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公开(公告)号：US20220230265A1
公开(公告)日：2022-07-21
申请号：US17648257
申请日：2022-01-18
发明人： Alain Le Duff
摘要： Examples described herein include adding a digital watermark into acoustic data. For example, the digital watermark data can be embedded using a key such that the watermark data is spread across a spectrum of the acoustic data. Thus, the data for the digital watermark may have no or minimal visible impact in the images generated using the marked acoustic data. The digital watermark may provide improved security and privacy. Moreover, the digital watermark may be incorporated into the reconstruction process of images.
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公开(公告)号：US11378550B2
公开(公告)日：2022-07-05
申请号：US17035796
申请日：2020-09-29
发明人： Andrew J. Rae , Eric Zillinger
摘要： A system and method used to image cylindrical fluid conduits, such as pipes, wellbores and tubulars, with ultrasound transducers then process the ultrasound images to detect edges and surfaces. The device and method compute monotonic paths through high energy pixels. Functions are used for dropping, extending and selecting an optimal path based on certain criteria, such as path length, path continuity and path energy. The selected path may be used to model and visualize the tubular along with key features, components and defects in 2D and 3D.
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公开(公告)号：US20220205953A1
公开(公告)日：2022-06-30
申请号：US17612162
申请日：2020-05-22
发明人： Daniele PIRAS , Paul Louis Maria Joseph VAN NEER , Benoit Andre Jacques QUESSON , Laurent FILLINGER , Kodai HATAKEYAMA , Sri Ram Shankar RAJADURAI , Maarten Hubertus VAN ES , Abbas MOHTASHAMI
摘要： The present document relates to a heterodyne scanning probe microscopy (SPM) method for subsurface imaging, and includes: applying, using a transducer, an acoustic input signal to the sample, wherein the acoustic input signal has a frequency of at least 1 gigahertz; sensing an acoustic output signal using a probe, the probe including a cantilever and a probe tip, wherein the probe tip is in contact with the surface, wherein the acoustic output signal is representative of acoustic waves responsive to the acoustic input signal that are measurable at the surface; wherein the acoustic input signal is applied to the sample comprising a distinct pulse of acoustic energy followed by a relaxation period, wherein an acoustic power of the acoustic input signal during the pulse is at least twice as large as an acoustic power during the relaxation period. The present document further relates to a scanning probe microscopy method.
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公开(公告)号：US20220205952A1
公开(公告)日：2022-06-30
申请号：US17514868
申请日：2021-10-29
发明人： Zhibo YANG , Mingfeng ZHU , Xuefeng CHEN , Shaohua TIAN , Ming LI , Xingwu ZHANG
摘要： The disclosure discloses a Lamb wave phased array focus-imaging method based on a frequency response function. In the method, a piezoelectric sensor array is arranged on a surface of a tested structure, the frequency response function of an excitation and acquisition pair formed by an excitation array element and an acquisition array element is calculated according to a full-band response signal, and a dispersion pre-compensation signal is constructed; the dispersion pre-compensation signal and the frequency response function are multiplied in a frequency domain to obtain a frequency domain pre-compensation response signal; and according to a distance from the acquisition array element to a focal point at the coordinates, the dispersion of the frequency domain pre-compensation response signal is post-compensated, so as to obtain a frequency domain dispersion post-compensation signal until all sensor excitation and acquisition pairs are traversed.
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公开(公告)号：US20220196604A1
公开(公告)日：2022-06-23
申请号：US17604241
申请日：2020-04-17
申请人： DMC Global Inc.
摘要： A method of identifying a bond boundary between a sound bond and weak bond in a multilayer article may include determining a plurality of positions on a surface of the article; for each position of the plurality of positions, obtaining a full-wave, time domain waveform of ultrasonic waves reflected from the article; and, for each pair of adjacent positions among the plurality of positions, determining whether there is a bond boundary between a first position and a second position based on a comparison of a waveform characteristic of a first waveform generated at the first position and the waveform characteristic of a second waveform generated at the second position; and in response to a determination that there is a bond boundary between the first position and the second position, determining a boundary position based on the first position and the second position and memorializing the boundary position.
