WO2015190414A1 - Dispositif d'inspection non destructive - Google Patents

Dispositif d'inspection non destructive Download PDF

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Publication number
WO2015190414A1
WO2015190414A1 PCT/JP2015/066363 JP2015066363W WO2015190414A1 WO 2015190414 A1 WO2015190414 A1 WO 2015190414A1 JP 2015066363 W JP2015066363 W JP 2015066363W WO 2015190414 A1 WO2015190414 A1 WO 2015190414A1
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WO
WIPO (PCT)
Prior art keywords
nondestructive inspection
yoke
magnetic field
inspection apparatus
inspected
Prior art date
Application number
PCT/JP2015/066363
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English (en)
Japanese (ja)
Inventor
柴谷　一弘
Original Assignee
コニカミノルタ株式会社
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Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Priority to JP2016527783A priority Critical patent/JPWO2015190414A1/ja
Publication of WO2015190414A1 publication Critical patent/WO2015190414A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents

Definitions

  • the present invention relates to a nondestructive inspection apparatus using a magnetic field response to a pulsed magnetic field.
  • non-destructive inspection based on the detection principle based on the magnetic response generated by applying an external magnetic field to the object to be inspected has the excellent feature that non-contact inspection is possible. It is expected as a method.
  • Patent Document 1 discloses a method of inspecting a pipe for defects by inserting a pipe through an exciting coil, applying a pulsed magnetic field to an object to be inspected, and measuring the magnetic field response.
  • a pulsed magnetic field By using a pulsed magnetic field, the signal frequency is widened, making it possible to detect defects deeper than conventional high-frequency eddy current flaw detection methods, thereby capturing the presence or absence of defects under insulation. It is possible.
  • the exciting coil can be separated by a coil connection connector.
  • the rigidity of the exciting coil increases and it becomes difficult to attach to the piping to be inspected.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide a nondestructive inspection apparatus that can be easily installed regardless of the shape of an object to be inspected in a nondestructive inspection using a pulsed magnetic field.
  • An apparatus is a nondestructive inspection apparatus using a magnetic field response to a pulsed magnetic field, and includes a U-shaped yoke and an exciting coil wound around the yoke.
  • FIG. 1 to 4 are schematic views showing a nondestructive inspection apparatus according to an embodiment of the present invention
  • FIG. 5 is a diagram for explaining the state of inspection using the nondestructive inspection apparatus of FIG. 1,
  • FIG. It is a block diagram which shows the main structures of the nondestructive inspection apparatus of embodiment.
  • a heat insulating pipe 50 is used as an example of an object to be inspected.
  • the heat insulating pipe 50 is a main body of the pipe, which is a steel pipe 51 made of carbon steel or the like, a heat insulating material 52 made of calcium silicate covering the outer surface of the steel pipe 51, a galvanized steel plate or carbon steel covering the outer surface of the heat insulating material 52, etc. It is comprised with the surface sheet metal 53 which consists of.
  • the heat insulating material 52 is packed between the steel pipe 51 and the surface sheet metal 53 without a gap.
  • the steel pipe 51 may be made of carbon steel (relative magnetic permeability is 150, electrical resistivity is 15 ⁇ 10 ⁇ 8 ⁇ m), the inner diameter is 150 mm, and the wall thickness is 7.1 mm.
  • the heat insulating material 52 calcium silicate (non-conductor having a relative permeability of 1) can be used.
  • the surface sheet metal 53 can be made of the same material as the steel pipe 51 and has an inner diameter of 265 mm and a wall thickness of 0.3 mm.
  • test object not only such a steel pipe 51 but also a pipe including a material (for example, a conductor) whose relative permeability is not 1 can be used.
  • the test object may be a pipe made of only a steel pipe, and is not limited to a pipe, and various shapes such as a test object having a large area close to a plane such as a steel plate can be used. .
  • the nondestructive inspection apparatus 10 includes a pulse current source 11, a pulse magnetic field generation unit 12, a magnetic detection unit 13, a moving unit 14, and a control unit 15.
  • the pulse current source 11 supplies a predetermined pulse current to the pulse magnetic field generation unit 12 according to an instruction from the control unit 15.
