1917 ,  G05D23/1919

    Abstract: A calculation apparatus includes a first acquisition unit that acquires a first approximation expression based on a change in a temperature of a temperature controlled member with respect to a change in an outside temperature measured for a plurality of temperatures of a temperature controlling member, a second acquisition unit that obtains a second approximation expression based on the first approximation expression, a temperature input unit that receives input of a first set temperature of the temperature controlled member and a second set temperature of the temperature controlling member, a generation unit that substitutes the second set temperature into the second approximation expression to generate a third approximation expression representing relationship between the outside temperature and the temperature of the temperature controlled member, and a calculation/output unit that substitutes the first set temperature into the third approximation expression to calculate an outside temperature to be set.

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