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公开(公告)号：US20220180500A1
公开(公告)日：2022-06-09
申请号：US17601900
申请日：2019-04-17
申请人： Shimadzu Corporation
发明人： Koki YOSHIDA , Takahide HATAHORI , Kenji TAKUBO
摘要： This defect inspection apparatus (100) is provided with an excitation unit (1), a laser illumination unit (2), an interference unit (3), an imaging unit (35), and a control unit (4) for generating a moving image (61) related to the propagation of an elastic wave of an inspection target (7). The control unit is configured to perform control to display an identified measurement inappropriate region (81) in such a manner as to be distinguishable from a measurement appropriate region (82) in which the vibration state has been correctly acquired in the moving image (61).
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公开(公告)号：US11351628B2
公开(公告)日：2022-06-07
申请号：US16075000
申请日：2017-02-09
IPC分类号： B23K20/12 , G01N29/06 , G01N29/07 , G01N29/11 , G01N29/22 , G01N29/24 , G01N29/26 , G01N29/265 , G01N29/28 , G01N29/32
摘要： A wedge for on-line inspection of a weld includes a wedge body defining a coolant channel and at least one couplant channel, and a coolant input port in fluid connection with a first end of the coolant channel. The wedge body has a surface for disposing a phased array ultrasonic transducer comprising an array of ultrasonic elements. The coolant channel is formed in proximity to the surface for disposing the phased array ultrasonic transducer such that coolant flowing through the coolant channel maintains the phased array ultrasonic transducer below a predetermined temperature without obstructing the array of ultrasonic elements.
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58.发明授权公开(公告)号：US11346819B2
公开(公告)日：2022-05-31
申请号：US17261095
申请日：2019-07-16
申请人： Centre National de la Recherche Scientifique , ECOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS
发明人： Alexandre Aubry , Amaury Badon , Victor Barolle , Claude Boccara , Laura Cobus , Mathias Fink , William Lambert
摘要： In a first aspect, the present description relates to a system for non-invasively characterizing a heterogeneous medium using ultrasound, comprising at least one first array (10) of transducers configured to generate a series of incident ultrasound waves in a region of said heterogeneous medium and record the ultrasound waves which are backscattered by said region as a function of time, as well as a computing unit (42) which is coupled to said at least one first array of transducers and configured to: record an experimental reflection matrix defined between an emission basis at the input and the basis of the transducers at the output; determine, from said experimental reflection matrix, at least one first wideband reflection matrix defined in a focused base at the input and output; determine a first distortion matrix defined between said focused basis and an observation basis, said first distortion matrix resulting, directly or after a change of basis, from the term-by-term matrix product of said first wideband reflection matrix defined between said focused basis and an aberration correction basis, with the phase-conjugated matrix of a reference reflection matrix defined for a model medium, between the same bases; determine, from said first distortion matrix, at least one mapping of a physical parameter of said heterogeneous medium.
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公开(公告)号：US11313837B2
公开(公告)日：2022-04-26
申请号：US16954034
申请日：2018-12-13
发明人： Olivier Mesnil
摘要： A device for imaging defects in a structure includes N transmitters and P receivers to be distributed over at least one surface of the structure and a central unit controlling the transmitters and receivers to sequentially record Q≤N×P signals (S) obtained from electrical signals provided by the receivers of Q different transmitter/receiver pairs, after reception of mechanical waves transmitted by the transmitters of these Q pairs. It further stores Q first and Q second corresponding reference signals (SREF1, SREF2), representative of the structure without defects and differing by random noise. A central processing unit is programmed to: correlate each signal obtained with the corresponding first reference signal, in such a way as to construct an image of probabilities of defects; correlate each first reference signal with the corresponding second reference signal, in such a way as to construct a reference noisy image; and subtract the reference noisy image from the image of probabilities of defects.
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公开(公告)号：US20220084496A1
公开(公告)日：2022-03-17
申请号：US17473003
申请日：2021-09-13
申请人： SUPERSONIC IMAGINE , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS , Ecole Supérieure de Physique el de Chimie Industrielles de la Ville de Paris
摘要： 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, 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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