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公开(公告)号：US12084098B2
公开(公告)日：2024-09-10
申请号：US17264674
申请日：2019-07-23
Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES , ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Olivier Mesnil , Bastien Chapuis , Tom Druet
CPC classification number: B61L23/044 , B61L23/045 , B61L23/14 , G01N29/043 , G01N29/11 , G01N29/4463 , G01N2291/103 , G01N2291/2623
Abstract: A method and system for inspecting a rail by guided waves, the rail being instrumented by sensors. The method comprises the steps of receiving elastic wave measurements from one or more sensors, as a train passes, releasing energy as guided waves into the rail; and of determining a function representative of the impulse response of the rail and the sensors. Developments describe how to determine the existence, position and characterisation of a defect in the rail (e.g. fracture, incipient fracture, etc.), the use of inter-correlation analyses, correlation of the coda of correlations, Passive Inverse Filter, imaging techniques. Other aspects are described for exploring rail defects: sensor position and movement, acquisition time, sampling frequency, frequency filters, amplifications, techniques for learning during successive train passes, signal injection by transducers. Software aspects are described.
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公开(公告)号：US11982646B2
公开(公告)日：2024-05-14
申请号：US17333751
申请日：2021-05-28
Applicant: ADVANTEST Corporation
Inventor： Taiichiro Ida , Hideaki Iwazaki
CPC classification number: G01N29/2418 , A61B5/0095 , G01N29/4463 , G01N2291/011 , G01N2291/02475 , G01N2291/02854 , G01N2291/044 , G01N2291/045 , G01N2291/2638
Abstract: An optical ultrasonic wave measuring apparatus includes an ultrasonic pulse output section, a light pulse output section, a reflected wave measuring section, an optoacoustic wave measuring section, an exceeding time point acquiring section, and a measurement result shifting section. The reflected wave measuring section measures, in correspondence to time, a reflected wave as a result of reflection of the ultrasonic pulse at a measuring target, which may be a skin surface. The optoacoustic wave measuring section measures, in correspondence to time, an optoacoustic wave generated by the light pulse at the measuring target. The exceeding time point acquiring section acquires an exceeding time point at which a measurement result of the reflected wave exceeds a predetermined threshold value. The measurement result shifting section shifts a measurement result of the optoacoustic wave by a first shift time toward the time point of output of the light pulse.
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公开(公告)号：US11874254B2
公开(公告)日：2024-01-16
申请号：US17092346
申请日：2020-11-09
Applicant: ABB Schweiz AG
Inventor： Miklos Lenner , Frank Kassubek , Stefano Marano , Gerrit Held
CPC classification number: G01N29/041 , G01N29/07 , G01N29/11 , G01N29/28 , G01N29/30 , G01N29/4427 , G01N29/4436 , G01N29/4463 , G01N29/46 , G01N2291/044
Abstract: A signal processing unit configured to: cause a first ultrasound emitter, when attached to a wall of a vessel, to emit a first ultrasound test signal; receive, from at least one ultrasound receiver, when attached to the wall of the vessel, the first ultrasound test signal; detect a time of flight of the received first ultrasound test signal; and determine that an acoustic coupling of the first ultrasound emitter and a first ultrasound receiver of the at least one ultrasound receiver to the wall of the vessel is intact if the detected time of flight corresponds to a length of a path in the wall of the vessel from the first ultrasound emitter to the at least one ultrasound receiver.
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公开(公告)号：US11796513B2
公开(公告)日：2023-10-24
申请号：US17529697
申请日：2021-11-18
Inventor： Liu Liu , Shaojun Li , Quan Jiang , Yaxun Xiao , Guangliang Feng
CPC classification number: G01N29/075 , G01N29/07 , G01N29/4463 , G01N29/12 , G01N2291/011 , G01N2291/012 , G01N2291/0232 , G01N2291/0258 , G01N2291/0289 , G01N2291/044 , G01N2291/103 , G01N2291/2691
Abstract: A dual channel nondestructive testing method for a rock bolt and related devices includes: determining a target phase difference and an instantaneous phase difference of the first received signal and the second received signal; determining an integral instantaneous phase difference between the first received signal and the second received signal based on the target phase difference and an instantaneous phase difference; determining a length of the exposed section of the rock bolt, a length of the rock bolt and a position of a grouting defect based on the integral instantaneous phase difference, a first velocity of the acoustic signal propagating in an exposed section of the rock bolt and a second velocity of the acoustic signal propagating in an anchor section of the rock bolt.
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公开(公告)号：US11761928B2
公开(公告)日：2023-09-19
申请号：US17473025
申请日：2021-09-13
Applicant: SUPERSONIC IMAGINE , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS , Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris
Inventor： William Lambert , Alexandre Aubry , Thomas Frappart , Flavien Bureau , Mathias Fink
CPC classification number: G01N29/0654 , G01N29/4463 , G10K11/28 , G01N2291/02475
Abstract: Method for ultrasonic characterization of a medium, comprising generating a series of incident ultrasonic waves, generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, and determining a focused reflection matrix RFoc(rin, rout, δt) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay δt relative to a time instant of the responses of the input virtual transducer (TVin).
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Patent Agency Ranking
公开(公告)号：US20230236156A1
公开(公告)日：2023-07-27
申请号：US18158769
申请日：2023-01-24
Applicant: Herzog Services, Inc.
