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公开(公告)号：US10338035B2
公开(公告)日：2019-07-02
申请号：US15831894
申请日：2017-12-05
发明人： Songling Huang , Kai Song , Wei Zhao , Chao Lu , Yu Zhang , Shen Wang , Jiarui Dong , Zhe Wang
摘要： An imaging method based on guided wave scattering of omni-directional EMATs includes: selecting an nth omni-directional EMAT from N omni-directional EMATs uniformly arranged in a detection region of a metal plate to be detected as an excitation EMAT; selecting m omni-directional EMATs as omni-directionally receiving EMATs to omni-directionally receive an ultrasonic guided wave signal, and calculating a travel time and intensity of the ultrasonic guided wave signal; judging whether the excitation EMAT and the omni-directionally receiving EMATs form a scattering group, if yes, calculating a position of a scattering point; judging whether the position of the scattering point is within a preset scattering region, if yes, determining the position of the scattering point as an effective scattering point; repeating the above steps until all N omni-directional EMATs have excited omni-directional ultrasonic guided waves, and performing curve fitting on all effective scattering points to obtain a defect profile image.
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2.发明申请公开(公告)号：US20180231503A1
公开(公告)日：2018-08-16
申请号：US15831894
申请日：2017-12-05
发明人： Songling Huang , Kai Song , Wei Zhao , Chao Lu , Yu Zhang , Shen Wang , Jiarui Dong , Zhe Wang
CPC分类号： G01N29/2412 , G01N29/048 , G01N29/069 , G01N29/07 , G01N29/11 , G01N29/4418 , G01N29/4427
摘要： An imaging method based on guided wave scattering of omni-directional EMATs includes: selecting an nth omni-directional EMAT from N omni-directional EMATs uniformly arranged in a detection region of a metal plate to be detected as an excitation EMAT; selecting m omni-directional EMATs as omni-directionally receiving EMATs to omni-directionally receive an ultrasonic guided wave signal, and calculating a travel time and intensity of the ultrasonic guided wave signal; judging whether the excitation EMAT and the omni-directionally receiving EMATs form a scattering group, if yes, calculating a position of a scattering point; judging whether the position of the scattering point is within a preset scattering region, if yes, determining the position of the scattering point as an effective scattering point; repeating the above steps until all N omni-directional EMATs have excited omni-directional ultrasonic guided waves, and performing curve fitting on all effective scattering points to obtain a defect profile image.
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公开(公告)号：US10436753B2
公开(公告)日：2019-10-08
申请号：US15862771
申请日：2018-01-05
摘要： A method for adjusting array of omnidirectional EMATs includes: uniformly arranging N EMATs in a detection region of a metal plate; calculating positions of scattering points according to amplitudes and travel times of guided wave scattering signals, and forming a first defect profile curve by performing three smooth spline interpolations on coordinate data of positions of scattering points; calculating curvatures of points on the first defect profile curve by solving a first and second derivatives of a function of the first defect profile curve; determining an array adjustment region by comparing the curvature with a preset threshold, adjusting the array and calculating a second defect profile curve; and performing data fusion on the first and second defect profile curves to form a defect profile image of the metal plate.
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公开(公告)号：US10605790B2
公开(公告)日：2020-03-31
申请号：US15665535
申请日：2017-08-01
申请人： Tsinghua University
发明人： Songling Huang , Wei Zhao , Yu Zhang , Qing Wang , Shen Wang
IPC分类号： G01N29/44 , G01N29/24 , G01N29/07 , G01N29/12 , F03D17/00 , F03D80/50 , G01N29/04 , G01N29/22 , G01N29/26 , G01N29/34
摘要： The present disclosure provides a device and method for detecting a defect in a main shaft of a wind turbine. The device includes: an excitation source, configured to generate an electromagnetic ultrasonic guided wave signal; a nickel strap, magnetized and disposed on an outer surface of an end of the main shaft; a coil, disposed at the nickel strap, configured to receive the electromagnetic ultrasonic guided wave signal such that the electromagnetic ultrasonic guided wave signal propagates in the main shaft, the coil and the nickel strap being configured to transform the electromagnetic ultrasonic guided wave signal propagating in the main shaft into an electrical signal by electromagnetic induction; a signal collector, configured to collect the electrical signal and transform the electrical signal into guided wave detection data and a wireless communication component, configured to transmit the guided wave detection data to a remote equipment.
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公开(公告)号：US10338160B2
公开(公告)日：2019-07-02
申请号：US15840650
申请日：2017-12-13
申请人： Tsinghua University
发明人： Songling Huang , Wei Zhao , Shen Wang , Lisha Peng , Yu Zhang , Xinjie Yu , Jun Zou , Lin Gui , Fuping Wang
摘要： A high-precision imaging and detecting device for detecting a small defect of a pipeline by a helical magnetic matrix. The device includes: a helical excitation module including a helical excitation coil; a magnetic matrix detection module, disposed at an inner side of the helical excitation coil and including at least one magnetic sensor group arranged at intervals along an axial direction of the helical excitation coil, group including a plurality of magnetic sensors evenly spaced apart and arranged along a circumferential direction of the helical excitation coil, and the magnetic sensor being configured to detect an induction magnetic field of the pipeline; a signal processing module, connected with the magnetic matrix detection module, and configured to receive, process and output an induction magnetic field signal of the pipeline detected by the magnetic sensor.
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公开(公告)号：US10962504B2
公开(公告)日：2021-03-30
申请号：US15829586
申请日：2017-12-01
申请人： Hubei University of Technology , Tsinghua University , China Special Equipment Inspection and Research Institute , Eddysun (Xiamen) Electronic Co., Ltd. , Huazhong University of Science and Technology
发明人： Songling Huang , Xiaochun Song , Gongtian Shen , Wei Zhao , Junming Lin , Yihua Kang , Yu Zhang , Shen Wang
摘要： Disclosed are a method and device for compressing and reconstructing data. The method includes: disposing a transmitting EMAT array and a receiving EMAT array; exciting a Lamb wave, receiving the Lamb wave, subjecting the Lamb wave to narrowband filtering with the narrowband frequency, to form detecting data x(n); analysing the detecting data with a DFT; reconstructing original detecting data and calculating a reconstruction error according to the measurement vector and the recovery matrix by using a TLBO algorithm; optimizing measurement vector and recovery matrix; transmitting the measurement vector to a supervisory device.
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7.发明申请公开(公告)号：US20190004124A1
公开(公告)日：2019-01-03
申请号：US15840650
申请日：2017-12-13
申请人： Tsinghua University
发明人： Songling HUANG , Wei Zhao , Shen Wang , Lisha Peng , Yu Zhang , Xinjie Yu , Jun Zou , Lin Gui , Fuping Wang
CPC分类号： G01R33/091 , F17D5/06 , G01M3/40 , G01R33/098
摘要： A high-precision imaging and detecting device for detecting a small defect of a pipeline by a helical magnetic matrix. The device includes: a helical excitation module including a helical excitation coil; a magnetic matrix detection module, disposed at an inner side of the helical excitation coil and including at least one magnetic sensor group arranged at intervals along an axial direction of the helical excitation coil, group including a plurality of magnetic sensors evenly spaced apart and arranged along a circumferential direction of the helical excitation coil, and the magnetic sensor being configured to detect an induction magnetic field of the pipeline; a signal processing module, connected with the magnetic matrix detection module, and configured to receive, process and output an induction magnetic field signal of the pipeline detected by the magnetic sensor.
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