公开(公告)号：US11493480B2

公开(公告)日：2022-11-08

申请号：US17068448

申请日：2020-10-12

申请人： Russell NDE Systems Inc.

发明人： David E. Russell ,  Yuwu Yu ,  Hoan Nguyen ,  Brian Thai ,  Daniel Lingnau ,  Ellen Jin

IPC分类号： G01N27/904 ,  G01N27/87

摘要： A probe including a plurality of links connected together in series, wherein the plurality of links create a flexible compartment containing at least a first and second exciter means and at least one pair of detector means, wherein the exciter means are driven by an alternating current to produce an alternating magnetic field, and the detector means are configured to detect the magnetic field of an induced eddy current caused by the exciter means magnetic field.

公开(公告)号：US10921287B2

公开(公告)日：2021-02-16

申请号：US15747878

申请日：2016-07-27

申请人： Zetec, Inc.

发明人： Noa M. Rensing

IPC分类号： G01N27/90 ,  G01N27/904 ,  G01N27/9013

摘要： A drive coil assembly to generate a specific spatial distribution of eddy currents within the walls of a conductive tube or pipe, which may be used in conjunction with a separate array of magnetic sensors to detect defects in the tubing wall. The drive coil assembly comprises a plurality of coils which are generally wrapped around the circumference of a cylindrical probe body, but which are further shaped with serpentine undulation in the axial direction. The undulation is characterized by a spatial amplitude, a spatial phase and a spatial frequency; typically, the spatial frequency results in an integer number of undulations around the circumference of the drive coil and the phase is chosen to uniformly distribute the lobes about the circumference. The temporal phase of the electrical current in each coil is chosen to null out net current of the assembly around the circumference.

公开(公告)号：US11525805B2

公开(公告)日：2022-12-13

申请号：US16891338

申请日：2020-06-03

申请人： Olympus NDT Canada Inc.

发明人： Rémi Leclerc ,  Benoit Lepage ,  Charles Brillon

IPC分类号： G01N27/90 ,  G01N27/904 ,  G01P3/80

摘要： An eddy current (EC) detection system comprises an EC probe including a plurality of sensors to provide corresponding EC response signals; and processing circuitry to evaluate speed of the EC probe based on a measurement of similarity of the EC response signals; determine whether the speed of the EC probe is too fast or two slow based on quality of the measurement; and generate a command to adjust speed of the EC probe during further EC inspection.

公开(公告)号：US11499941B2

公开(公告)日：2022-11-15

申请号：US16710646

申请日：2019-12-11

申请人： Zetec, Inc.

发明人： Steve Timm ,  Evan Lloyd ,  Tom O'Dell ,  Bill Ziegenhagen ,  Evans Nguyen

IPC分类号： G01N27/9013 ,  G01N27/904 ,  G01N27/90

摘要： A flexible eddy current probe for non-destructive testing of a metallic object may include one or more plus-point coils and a flexible printed circuit having first and second parallel sides, third and fourth parallel sides, and a number of adjacent strips. The strips have first and second ends that are contiguous with the first and second parallel sides, respectively. Each of the strips may contain a pair of coils oriented along the length of the strip, a first coil being proximate to the first end and a second coil being proximate to the second end, and each of the coils is configured to excite an eddy current in the metal object or to sense an eddy current. Each of the strips may also be independently flexible from one another. The eddy current sensor array is configured to be scanned over the metal object.

公开(公告)号：US20220260529A1

公开(公告)日：2022-08-18

申请号：US17691560

申请日：2022-03-10

申请人： INFRASTRUCTURE PRESERVATION CORPORATION

发明人： William SEAVEY

IPC分类号： G01N27/904 ,  G01R33/02

摘要： A robotic inspection system for broadcast tower support cables includes a self-propelled sensing device configured to move along a broadcast tower support cable for taking main magnetic flux (MMF) readings as the sensing device moves along the support cable. The system also includes a control station configured to wirelessly interface with the sensing device and to generate a broadcast tower support cable condition assessment report from the MMF readings to identify locations and sizes of deterioration of the broadcast tower support cable. The sensing devices includes a sensing array that is insulated from the electromagnetic radiation emitted from the broadcast tower.

