公开(公告)号：US11378548B2

公开(公告)日：2022-07-05

申请号：US17146703

申请日：2021-01-12

Applicant: Tsinghua University

Inventor： Songling Huang ,  Wenzhi Wang ,  Wei Zhao ,  Shen Wang ,  Zijing Huang ,  Xiaochun Song ,  Lisha Peng

IPC: G01N27/87 ,  G01N27/90

Abstract: A device and a method for testing a steel defect based on internal and external magnetic perturbation. The device includes: a magnetizer comprising a magnetization source and a magnet yoke, arranged on a surface of a sample, and configured to generate two types of typical magnetic field regions applied to testing based on internal and external magnetic perturbation; a double-row magnetic sensor probe, configured to collect internal and external magnetic perturbation data; a master controller, configured to perform pre-processing on the internal and external magnetic perturbation data, and store the pre-processed data; scanner wheels, configured to generate a sampling trigger pulse during scanning to enable the master controller to receive the internal and external magnetic perturbation data from the probes; and a host computer, configured to analyze the pre-processed data uploaded by the master controller to obtain a defect quantitative result.

公开(公告)号：US10788454B2

公开(公告)日：2020-09-29

申请号：US16044590

申请日：2018-07-25

Applicant: Hubei University of Technology ,  Tsinghua University

Inventor： Songling Huang ,  Xiaochun Song ,  Lisha Peng ,  Wei Zhao ,  Shen Wang ,  Xinjie Yu ,  Shisong Li

IPC: G01N27/83

Abstract: A method for identifying a defect opening profile includes: acquiring a vertical component of a magnetic flux leakage signal of a defect; identifying right-angle features and corresponding right-angle position points of the defect from the vertical component; obtaining all possible right-angle types at each right-angle position point of the defect according to the corresponding right-angle feature of the vertical component; traversing all the possible right-angle types at each right-angle position point to determine respective optimal right-angle type at each right-angle position point; and drawing the defect opening profile according to the respective optimal right-angle type at each right-angle position point.

公开(公告)号：US10962504B2

公开(公告)日：2021-03-30

申请号：US15829586

申请日：2017-12-01

Applicant: Hubei University of Technology ,  Tsinghua University ,  China Special Equipment Inspection and Research Institute ,  Eddysun (Xiamen) Electronic Co., Ltd. ,  Huazhong University of Science and Technology

Inventor： Songling Huang ,  Xiaochun Song ,  Gongtian Shen ,  Wei Zhao ,  Junming Lin ,  Yihua Kang ,  Yu Zhang ,  Shen Wang

IPC: G01N29/06 ,  G01N29/44 ,  G01N29/42 ,  G01N29/24 ,  G01N29/46

Abstract: 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.