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公开(公告)号：US11131651B2
公开(公告)日：2021-09-28
申请号：US16427389
申请日：2019-05-31
Inventor： Hoon Sohn , Peipei Liu , Jinho Jang
Abstract: In a method of inspecting a structure, a first ultrasonic signal generated from a target structure by a first laser beam is received. The first ultrasonic signal is generated by providing the first laser beam generated from a first excitation unit to the target structure. A second ultrasonic signal generated from the target structure by a second laser beam different from the first laser beam is received. The second ultrasonic signal is generated by providing the second laser beam generated from a second excitation unit to the target structure. A third ultrasonic signal generated from the target structure by the first and second laser beams is received. The third ultrasonic signal is generated by simultaneously providing the first and second laser beams to the target structure. It is determined whether the target structure is damaged based on first, second and third ultrasonic frequency spectra that are obtained by converting the first, second and third ultrasonic signals, respectively.
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公开(公告)号：US20210262988A1
公开(公告)日：2021-08-26
申请号：US17261673
申请日：2019-07-09
Applicant: Siemens Energy Global GmbH & Co. KG
Inventor： Ingo Balkowski , Ralf Bell , Uwe Pfeifer
Abstract: A method for performing a resonance test on a multicomponent component wherein fast and simple classification of the state of the component is ensured by carrying out the resonance test in an automated manner on blade assemblies, in which frequency images of new and used components are compared with each other. For performing a resonance test by direct mechanical excitation of a multicomponent component in the initial state, relevant acoustic parameters of the airborne sound are determined or are numerically computed and deposited in a database. The method includes performing an excitation of a component after use in order to produce structure-borne vibrations in the component and the airborne sound resulting therefrom, measuring the airborne sound by a spaced-apart microphone, determining the relevant acoustic parameters, wherein this is compared with the initial state, and deviations are detected.
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公开(公告)号：US11092573B2
公开(公告)日：2021-08-17
申请号：US16009255
申请日：2018-06-15
Applicant: Luna Innovations Incorporated
Inventor： Matthew Ryan Webster , Kevin Farinholt , Gheorghe Bunget
Abstract: An inspection apparatus detects one or more characteristics of a material sample and includes a transmitter to transmit an initial signal to the material sample, and a receiver to receive a detected signal from the material sample associated with the initial signal. The detected signal has at least a first harmonic signal component and a second harmonic signal component. Data processing circuitry determines a resonant frequency of the first harmonic signal component and an amplitude of the first harmonic signal component at the resonant frequency, and filters the detected signal using a first filter signal having a frequency corresponding to the first harmonic signal component and a second filter signal having a frequency corresponding to the second harmonic signal component. A frequency analysis is performed in the frequency domain on the filtered first and second signals to determine corresponding first and second amplitudes. The first and second amplitudes may be compensated for nonlinearity. One or more nonlinear parameters are determined based on the first and second amplitudes. A user interface communicates one or more characteristics of the material sample based on the first and second compensated amplitudes.
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公开(公告)号：US11085899B2
公开(公告)日：2021-08-10
申请号：US16014934
申请日：2018-06-21
Applicant: PIPELINES 2 DATA (P2D) LIMITED , HYDRASON SOLUTIONS LIMITED
Inventor： Steve Mayo , Nigel Money , Chris Capus , Yan Pailhas
Abstract: The invention provides a method and apparatus for assessing a condition of a fluid conduit from its interior. The method comprises providing a measurement apparatus comprising at least one wideband acoustic transducer within the fluid conduit and transmitting a wideband acoustic signal from the measurement apparatus to excite a broadside resonance in at least a portion of the fluid conduit. A wideband acoustic signal is received in the measurement apparatus due to a broadside resonant response of the fluid conduit to obtain a wideband acoustic data set; and the data set is analysed to assess the condition of the fluid conduit.
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公开(公告)号：US20210215645A1
公开(公告)日：2021-07-15
申请号：US17215812
申请日：2021-03-29
Applicant: Latency, LLC
Inventor： Peter Owens , David Micallef
Abstract: Mechanism, which can include systems, methods, and media, for generating an alert of a water hammer event in a steam pipe are provided, the mechanisms comprising: sampling an accelerometer coupled to a steam pipe to provide accelerometer data; determining that the accelerometer data meets or exceeds a threshold; and generating an alert that a water hammer event has occurred based at least in part on the accelerometer data. In some of the mechanisms, the sampling of the accelerometer is performed for a given period of time, and the mechanisms further comprise sampling an ultrasonic sensor for the given period of time to provide ultrasonic sensor data, and wherein the generating the alert is based at least in part on the accelerometer data and the ultrasonic sensor data.