  • the pulse magnetic field generator 12 is connected to the pulse current source 11 and generates a pulse magnetic field to be applied to the object to be inspected (the heat insulating pipe 50) by the current from the pulse current source 11.
  • the pulse magnetic field generator 12 is a unit including a yoke 12a and exciting coils 12b and 12c.
  • the yoke 12a is composed of a long side portion extending substantially linearly and two short side portions each extending in the same direction so as to be substantially perpendicular to the long side portion from both ends of the long side portion. It has a letter shape.
  • the two short sides are both ends (including the vicinity of both ends) of the yoke 12a.
  • the U-shape refers to all shapes in which a part of the ring is open, and may be a curved shape without corners or a polygonal shape with corners.
  • the tip surfaces 12d and 12e at both ends of the yoke 12a are substantially parallel, and more preferably on the same plane.
  • the yoke 12a is preferably made of a material having high magnetic permeability such as a silicon steel plate or ferrite.
  • the yoke 12a can be inspected in addition to being installed so that the longitudinal direction of the yoke 12a and the axial direction of the heat insulating pipe 50 are parallel as shown in FIG. Inspection is possible no matter which direction 12a is installed.
  • the exciting coils 12b and 12c are wound around both ends (short sides) of the yoke 12a.
  • the exciting coils 12b and 12c are connected to the pulse current source 11 so that currents flow in opposite directions, and an arbitrary pulse current is supplied to form a magnetic field as shown by an arrow in FIG. That is, the magnetic flux generated in one exciting coil 12b enters the heat insulating pipe 50 from the radial direction, proceeds in the heat insulating pipe 50 along the axial direction (longitudinal direction), and the other excitation is performed from the radial direction of the heat insulating pipe 50. It goes to the coil 12b.
  • one end of the yoke 12a is an N pole and the other end is an S pole, and a magnetic flux is given in a direction perpendicular to the surface of the heat insulating pipe 50, and a magnetic flux from the N pole toward the S pole is axially passed through the heat insulating pipe 50. It flows in (longitudinal direction).
  • the magnetic detection unit 13 includes a magnetic sensor 13a and a detection circuit 13b, detects a magnetic field response to a pulsed magnetic field, and generates a magnetic field response signal. Magnetic flux density can be used as the intensity of the magnetic field response.
  • the magnetic sensor 13a is provided in the vicinity of the center of the long side portion of the yoke 12a and in the U-shaped inner portion in the same direction as the extending direction of the short side portion.
  • the magnetic sensor 13a is preferably provided at a position that protrudes from the yoke 12a and has the same length as the short side or a slightly shorter length.
  • the magnetic sensor 13a measures the magnitude and direction of a magnetic field (magnetic field), and various sensors that can detect a magnetic field response to a pulsed magnetic field can be used in this embodiment.
  • a coil MR (Magneto Resistance) element, Hall element, magneto-impedance element, SQUID (Superconducting Quantum Interference Device), etc.
  • the MR element an AMR (Anisotropic Magneto Resistance) element, a TMR (Tunnel Magneto Resistance) element, or the like can be used.
  • the magnetic sensor 13a may be provided at a position other than the yoke 12a or a position other than the yoke 12a as long as the response magnetic field can be detected.
  • the detection circuit 13b is connected to the magnetic sensor 13a, and receives the input from the magnetic sensor 13a to generate a magnetic field response signal.
  • the detection circuit 12 b is connected to the control unit 15 and outputs the generated magnetic field response signal to the control unit 15.
  • the moving unit 14 has a self-propelled mechanism for moving the yoke 12a and the magnetic sensor 13a along the object to be inspected. For example, by driving a wheel provided in the nondestructive inspection apparatus 10 with a motor, nondestructive inspection is performed.
  • the device 10 can freely move on the heat insulating pipe 50.
  • the control unit 15 obtains a magnetic field response signal at high speed while moving the yoke 12a and the magnetic sensor 13a by controlling the pulsed magnetic field to be applied while driving the moving unit 14 (for example, every 20 to 30 mm). Can be efficiently inspected over a wide area.
  • the moving unit 14 may be configured to move manually without a power source such as a motor.
  • the control unit 15 controls the pulse current source 11, the magnetic detection unit 13, and the moving unit 14, that is, controls the entire nondestructive inspection apparatus 10.
