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公开(公告)号：US12117419B2
公开(公告)日：2024-10-15
申请号：US17949564
申请日：2022-09-21
发明人： Azhar Mehmood Memon
CPC分类号： G01N29/2412 , G01N29/11 , G01N2291/2636
摘要： A method for detecting internal coating defects in a pipe sample with an electromagnetic acoustic transducer sensor. The method includes recording a plurality of Lamb mode scans of the pipe sample with the EMAT sensor, where each Lamb mode scan is measured along a length of the pipe sample in axial alignment with the pipe sample; and processing the Lamb mode scans by applying a singular spectrum analysis to the Lamb mode scans to generate data from which the internal coating defects in the pipe sample are identified. The Lamb mode scans are at a frequency from dispersion curve of from 0.3 to 2 MHz, at a frequency of from 0.4 MHz to 2 MHz, a group velocity of from 1 mm/μs to 3 mm/μs, a phase velocity of from 5 mm/μs to 25 mm/μs, and a wave count of from 3 to 10.
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公开(公告)号：US12066407B2
公开(公告)日：2024-08-20
申请号：US17605991
申请日：2020-04-13
IPC分类号： G01N29/24
CPC分类号： G01N29/2412 , G01N2291/02854 , G01N2291/0422
摘要： This invention provides a method for finding the remnant thickness of a structure. A feature of guided waves known as the cut-off property is used to determine the remnant thickness of structures. Fundamental guided wave modes do not possess cut-off property, but higher order modes do. The cut-off thickness of a particular mode is the minimum thickness required for that mode to travel through the guided medium. The invention uses a wide-bands of frequency and wavelength to generate the modes using appropriate magnets and excitation signal shape to provide a low cost and rapid evaluation of remnant thickness of structure.
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公开(公告)号：US12025585B2
公开(公告)日：2024-07-02
申请号：US17756491
申请日：2020-11-04
发明人： Henning Heuer , Frank Schubert , Marcel Wild
IPC分类号： G01N29/14 , B29C48/92 , G01N29/07 , G01N29/24 , G01N29/27 , G01N29/28 , G01N29/34 , G01N29/42 , G01N29/50
CPC分类号： G01N29/07 , B29C48/92 , G01N29/14 , G01N29/2412 , G01N29/27 , G01N29/28 , G01N29/348 , G01N29/42 , G01N29/50 , B29C2948/92114 , B29C2948/9219 , B29C2948/922 , B29C2948/9238 , G01N2291/011 , G01N2291/015 , G01N2291/02818 , G01N2291/103
摘要： In a measuring arrangement for determining properties of a material to be extruded while an extrusion process is being carried out in an extruder, at least one extruder screw is rotatably mounted in a tubular guide in a barrel and is connected to a rotary drive. Material to be extruded is fed to the tubular guide at one end and is removed as finish-extruded material at an oppositely arranged discharge. Arranged at measuring positions at predeterminable defined intervals on the wall of the tubular guide along the longitudinal axis of the extruder screw are multiple first sound transducers, which are designed for the detection of sound waves that are generated during the extrusion process by the extrusion process as process noises and/or are emitted by a second sound transducer, arranged at one end of the tubular guide, in the direction of the longitudinal axis of the extruder screw and into the material to be extruded that is conveyed through a mixing chamber present in the tubular guide.
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公开(公告)号：US20240125742A1
公开(公告)日：2024-04-18
申请号：US17965574
申请日：2022-10-13
CPC分类号： G01N29/2412 , G01N29/041 , G01N29/043 , G01N29/07 , G01N29/4472 , G01N29/46 , G01N2291/0289 , G01N2291/0422 , G01N2291/0425 , G01N2291/0427
摘要： A system and method for sizing defects in solid structures using guided waves. The system includes a magnetostrictive-strip EMAT transducer comprising at least one biasing static magnetic field, at least one RF coil for fixed-wavelength measurements, at least one RF coil for variable-wavelength measurements, and a strip of highly magnetostrictive material that is coupled with the structure. The fixed-wavelength RF coil permits obtaining measurements of amplitude and frequency content of signals reflected and/or attenuated when traveling through the structure which are used to estimate the size and geometry of any defects in this structure. The variable-wavelength RF coil permits recording the frequencies that are cut off or pass through the structure to also estimate the size of any defects in the structure. The fixed-wavelength sizing and geometry assessment is used to determine whether the variable-wavelength estimate is valid. The final assessment is based on the fixed-wavelength estimate, the variable-wavelength estimate, or a combination of both.
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5.发明公开公开(公告)号：US20230288374A1
公开(公告)日：2023-09-14
申请号：US18108740
申请日：2023-02-13
发明人： Pierre BELANGER , André DIONNE , Aurèlien THON
CPC分类号： G01N29/041 , G01B17/02 , G01N29/07 , G01N29/2412 , G01N2291/011 , G01N2291/0234 , G01N2291/02854 , G01N2291/0289 , G01N2291/106
摘要： A method and a system for nondestructive testing of a structure are provided. At least one ultrasonic probe is driven to cause at least one shear horizontal (SH) guided wave to propagate in the structure. At least one reflected guided wave signal is received from the structure to the at least one ultrasonic probe being driven. A comparison between an amplitude of the at least one reflected guided wave signal and an amplitude threshold is performed. A thickness of the structure is determined based on the comparison and a presence or an absence of at least one defect in the structure is detected based on the thickness as determined.