Inventor： Andy White , Troy L. Elbert , Brent T. Applebury , Timothy J. Coolman , Jason Roe
IPC: G01N29/44 , G01N29/04 , G01N29/265
CPC classification number: G01N29/4463 , G01N29/04 , G01N29/265 , G01N2291/2623 , G01N2291/0289
Abstract: A roller search unit for detecting rail defects with integrated digital circuitry includes a liquid filled tire mounted to an axle assembly with wheels. An ultrasonic transducer array positioned within a housing is positioned within the within the tire and coupled to the axle. The housing contains transducer interface circuitry operable to receive analog signals from the ultrasonic transducer array and contains digital flaw detection circuitry operable to convert the analog signals to digital signals and perform analysis on the digital signals to detect flaws in a rail. The transducer interface circuitry and digital flaw detection circuitry are configured to stack to provide a compact, small footprint assembly. The conversion of the transducer signals from analog to digital within the tire permits transmission of the digitized data without susceptibility to interference and noise.
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公开(公告)号：US20190242858A1
公开(公告)日：2019-08-08
申请号：US16270441
申请日：2019-02-07
Inventor： Setsu YAMAMOTO , Jun SEMBOSHI , Azusa SUGAWARA , Kentaro TSUCHIHASHI , Masaru OTSUKA
CPC classification number: G01N29/262 , B06B1/0607 , G01H5/00 , G01N29/043 , G01N29/0609 , G01N29/07 , G01N29/32 , G01N29/343 , G01N29/4463 , G01N2291/011 , G01N2291/015 , G01N2291/023 , G01N2291/0289 , G01N2291/044 , G01N2291/106 , G01N2291/2638
Abstract: According to embodiments, an ultrasonic inspection apparatus comprises: an ultrasonic array probe having a plurality of ultrasonic elements; an estimated shape reflected wave arrival time calculator for computing the estimated shape reflected wave arrival time for the estimated shape reflected wave on the basis of the estimated sound velocity in the test object; an actual shape reflected wave arrival time extractor for extracting the actual shape reflected wave arrival time on the basis of the actual shape reflected wave; a shape reflected waves time difference calculator for computing the difference by subtracting the actual shape reflected wave arrival time from the estimated shape reflected wave arrival time as shape reflected waves time difference; and a delay time calculator for computing the delay times for mutually shifting the timings of ultrasonic wave transmission and ultrasonic wave reception by the ultrasonic elements, considering the shape reflected waves time differences.
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公开(公告)号：US20180348170A1
公开(公告)日：2018-12-06
申请号：US15994528
申请日：2018-05-31
Applicant: Nicolas Badeau , Guillaume Painchaud-April , Benoit Lepage
Inventor： Nicolas Badeau , Guillaume Painchaud-April , Benoit Lepage
CPC classification number: G01N29/262 , G01N29/043 , G01N29/069 , G01N29/07 , G01N29/4436 , G01N29/4463 , G01N2291/011 , G01N2291/044 , G01N2291/106
Abstract: Disclosed is a system and method of determining the test surface profile and compensating the gain amplitude when using time reversal focal laws in ultrasound non-destructive testing. Computer simulations are used to compute the diffraction field at time of incidence of the transmitted parallel wave front on the test surface. Knowledge of the surface profile and the diffraction field allows determination of coverage at the test surface and improved accuracy of flaw sizing.
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公开(公告)号：US20180217109A1
公开(公告)日：2018-08-02
申请号：US15420933
申请日：2017-01-31
Applicant: Computational Systems, Inc.
Inventor： Stewart V. Bowers, III , William A. Davis
CPC classification number: G01N29/4463 , G01N29/04 , G01N29/14 , G01N29/40 , G01N29/4427 , G01N29/4445 , G01N29/449 , G01N29/46 , G01N2291/015 , G01N2291/023 , G01N2291/0258
Abstract: Vibration data indicative of the health of a machine is collected using a vibration sensor connected to a vibration data collector. After the vibration sensor has been attached to a measurement point on the machine, vibration data is collected that includes a bin of data having a begin time and an end time, and the vibration data is stored in memory of the vibration data collector. First and second average amplitudes of the bin of vibration data collected during first and second time windows in the measurement time period are determined. The slope of the vibration data is calculated based on the ratio of the amplitude difference between the first and second average amplitudes and the time difference between the first and second time windows. The vibration data is either retained in the memory or discarded based on the comparison of the slope to a threshold level.
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公开(公告)号：US20170356882A1
公开(公告)日：2017-12-14
申请号：US15541338
申请日：2015-12-29
Applicant: UNIVERSIDAD DE CHILE
Inventor： Néstor BECERRA YOMA , Muhammad Salman KHAN , Walid Gad Barakat HUSSEIN , Felipe Sebastián ESPIC CALDERÓN , Juan Antonio ZAMORANO NAVARRO
IPC: G01N29/036 , G01N29/42 , G01N29/44
CPC classification number: G01N29/036 , G01N29/222 , G01N29/348 , G01N29/42 , G01N29/4445 , G01N29/4463 , G01N29/4481 , G01N29/46 , G01N2291/02433 , G01N2291/02845 , G01N2291/102
Abstract: The present invention is related to a device and a method using said device for the measurement and classification of bubble sizes in a liquid medium. This invention comprises two electric emitter and receiver transducers located at an angle lower than 180 degrees one with respect to the other, and ultrasonic signal emitter and receiver circuits operatively connected to the electric emitter and receiver transducer respectively. The classification of the bubble sizes is based on two-dimensional time domain patterns that represent the trace of the bubbles when they cross a generated ultrasonic field. This invention is of great utility to track processes involving the generation of bubbles in liquid media such as the froth flotation in mining.
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