  • the control unit 15 determines a flaw in the steel pipe 51 based on the magnetic field response signal acquired from the detection circuit 13b. For example, the attenuation waveform of the magnetic field response signal is normalized, the attenuation time of the normalized waveform is calculated, and the flaw of the steel pipe 51 can be analyzed. Scratches are based on the thickness of the steel pipe 51, and the decay time becomes shorter as the thickness becomes thinner due to corrosion or the like.
  • FIGS. 2 to 4 another embodiment of the nondestructive inspection apparatus, particularly the pulse magnetic field generator 12 will be described. 2 to 4, members similar to those shown in FIG. 1 are given the same reference numerals, and detailed descriptions thereof are omitted.
  • the nondestructive inspection apparatus 20 shown in FIG. 2 differs from the nondestructive inspection apparatus 10 shown in FIGS. 1 and 6 in that the exciting coil 12f is wound around the long side portion of the yoke 12a. It is the same as the device 10. Thus, even when the exciting coil 12f is wound around the long side portion of the yoke 12a, a magnetic flux similar to the arrow shown in FIG. 5 can be generated, so that the inspection can be performed by the same method as described above.
  • the nondestructive inspection apparatus 30 shown in FIG. 3 has a configuration in which the nondestructive inspection apparatus 10 of FIG. 1 and the nondestructive inspection apparatus 20 of FIG. 2 are combined, that is, excitation coils in the vicinity of both ends (short sides) of the yoke 12a. 12b and 12c are wound, and the exciting coil 12f is wound around the long side portion of the yoke 12a. Even with such a configuration, a magnetic flux similar to the arrow shown in FIG. 5 can be generated, so that the inspection can be performed in the same manner as described above. According to the non-destructive inspection apparatus 30, the number of excitation coils can be increased and the magnetic flux density is increased. Therefore, the SN ratio at the time of detecting a magnetic field response signal is improved, and more accurate detection is possible.
  • the nondestructive inspection apparatus 40 shown in FIG. 4 is different from the nondestructive inspection apparatus 10 shown in FIGS. 1 and 6 in that the tip shape of both ends of the yoke 41a is a convex curved surface. This is the same as the inspection apparatus 10.
  • the tip surfaces 41d and 41e at both ends of the yoke 41a can be, for example, spherical surfaces or spheroidal surfaces.
  • the tip surfaces 41d and 41e are inspected by making contact with the object to be inspected at points, so that even when the surface of the object to be inspected has irregularities, the tip surfaces 41d and 41e are surely attached to the object to be inspected.
  • the air gap between the object to be inspected and the yoke 41a can be eliminated. As a result, the SN ratio at the time of detecting the magnetic field response signal is improved, and more accurate detection is possible.
  • the non-destructive inspection apparatuses 10, 20, 30, and 40 shown in FIGS. 1 to 4 are different in the tip shape of the both ends of the yoke and the winding method of the excitation coil, but all use a magnetic field response to a pulsed magnetic field.
  • This is a non-destructive inspection device, and includes a U-shaped yoke and an exciting coil wound around the yoke.
  • these devices have yokes formed in a U shape so that the tips of both ends can be in contact with the object to be inspected, and both ends of the yoke are wound around the yoke and energized.
  • An excitation coil that forms a magnetic field through the tips of both ends of the yoke with respect to the object to be inspected that is in contact with the tip of the test piece, and can be used for nondestructive inspection using a magnetic field response to a pulsed magnetic field Inspection equipment.
  • nondestructive inspection apparatuses 10, 20, 30, and 40 it is possible to provide a nondestructive inspection apparatus that can be easily installed regardless of the shape of the object to be inspected in the nondestructive inspection using the pulse magnetic field. .
  • FIG. 7 is a schematic view showing a nondestructive inspection apparatus according to an embodiment of the present invention
  • FIGS. 8A and 8B are diagrams for explaining a connecting portion
  • FIGS. 9 to 11 are diagrams of inspection using the nondestructive inspection apparatus of FIG.
  • FIG. 12A is a diagram illustrating an example
  • FIG. 12A is a diagram illustrating an example of a non-destructive inspection apparatus connected in series
  • FIG. 12B is a diagram illustrating an example of a non-destructive inspection apparatus connected in parallel.
