公开(公告)号：US20200096418A1

公开(公告)日：2020-03-26

申请号：US16553978

申请日：2019-08-28

Applicant: Rolls-Royce Deutschland Ltd & Co KG

Inventor： Sebastian NOWOISKY ,  Noushin MOKHTARI MOLK ABADI ,  Mateusz GRZESZKOWSKI

IPC: G01M13/045 ,  F16C17/24 ,  F16C33/12 ,  G01L1/25 ,  G01L1/10

Abstract: A method for estimating the state of wear of a plain bearing comprises: establishing a time profile of at least one friction event from a structure borne noise signal by a mathematical friction event model, determination of a measure, which characterizes at least one friction event based on a time duration of the at least one friction event, the amplitude of the at least one friction event and/or an integral measure over the at least one friction event, combination of the measure, accumulated over time, with an angle indication for the at least one friction event at the circumference of the plain bearing in order to determine a spatially resolved wear model of the plain bearing, wherein the spatially resolved wear model is obtained by an estimating filter, and outputting a signal in accordance with the wear model to characterize the state of wear.

公开(公告)号：US10571418B2

公开(公告)日：2020-02-25

申请号：US15496298

申请日：2017-04-25

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.

公开(公告)号：US10550684B2

公开(公告)日：2020-02-04

申请号：US15031147

申请日：2014-10-21

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Caroline Humphrey ,  Ashley Bernard Johnson ,  Paul Frederick Cilgrim Dickenson ,  Gokturk Tunc ,  Michael Paul Barrett

IPC: E21B47/00 ,  E21B47/12 ,  E21B17/20 ,  E21B47/01 ,  G01V11/00 ,  E21B7/00 ,  G01L1/10

Abstract: The operation of rotary equipment carried on elongate structure such as coiled tubing extending into a borehole from the Earth's surface is carried out by providing at least one optical fibre extending downhole to the rotary equipment from the surface, using optical time domain reflectometry to operating the optical fibre as a distributed vibration sensor while the rotary equipment is in operation, and thereby observing vibration created by the rotary equipment.

公开(公告)号：US20200033202A1

公开(公告)日：2020-01-30

申请号：US16494925

申请日：2018-03-09

Applicant: DIGI SENS HOLDING AG

Inventor： Olivier STUKER

IPC: G01L1/04 ,  G01L1/10 ,  G01L1/22 ,  G01L5/00 ,  G01L5/06 ,  G01L5/10

Abstract: The invention relates to a load detection unit having a spring-elastic load carrier assembly for receiving the load (10) and a sensor (3) for the deformation of the load carrier assembly, which occurs under the load (10) that is to be detected, wherein a deformation transmission unit (6) is operatively arranged between the load carrier assembly and the sensor (3). A method, in which additionally a deformation transmission unit is used, is thus provided, which during operation picks up the deformation of the load carrier assembly and transmits it to the sensor as a changed force/path load.

公开(公告)号：US20190353538A1

公开(公告)日：2019-11-21

申请号：US16527582

申请日：2019-07-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yousuke IRIE ,  Hirotsugu INOUE ,  Takuya NIIOKA

IPC: G01L1/10 ,  H01J37/22 ,  H01J37/26

Abstract: In a stress measurement method, an object to be measured is vibrated at a plurality of oscillation frequencies, and a temperature amplitude of the object to be measured is measured by using a temperature sensor. Parameters of a one-dimensional heat conduction equation described below are identified by performing curve-fitting, on the basis of the one-dimensional heat conduction equation, on a measurement value of the temperature amplitude with respect to frequency characteristics of a temperature change component and a phase component based on a thermoelastic effect. The frequency characteristics are obtained at the plurality of oscillation frequencies. The one-dimensional heat conduction equation indicates a theoretical solution of a temperature amplitude on a surface of a coating film based on heat conduction and the thermoelastic effect of each of a substrate and the coating film. Then, a stress of the object to be measured is obtained based on the identified parameters.

