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    Electrical methods and systems for concrete testing
    1.
    发明授权
    Electrical methods and systems for concrete testing 有权

    公开(公告)号：US12298265B2

    公开(公告)日：2025-05-13

    申请号：US18438983

    申请日：2024-02-12

    Applicant: GIATEC SCIENTIFIC INC.

    Inventor： Pouria Ghods ,  Rouhollah Alizadeh ,  Mustafa Salehi

    IPC: G01N27/04 ,  G01L1/10 ,  G01L1/20 ,  G01L1/22 ,  G01N17/00 ,  G01N17/02 ,  G01N17/04 ,  G01N27/02 ,  G01N33/38 ,  G01R27/00

    Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified. Beneficially a method of determining the state of a rebar without electrical contact is taught.

    Determining a Pressure Associated with an Oral Care Device, and Methods Thereof
    4.
    发明申请
    Determining a Pressure Associated with an Oral Care Device, and Methods Thereof 有权

    公开(公告)号：US20230088940A1

    公开(公告)日：2023-03-23

    申请号：US17948649

    申请日：2022-09-20

    Applicant: Colgate-Palmolive Company

    Inventor： Hrebesh Molly SUBHASH ,  Benny E. URBAN, JR.

    IPC: A46B15/00 ,  A46B9/04 ,  A46B13/02 ,  A61C17/22 ,  G01L1/10

    Abstract: An oral care system including an oral care device and a processor. The oral care device includes a head having cleaning elements and a vibrational sensor configured to determine vibrational data emitted by the oral care device in use. The processor is operably coupled to the vibrational sensor and is configured to: determine, based on the vibrational data, an applied pressure of the cleaning elements upon an oral cavity of a user; determine an optimal pressure associated with the oral cavity of the user and a non-optimal pressure associated with the oral cavity of the user; and based on the applied pressure of the cleaning elements upon the oral cavity being substantially the non-optimal pressure, cause the applied pressure of the cleaning elements upon the oral cavity to be substantially the optimal pressure.

    METHOD AND A SYSTEM FOR ESTIMATING THE TENSION OF A TENSION MEMBER
    5.
    发明申请
    METHOD AND A SYSTEM FOR ESTIMATING THE TENSION OF A TENSION MEMBER 有权

    公开(公告)号：US20230048801A1

    公开(公告)日：2023-02-16

    申请号：US17795090

    申请日：2021-01-27

    Applicant: Danmarks Tekniske Universitet

    Inventor： Marie BRØNS ,  Jon Juel THOMSEN

    IPC: G01L5/04 ,  G01L1/10 ,  G01M7/02

    Abstract: Disclosed is a method for estimating the tension of a tension member (1), the method comprising the steps of exciting the tension member (1) such as to induce vibration of the tension member (1), sampling the vibration to obtain a first vibration signal (VS1), modifying the mass and/or the rotational inertia of the tension member (1) such as to provide a modified tension member (1a), exciting the modified tension member (1a) such as to induce vibration of the modified tension member (1a), sampling the vibration of the modified tension member to obtain a second vibration signal (VS2), and estimating the tension of the tension member based on a comparison of the first vibration signal (VS1) and the second vibration signal (VS2). Disclosed is also a system for estimating the tension of a tension member.

    Electrical methods and systems for concrete testing
    6.
    发明授权
    Electrical methods and systems for concrete testing 有权

    公开(公告)号：US11549899B2

    公开(公告)日：2023-01-10

    申请号：US17319276

    申请日：2021-05-13

    Applicant: GIATEC SCIENTIFIC INC.

    Inventor： Pouria Ghods ,  Rouhollah Alizadeh ,  Mustafa Salehi

    IPC: G01R27/08 ,  G01N27/04 ,  G01N17/02 ,  G01N33/38 ,  G01N27/02 ,  G01N17/04 ,  G01L1/10 ,  G01N17/00 ,  G01L1/20 ,  G01L1/22 ,  G01R27/00

    Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified. Beneficially a method of determining the state of a rebar without electrical contact is taught.

    Material tester and natural vibration determination-noise elimination thereof
    7.
    发明授权
    Material tester and natural vibration determination-noise elimination thereof 有权

    公开(公告)号：US11320354B2

    公开(公告)日：2022-05-03

    申请号：US16242005

    申请日：2019-01-08

    Applicant: SHIMADZU CORPORATION

    Inventor： Tohru Matsuura

    IPC: G01N3/62 ,  G01L1/10 ,  G01N3/30 ,  G01N3/08

    Abstract: An amplitude detecting method and a material tester are provided. As functional blocks of a program that is installed in a personal computer and is stored in a memory, a measurement noise eliminating part that eliminates measurement noise, a vibration noise eliminating part that eliminates vibration noise assumed to be caused by an inertial force according to a natural vibration according to reach of an impact of breakage or destruction of a test piece at the entire tester, an amplitude detecting part that detects the amplitude of a natural vibration superimposed in the data period used for evaluating material characteristics, and a display control part that controls display of an amplitude value of the natural vibration and a test result on the display device are included.

    Force sensor
    8.
    发明授权
    Force sensor 有权

    公开(公告)号：US11226245B2

    公开(公告)日：2022-01-18

    申请号：US16498437

    申请日：2017-03-31

    Applicant: Technische Universitaet Wien

    Inventor： Alexander Dabsch ,  Franz Keplinger ,  Christoph Rosenberg

    IPC: G01L1/10

    Abstract: A force sensor includes a frame and an oscillation structure which has arms and can oscillate freely in the frame. The arms are fixed to suspension frame regions and run transverse to one another at least in sections. At least one conductor extends along at least two arms. An AC voltage can be applied to the at least one conductor to excite at least one oscillation mode of the oscillation structure with a resonant frequency using Lorentz force. The force sensor is designed such that the suspension regions are at least partially spatially displaced relative to one another when a force is applied to the frame, that the magnitude of the spatial displacement of the suspension regions depends on the magnitude of the force, and that the spatial displacement of the suspension regions causes detuning of the resonant frequency, the magnitude of which depends on the spatial displacement magnitude.

    MECHANICAL RESONATOR DEVICE
    9.
    发明申请
    MECHANICAL RESONATOR DEVICE 有权

    公开(公告)号：US20210381877A1

    公开(公告)日：2021-12-09

    申请号：US16322645

    申请日：2017-08-01

    Applicant: Albert Schliesser

    Inventor： Albert Schliesser ,  Yeghishe Tsaturyan ,  Eugene Simon Polzik ,  Andreas Barg

    IPC: G01G3/16 ,  G01L1/10

    Abstract: The present invention relates to a mechanical resonator device. The resonator device comprises a resonator element made of an elastic material under tensile stress and adapted for sustaining at least one oscillation mode; and a clamping structure supporting the resonator element. The clamping structure has a phononic density of states exhibiting a bandgap or quasi-bandgap such that elastic waves of at least one polarisation and/or frequency are not allowed to propagate through the clamping structure. The resonator element and the clamping structure are configured to match with a soft-clamping condition that elastic waves of polarisation and/or frequency corresponding to the at least one oscillation mode of the resonator penetrate evanescently into the clamping structure in a manner such as to minimize bending throughout the entire resonator device. Thereby, bending related loss may be minimized and the Q-factor of the mechanical resonator may be maximized.

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