  • the nondestructive inspection apparatus 60 is provided with two sets of connecting portions 61 and 62 in the nondestructive inspection apparatus 10 shown in FIG.
  • the connecting portion 61 includes a pair of plugs 61a and 61b and a flexible wiring 61c provided on the back side of the yoke 12a, and a pair of jacks 61e and 61f provided on the front side of the yoke 12a so as to face the flexible wiring 61c. And a connector 61d.
  • connection portion 62 is provided on the back side of the yoke 12a with a pair of plugs 62a, 62b and a flexible wiring 62c, and on the front side of the yoke 12a with the flexible wiring 62c, and a pair of jacks 62e, And a connector 62d having 62f.
  • the connection parts 61 and 62 can connect the nondestructive inspection apparatuses 60 so that attachment or detachment is possible.
  • the plugs 61a, 61b, 62a, and 62b are terminals that are electrically connected by being inserted into jacks 61e, 61f, 62e, and 62f of other nondestructive inspection devices 60, respectively.
  • the flexible wirings 61c and 62c are flexible wirings formed by covering the wirings with a resin, for example, and can be bent or bent in FIG.
  • Two wires pass through each of the flexible wires 61c and 62c.
  • One wiring in the flexible wiring 61c is connected to the plug 61a at one end of the flexible wiring 61c opposite to the yoke 12a, and the other end connected to the yoke 12a of the flexible wiring 61c is connected to the exciting coil 12b. Connected to one end. The other end of the exciting coil 12b is connected to one jack 61e of the connector 61d.
  • the other wiring in the flexible wiring 61c is connected to the plug 61b at one end opposite to the yoke 12a of the flexible wiring 61c, and the other end of the connector 61d is connected to the yoke 12a of the flexible wiring 61c.
  • one wiring in the flexible wiring 62c is connected to the plug 62a at one end of the flexible wiring 62c opposite to the yoke 12a, and excited at the other end connected to the yoke 12a of the flexible wiring 62c. It is connected to one end of the coil 12c.
  • the other end of the exciting coil 12c is connected to one jack 62e of the connector 62d.
  • the other wiring in the flexible wiring 62c is connected to the plug 62b at one end of the flexible wiring 62c opposite to the yoke 12a, and the other end of the flexible wiring 62c connected to the yoke 12a is the other end of the connector 62d.
  • the plug 62a is electrically connected to the jack 62e via the exciting coil 12c
  • the plug 62b is electrically connected directly to the jack 62f.
  • FIG. 8A is a plan view of the vicinity of the plug 61a and the jack 61e between adjacent nondestructive inspection apparatuses
  • FIG. 8B is a plan view of the state in which the plug 61a and the jack 61e of FIG. 8A are connected. Since the other plugs 61b, 62a, 62b and the jacks 61f, 62e, 62f have the same configuration, detailed description thereof is omitted.
  • the tip 61g of the plug 61a has a substantially conical shape larger than the columnar axis of the plug 61a.
  • the jack 61e has a cylindrical shape having a diameter larger than that of the plug 61a so that the plug 61a and the tip 61g thereof can be inserted.
  • a part of the inner wall of the jack 61e is cut away to form a recess (not shown), and a ball 61h is installed in the recess.
  • the recess forms an opening in the inner wall of the jack 61e, but the ball 61h has a diameter that is slightly larger than the opening, and therefore does not fall into the jack 61e.
  • the ball 61h is urged toward the inner peripheral side by a spring or the like (not shown) from the outer peripheral side of the inner wall of the jack 61e. With such a configuration, a part of the ball 61h protrudes from the opening into the jack 61e and can be retracted into the recess when pressed.
  • a plurality of such nondestructive inspection devices 60 can be connected and used.
  • 9 and 10 show the state of inspection using a nondestructive inspection apparatus 70 configured by connecting a plurality of nondestructive inspection apparatuses 60.
  • the nondestructive inspection device 70 connects the plugs and jacks of adjacent nondestructive inspection devices 60 in a plurality of nondestructive inspection devices 60, and as shown in FIG. 11, FIG. 12A or FIG. 60 connectors 61d and 62d are connected to the pulse current source 11, and plugs 61a, 61b, 62a and 62b of the non-destructive inspection device 60 at the other end are appropriately connected.