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Patent Agency Ranking
公开(公告)号：US11060998B2
公开(公告)日：2021-07-13
申请号：US16333273
申请日：2018-12-04
Applicant: Purdue Research Foundation
Inventor： Jeffrey Frederick Rhoads , George Tsu-Chih Chiu , Nikhil Bajaj
IPC: G01N29/12 , G01N29/036
Abstract: This present disclosure relates to sensors capable of sensing mass, stiffness, and chemical or biological substances. More specifically, this disclosure provides the design and implementation of a piecewise-linear resonator realized via diode- and integrated circuit-based feedback electronics and a quartz crystal resonator. The proposed system is fabricated and characterized, and the creation and selective placement of the bifurcation points of the overall electromechanical system is demonstrated by tuning the circuit gains. The demonstrated circuit operates around at least 1 MHz.
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公开(公告)号：US11029781B2
公开(公告)日：2021-06-08
申请号：US16726682
申请日：2019-12-24
Applicant: ESW HOLDINGS, INC.
Inventor： Amit Gross , Oded Rozenberg , Moshe Lipsker
IPC: G06F3/041 , G01N29/12 , G01N29/46 , G01N29/14 , G06F3/0488
Abstract: A method and system for detecting imperfections on a surface of a touchscreen of an electrical device, comprising: swiping a test object, such as a fingertip, a fingernail or a pin, along at least a portion of the touchscreen; producing, by the touchscreen, an electric signal indicative of the test object's contact with the touchscreen; receiving an acoustic signal by an acoustic sensor, during the swipe of the test object along the touchscreen; analyzing, by a processor, at least one of the electric signal and received acoustic signal; and determining existence of imperfections on the touchscreen's surface based on the analysis.
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公开(公告)号：US11029286B2
公开(公告)日：2021-06-08
申请号：US16467376
申请日：2017-07-03
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Renke Kang , Zhigang Dong , Xianglong Zhu , Yidan Wang , Xun Zhang , Ping Zhou , Zhenyuan Jia
Abstract: An ultrasonic cutter detection method and device, the method comprises the following steps: preliminary detection: frequency amplitude detection and fall-of-potential detection, if the ultrasonic cutter fails the above two detection solutions in the preliminary detection, repeating the two detections; if the ultrasonic cutter still fails the above two detection solutions, the ultrasonic cutter is judged to be unqualified; and reinspection: free modal detection and pressure modal detection. Using differences of the ultrasonic cutters surface in micro-crack directions that result in different degrees of sensitivity of crack to different ultrasonic vibration modes, combined with the fall-of-potential method and frequency amplitude detection method, a detection rate and a detection velocity of an unqualified ultrasonic cutter can be improved.
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公开(公告)号：US20210164943A1
公开(公告)日：2021-06-03
申请号：US17104943
申请日：2020-11-25
Applicant: Hitachi-GE Nuclear Energy, Ltd.
Inventor： Sou KITAZAWA , Yasuhiro NIDAIRA , Kazuya EHARA , Junichiro NAGANUMA
Abstract: An ultrasonic inspection method in which a pulse signal is output to an ultrasonic sensor to generate and transmit ultrasonic waves, the ultrasonic waves reflected or scattered by an object are received and converted into a waveform signal by the ultrasonic sensor, and the waveform signal is digitized to acquire waveform data, includes: executing modulation processing for modulating a plurality of waveform data acquired in multiple inspections and under the same inspection conditions by a phase modulation method to generate composite waveform data; and executing demodulation processing for demodulating the composite waveform data to generate compressed waveform data.
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公开(公告)号：US11020954B2
公开(公告)日：2021-06-01
申请号：US16703467
申请日：2019-12-04
Applicant: United Technologies Corporation
Inventor： JinQuan Xu
IPC: B33Y50/02 , G01N29/12 , G01N29/44 , G01N29/04 , B33Y10/00 , G01H13/00 , B22F10/00 , B33Y30/00 , B22F3/24 , F01D5/00 , F01D5/28 , B23K15/00 , F01D5/14 , F01D9/02 , F01D11/08 , B22F10/10
Abstract: A method of additive manufacturing comprises determining a first resonant frequency of an unflawed reference workpiece at a first partial stage of completion, fabricating a production workpiece to the first partial stage of completion via additive manufacture, sensing a second resonant frequency of the production workpiece in-situ at the first partial stage of completion, during the fabrication, analyzing the workpiece for flaws based on comparison of the first and second resonant frequencies, and providing an output indicative of production workpiece condition, based on the analysis.
An additive manufacturing system comprises an additive manufacturing tool, a sensor, and a controller. The additive manufacturing tool is disposed to construct a workpiece via iterative layer deposition. The sensor is disposed to determine a resonant frequency of the workpiece in-situ at the additive manufacturing tool, during fabrication. The controller is configured to terminate manufacture of the workpiece if the resonant frequency differs substantially from a reference frequency.
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