公开(公告)号：US20190234849A1

公开(公告)日：2019-08-01

申请号：US16242005

申请日：2019-01-08

Applicant: SHIMADZU CORPORATION

Inventor： Tohru MATSUURA

IPC: G01N3/62 ,  G01L1/10 ,  G01N3/30

CPC classification number: G01N3/62 ,  G01L1/103 ,  G01N3/08 ,  G01N3/30 ,  G01N2203/0003 ,  G01N2203/001 ,  G01N2203/0012 ,  G01N2203/0017 ,  G01N2203/021 ,  G01N2203/0218 ,  G01N2203/0252 ,  G01N2203/0268

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.

公开(公告)号：US10352785B2

公开(公告)日：2019-07-16

申请号：US15870299

申请日：2018-01-12

Applicant: Hyundai Motor Company ,  Kia Motors Corporation ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Jae-Soo Gwon ,  Gyung-Min Toh ,  Jae-Hong Lee ,  Jun-Hong Park

IPC: G01L1/10 ,  B25B23/14 ,  G01L5/00 ,  G01L5/24

Abstract: A method of measuring an axial force of a bolt may include fastening a joint using a fastener, receiving a vibration signal by a detector, transforming the received vibration signal into frequency domain data having a plurality of frames, analyzing the signal transformed into the frequency domain data, and predicting an axial force and indicating a predictive value thereof.

公开(公告)号：US20180321095A1

公开(公告)日：2018-11-08

申请号：US15689689

申请日：2017-08-29

Applicant: HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： CHIEN-WEN WANG

IPC: G01L1/10 ,  G01L19/00

CPC classification number: G01L1/106 ,  A61H2201/1207 ,  A61H2201/5071 ,  G01L19/0092

Abstract: A health device is also provided. The health device comprises a health device body and a pressure sensing system. The pressure sensing system is located on the health device body. The pressure sensing system comprises a plurality of pressure sensors, a reminder device a battery system, and a main circuit board. The plurality of pressure sensors is spaced from one another. The plurality of pressure sensors, the reminder device, and the battery system are electrically connected to the main circuit board.

公开(公告)号：US10111323B2

公开(公告)日：2018-10-23

申请号：US15470309

申请日：2017-03-27

Applicant: Wistron Corporation

Inventor： Tien-Chung Tseng ,  Chen-Chieh Lien

IPC: G01L1/10 ,  H05K1/02 ,  H05K1/11 ,  H05K5/00 ,  H05K5/03 ,  H05K7/14 ,  G01L1/20

Abstract: A pressure sensing module for sensing a pressure applied to a circuit board is disclosed. The pressure sensing module includes a conductive pad, an elastic cover, a pushing part and a conductive unit. The conductive pad is connected to the circuit board. The elastic cover is connected to the circuit board and located on the conductive pad. The elastic cover includes a top end. The pushing part is connected to the top end. The conductive unit is located above the conductive pad. When the pushing part is not under pressure, the conductive unit does not move to touch the conductive pad. When the pushing part is under pressure, the pushing part causes the conductive unit to move toward the conductive pad such that the conductive unit touches the conductive pad.

公开(公告)号：US20180246006A1

公开(公告)日：2018-08-30

申请号：US15904376

申请日：2018-02-25

Applicant: Pile Dynamics, Inc.

Inventor： Garland E. Likins, JR. ,  George R. Piscsalko ,  Dean A. Cotton ,  Brent Robinson ,  Frank Rausche ,  Richard E. Berris, JR.

IPC: G01M11/08 ,  G01L1/22 ,  G01L1/10 ,  G01B11/16 ,  G06T7/246 ,  G01D5/347

CPC classification number: G01M11/081 ,  E02D5/22 ,  E02D13/005 ,  G01B11/16 ,  G01D5/34707 ,  G01L1/103 ,  G01L1/225 ,  G01M5/0058 ,  G06T7/248 ,  G06T7/254

Abstract: A non-contact strain and/or displacement measurement system for use with structural objects having an optical device, a data store and an image arrangement that is fixed relative to the structural object to be tested, the optical device including an image receiving device for receiving visual images and the data store being configured to record the received visual images, the image receiving device being spaced from the image arrangement by an optical spacing such that the image receiving device has a visual range that includes a portion of the structural object and the image arrangement being within the portion, the image arrangement having at least one image element wherein movement of the at least one image element during a measurement period provides image data to calculate structural object strain and/or structural object displacement.