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公开(公告)号：US3724573A
公开(公告)日：1973-04-03
申请号：US3724573D
申请日：1972-05-09
Applicant: WIRTH GALLO & CO
Inventor： SANER K
Abstract: Two pretensioned vibrating strings are respectively stressed and stress-relieved by a force to be measured, said force being applied through an adjusting member by which the angle of force application can be varied to compensate initial errors of the apparatus.
Abstract translation: 两个预张紧的振弦通过被测量的力分别受应力和应力消除，所述力通过调节构件施加，通过该调节构件施加的角度可以改变以补偿装置的初始误差。
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公开(公告)号：US3600614A
公开(公告)日：1971-08-17
申请号：US3600614D
申请日：1969-11-10
Applicant: SOLARTRON ELECTRONIC GROUP
Inventor： CURTIS IAN F M
CPC classification number: G01L1/106
Abstract: A force transducer in which a strut is fixed at one end and has the other end coupled to an arrangement for applying force in the axial direction of the strut. In operation, transverse vibration of a length of the strut is maintained by feedback from a pickup coil to a drive coil through an amplifier, the frequency being a measure of the axial force to which the strut is subjected. Adjacent the said other end a node is formed by a clamp gripping a portion of the strut. This clamp includes rolling bearings arranged to permit axial movement of the gripped portion of the strut.
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公开(公告)号：US3505866A
公开(公告)日：1970-04-14
申请号：US3505866D
申请日：1966-10-13
Applicant: SINGER GENERAL PRECISION
Inventor： WEISBORD LEON , PAROS JEROME MARTIN
IPC: G01L1/10 , G01P15/097 , G01P15/10
CPC classification number: G01P15/097 , G01L1/10
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公开(公告)号：US3423999A
公开(公告)日：1969-01-28
申请号：US3423999D
申请日：1965-10-20
Applicant: WIRTH GALLO & CO
Inventor： WIRTH ARMIN , WIRTH JOHANNES , GALLO MARIO
CPC classification number: G01L1/106
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公开(公告)号：US2854581A
公开(公告)日：1958-09-30
申请号：US62095256
申请日：1956-11-07
Applicant: FERRANTI LTD
Inventor： SCARROTT GORDON G
IPC: G01L1/10
CPC classification number: G01L1/10
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Patent Agency Ranking
公开(公告)号：US2667068A
公开(公告)日：1954-01-26
申请号：US6328648
申请日：1948-12-03
Applicant: VIEHE FREDERICK W , HARRIS COURTENAY B
Inventor： VIEHE FREDERICK W , HARRIS COURTENAY B
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公开(公告)号：US12228463B2
公开(公告)日：2025-02-18
申请号：US17904268
申请日：2021-02-11
Applicant: Advanced Innergy Limited , Chevron U.S.A. Inc.
Inventor： Antonio Critsinelis , Yiannis Constantinides , Will Twelvetrees , Sid Mebarkia , Austin Harbison
IPC: G01L1/10 , E21B17/01 , E21B47/001 , E21B47/007 , E21B47/01 , G01L3/14 , G01M5/00
Abstract: A device (10) for monitoring strain of an elongate member (12) is deployed underwater. The device (10) comprises a first clamp (14) configured to embrace and couple to the elongate member (12) at a first axial location, a second clamp (16) configured to embrace and couple to the elongate member at a second axial location separated from the first axial location, and a sensor which is responsive to an angle between the first clamp and the second clamp.
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78.发明授权公开(公告)号：US12055453B2
公开(公告)日：2024-08-06
申请号：US17930024
申请日：2022-09-06
Inventor： Jun Mitani , Takero Mukai , Takanobu Kojima , Masahiko Nakazono
CPC classification number: G01L23/08 , G01L1/02 , G01L1/103 , G01L1/106 , G01L1/162 , G01L1/165 , G01L1/167 , G01L1/255
Abstract: A stress estimation method for a machine structure according to an embodiment is provided with a calculation step of calculating a relationship between the stress generated at the evaluation target position and a physical quantity including a sound pressure or vibration generated at a detection position different from the evaluation target position during vibration of the machine structure. The stress estimation method for a machine structure is provided with a detection step of detecting the physical quantity generated at the detection position during operation of the machine structure. The stress estimation method for a machine structure is provided with an estimation step of estimating the stress generated at the evaluation target position during operation of the machine structure on the basis of the relationship calculated in the calculation step and the physical quantity detected in the detection step.
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公开(公告)号：US20240183810A1
公开(公告)日：2024-06-06
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
CPC classification number: G01N27/04 , G01N17/02 , G01N17/04 , G01N27/02 , G01N27/026 , G01N33/383 , G01L1/10 , G01L1/20 , G01L1/22 , G01N17/00 , G01N17/006 , 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.
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公开(公告)号：US11906374B2
公开(公告)日：2024-02-20
申请号：US17015302
申请日：2019-02-06
Applicant: YAMAHA Corporation
Inventor： Tomoya Miyata
Abstract: Provided is a measurement method including measuring, by using a piezoelectric sheet sensor in contact with a measurement object, vibration transmitted from the measurement object to the piezoelectric sheet sensor and measuring pressing force between the measurement object and the piezoelectric sheet sensor.
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