公开(公告)号：US20180348059A1

公开(公告)日：2018-12-06

申请号：US15949037

申请日：2018-04-09

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Chao WANG ,  Zezhan ZHANG ,  Fei WANG ,  Chengui ZHANG ,  Jun HU ,  Yang YANG ,  Jing JIANG ,  Hongchuan JIANG ,  Yueming WANG ,  Yuhua CHENG ,  Jiexiong DING ,  Li DU ,  Houjun WANG

IPC: G01J5/08 ,  G01J5/06 ,  G01N21/27

CPC classification number: G01J5/0806 ,  G01J3/36 ,  G01J5/0088 ,  G01J5/029 ,  G01J5/047 ,  G01J5/06 ,  G01J5/0809 ,  G01J5/0821 ,  G01J5/0865 ,  G01J5/522 ,  G01J5/602 ,  G01N21/253 ,  G01N21/255 ,  G01N21/274

Abstract: An apparatus for measuring temperature of turbine blades, including: a radiation collection device, a data processing module; a master control unit (MCU); a calibration module; and a motion servo. The radiation collection device includes a scan reflector, a collimator lens, a first dichroic mirror, a first focus lens, a visible and near-infrared (VNIR) detector, a second dichroic mirror, a second focus lens, a short-wave infrared (SWIR) detector, a third focus lens, and a medium-wave infrared (MWIR) detector. The calibration module includes a calibration reflection mirror and a blackbody furnace. The scan reflector, the collimator lens, the first dichroic mirror, the second dichroic mirror, the third focus lens, and the MWIR detector are disposed successively along a first optical axis; the first dichroic mirror, the first focus lens, and the VNIR detector are disposed successively along a second optical axis that is perpendicular to the first optical axis.

公开(公告)号：US20180335403A1

公开(公告)日：2018-11-22

申请号：US15681186

申请日：2017-08-18

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Yuhua CHENG ,  Libing BAI ,  Yonggang WANG ,  Jie ZHANG ,  Chun YIN ,  Shuai SHI ,  Xue CHEN

IPC: G01N27/82

Abstract: The present invention provides a method for simulating magnetic flux leakage based on loop current, the magnetic distribution of a single loop current is obtained by solid angle, then the magnetic field distribution of a semi-infinite solenoid is obtained based on the assumption of arrangement of loop currents in the magnetized specimen, and its equation is given; and the JA hysteresis model is introduced to obtain the distribution of quasi-static magnetic flux leakage field, on the basis of analyzing the relation between the distribution of a loop current on the surface of the defect and the excitation magnetic field, the distribution of quasi-static magnetic flux leakage field is obtained based on the semi-infinite solenoid.