公开(公告)号：US11340193B2

公开(公告)日：2022-05-24

申请号：US16481243

申请日：2018-01-15

申请人： GLOBAL INSPECTIONS NDT, INC.

发明人： Thomas Shumka ,  Jason Shumka

IPC分类号： G01N27/904 ,  G01N27/90 ,  G01M13/02

摘要： A form-fitting eddy current array probe for inspecting helical gears is provided, the probe comprising: a leg which includes a sensor zone with a plurality of eddy current arrays; an arm attached to and normal with the leg to provide an L-shaped probe, the arm including a sensor zone with a plurality of eddy current arrays; a resilient layer underlying the sensor zones; a gel layer attached to an upper surface of the sensor zones, the gel layer including a fluid gel and an outer covering encasing the fluid gel; and an encoder distally located on the leg. A method of inspecting a girth gear set including a helical gear and a girth gear using the form-fitting eddy current array probe is also provided.

公开(公告)号：US11231392B2

公开(公告)日：2022-01-25

申请号：US15847599

申请日：2017-12-19

申请人： INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

发明人： Chung-Fan Tu ,  Hau-Wei Wang

IPC分类号： G01N27/90 ,  G01N27/904

摘要： A detecting device includes a first coil, a third coil, a second coil, and a fourth coil. The first coil generates a first magnetic field on a to-be-measured object. The third coil generates a third magnetic field under the to-be measured object. The second coil generates a second magnetic field. After the fourth coil receives the second magnetic field, a voltage is induced. The induced voltage is amplified by an amplify circuit to drive the third coil. The directions of the currents generated by the first coil and the third coil, respectively, are the same.

公开(公告)号：US20220341876A1

公开(公告)日：2022-10-27

申请号：US17660976

申请日：2022-04-27

申请人： JENTEK Sensors, Inc.

发明人： Todd Dunford ,  Neil Goldfine ,  Stuart Chaplan

IPC分类号： G01N27/904 ,  G01N27/90

摘要： A system and method are provided for inspecting challenging material locations such as holes. The system may include a sensor cartridge (“mandrel”) for hole inspection that has a helical portion to which a sensor array is attached. The radius of the helical portion can be increased or decreased by applying a torque to the helical portion thereby allowing the sensor to be inserted into a hole or pressed against the wall of the hole. A scanner is described to which mandrels can be quickly connected and changed enabling an inspector to quickly switch between different mandrels (e.g., for different holes sizes and sensor configurations). Also disclosed is an inspection procedure and data processing algorithm for performing an inspection. The data processing algorithm utilizes a signature library for enhancing the detection or sizing of features of interest such as cracks. The algorithm and library can account for material edges, various material types.

公开(公告)号：US20220221428A1

公开(公告)日：2022-07-14

申请号：US17609302

申请日：2020-01-23

申请人： OTR WHEEL SAFETY, INC.

发明人： Thomas SHUMKA ,  Jason SHUMKA

IPC分类号： G01N27/9013 ,  G01N27/904 ,  G01N27/90 ,  G01N21/88 ,  G01N23/223 ,  G01M17/013

摘要： A method and system for inspecting a steel wheel or steel rim of an off the road vehicle is provided. A method and system for predictive modeling of health and remaining useful life of a steel wheel or steel rim of the off the road vehicle is also provided. The off the road vehicles include vehicles at remote locations such as mine sites.

公开(公告)号：US11360051B2

公开(公告)日：2022-06-14

申请号：US16314071

申请日：2018-11-26

申请人： INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

发明人： Bong Young Yoo ,  Soo Bin Park ,  Han Seung Lee ,  Song Jun Lee ,  Dong Ik Lee

IPC分类号： G01N27/904 ,  G01N27/90 ,  G01N33/20

摘要： The present disclosure provides a construction structure corrosion measurement sensor having accuracy higher than that of conventional sensors, and a method for measuring corrosion by using the same. To this end, the present disclosure provides a sensor assembly including an eddy-current sensor including an insulator a coil surrounding the outer periphery of the insulator. The present disclosure also provides a construction structure corrosion measurement method including the steps of: positioning a sensor assembly next to a rebar inside a construction structure in parallel with and adjacent to the rebar; applying a voltage to the sensor assembly; measuring a voltage generated by an eddy current resulting from the adjacent rebar; and conducting measurement at a predetermined time interval so as to measure a voltage change.