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公开(公告)号：US11740155B2
公开(公告)日：2023-08-29
申请号：US16761230
申请日：2018-10-15
发明人： Bastien Chapuis , Tom Druet
CPC分类号： G01M5/0066 , G01N29/0672 , G01N29/14 , G01N29/2412 , G01N29/2437 , G01N29/2475 , G01N29/46 , G06F17/156 , G06T7/0002 , G01N2291/0231 , G01N2291/0289 , G01N2291/02827 , G01N2291/2694 , G06T2207/10072
摘要： Methods and systems for analyzing an industrial structure are provided. With a plurality of sensors (e.g. FBGs and/or piezoelectric transducers and/or electromagnetic acoustic transducers) deployed in, on or in proximity to the structure, sensors are interrogated and a function representative of the impulse response of the structure is determined by passive inverse filter. Subsequently, a map of the propagation of the elastic waves through the structure is determined via various modalities, and in particular by tomography (of bulk or guided waves, by analysis of time of flight or of the complete signal). Embodiments especially relate to the management of the number and position of the sensors, to the use of artificial noise sources, and to automatically controlling the sensors and/or noise sources to monitor the health of the structure, or even to view the dynamic behavior of the structure.
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7.发明申请公开(公告)号：US20190187104A1
公开(公告)日：2019-06-20
申请号：US15845497
申请日：2017-12-18
发明人： Sergey A. VINOGRADOV , Adam C. COBB , Jonathan D. BARTLETT , Greg A. BUSTAMANTE , Douglas R. Earnest , Clinton J. THWING
CPC分类号： G01N29/2431 , G01N29/04 , G01N29/043 , G01N29/2412 , G01N29/265 , G01N29/28 , G01N2291/0425 , G01N2291/044
摘要： A guided wave probe for use in guided wave testing of plate structures. The probe comprises a cup having a flat or nearly flat bottom, and a guided wave sensor, such as a magnetostrictive sensor, placed in the bottom of the cup. The sensor and/or cup are coupled to the plate structure, such that ultrasonic energy from the sensor is transmitted to the cup and the plate surface. The sensor is incrementally rotated in the cup, and sensor data is acquired at each incremental position.
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公开(公告)号：US20180292285A1
公开(公告)日：2018-10-11
申请号：US16006451
申请日：2018-06-12
发明人： Volker Frueh
IPC分类号： G01M3/00 , F16L55/40 , G01N29/265 , G01N29/24
CPC分类号： G01M3/005 , F16L55/40 , F17D5/06 , G01M3/246 , G01N29/043 , G01N29/225 , G01N29/2412 , G01N29/265 , G01N2291/044 , G01N2291/106 , G01N2291/2636
摘要： A sensor carrier module for use in a pipeline pig may include a plurality of skids arranged about an axis of the sensor carrier module, and a flexible section. Each skid typically includes an upstream end, a downstream end, and at least one sensor between the upstream end and the downstream end. Each sensor may be configured to sense a parameter of a wall of a pipeline. The flexible section may be attached to the downstream ends of the skids and to a flange. The flexible section may include wheels configured to roll along the interior surface of the pipeline as the sensor carrier module passes through the pipeline, and a force system to apply a radial force that urges the wheels to interface with the interior surface of the pipeline.
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公开(公告)号：US10073065B2
公开(公告)日：2018-09-11
申请号：US14786809
申请日：2014-04-10
CPC分类号： G01N29/2412 , B06B1/08 , B06B1/085 , G01N29/04 , G01N2291/023 , G01N2291/0289 , G01N2291/2634
摘要： The invention relates to a continuous monitoring system which will monitor the pipes without the need of shutting down of the plants. The major issues in designing such a system using magnetostriction as per prior art is the loss of magnetization of the permanent magnets used to provide the magnetic bias and also the disbonding of interfaced adhesives with which the magnetostrictive ribbons are bonded at high temperatures. The invention identifies a novel sensor which can be taken up to high temperatures without any loss of signal strength, this is achieved by generating guided waves using a special amorphous magnetostrictive ribbons. L(0, 2) mode waves are generated using these ribbons to monitor pipes working at high temperatures as per the invention.
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公开(公告)号：US10036680B2
公开(公告)日：2018-07-31
申请号：US14997125
申请日：2016-01-15
发明人： Volker Frueh
CPC分类号： G01M3/005 , F16L55/40 , F17D5/06 , G01M3/246 , G01N29/043 , G01N29/225 , G01N29/2412 , G01N29/265 , G01N2291/044 , G01N2291/106 , G01N2291/2636
摘要： A sensor carrier module for use in a pipeline pig may include a plurality of skids arranged about an axis of the sensor carrier module, and a flexible section. Each skid typically includes an upstream end, a downstream end, and at least one sensor between the upstream end and the downstream end. Each sensor may be configured to sense a parameter of a wall of a pipeline. The flexible section may be attached to the downstream ends of the skids and to a flange. The flexible section may include wheels configured to roll along the interior surface of the pipeline as the sensor carrier module passes through the pipeline, and a force system to apply a radial force that urges the wheels to interface with the interior surface of the pipeline.
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