  • the magnetic sensor 13a may be provided in any one of the yokes 12a, may be provided in all the yokes 12a, or may be provided in every other yoke 12a. It may be provided on the alternate yoke 12a.
  • the number of the magnetic sensors 13a can be determined as appropriate depending on the sensitivity of the magnetic sensor 13a and the depth of the flaw of the object to be inspected.
  • the nondestructive inspection device 70 has a crawler shape (so-called caterpillar shape) or a bowl shape, and has a rectangular cross-section pipe 55 (see FIG. 9) or a circular cross-section pipe 56 depending on the flexibility of the flexible wirings 61c and 62c. It can be inspected by wrapping around an inspected object having various cross-sectional shapes such as (see FIG. 10). Further, by appropriately adjusting the number of connections of the non-destructive inspection device 60, it is possible to wind in a state in which the non-destructive inspection device 60 is in close contact with the inspection object having various diameters. Moreover, when a to-be-inspected object is plate shape, it can spread and install without winding.
  • both end portions of the yoke 12a can be reliably brought into contact with the surface of the object to be inspected regardless of the shape and size of the object to be inspected, and high accuracy cannot be detected. be able to.
  • FIG. 12A is an example of a nondestructive inspection apparatus 70 configured by directly connecting a nondestructive inspection apparatus 60.
  • a jack 61 e is connected to one end of the pulse current source 11, and a jack 62 e is connected to the other end of the pulse current source 11.
  • the plug 61a and the plug 62a are connected in the nondestructive inspection apparatus 60 of the other end of the nondestructive inspection apparatus 70.
  • FIG. 12B is an example of a nondestructive inspection apparatus 70 configured by connecting the exciting coils 12b and 12c of the nondestructive inspection apparatus 60 in parallel.
  • the jack 61e and the jack 62f are connected to one end of the pulse current source 11, respectively, and the jack 61f and the jack 62e are connected to the other end of the pulse current source 11, respectively.
  • the plug 61a and the plug 661b are connected, and the plug 62a and the plug 62b are connected.
  • the nondestructive inspection device 70 forms a parallel connection circuit.
  • non-destructive inspection apparatus 70 can detect the same method as described above in any of the series connection circuit and the parallel connection circuit, what type of connection circuit is used depends on the capacitance of the pulse current source 11, the exciting coil 12b, It can be appropriately determined according to the heat generation of 12c, use conditions, and the like.
  • the apparatus described above is a nondestructive inspection apparatus using a magnetic field response to a pulsed magnetic field, and includes a U-shaped yoke and an exciting coil wound around the yoke.
  • the above-described apparatus has a yoke that is formed in a U shape so that the tips of both ends thereof can contact the object to be inspected, and both ends of the yoke are wound around the yoke and energized.
  • An excitation coil that forms a magnetic field through the tips of both ends of the yoke with respect to the object to be inspected that is in contact with the tip of the test piece, and can be used for nondestructive inspection using a magnetic field response to a pulsed magnetic field Inspection equipment.
  • the exciting coil may be wound around both ends of the yoke.
  • the tip shape of both end portions of the yoke may be a convex curved surface.
  • a magnetic sensor for detecting a magnetic field response may be provided in the yoke.
  • nondestructive inspection apparatus may be provided with a connection portion that is flexible and electrically connected so that the nondestructive inspection apparatuses can be attached and detached.
  • a plurality of the nondestructive inspection apparatuses may be connected, and at least one yoke may be provided with a magnetic sensor that detects a magnetic field response.
  • the nondestructive inspection apparatus described above by using a U-shaped yoke around which an exciting coil is wound, it can be easily installed in a nondestructive inspection using a pulsed magnetic field regardless of the shape of the object to be inspected. .
  • Nondestructive inspection apparatus 12a 41a Yoke 12b, 12c Excitation coil 13a Magnetic sensor 41d, 41e Tip surface (convex curved surface) 61, 62 connection

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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Abstract

L'objectif de l'invention est de fournir un dispositif d'inspection non destructive qui peut être facilement installé indépendamment de la forme d'un objet à inspecter, dans le cadre d'une inspection non destructive par un champ magnétique pulsé. À cet effet, l'invention propose un dispositif d'inspection non destructive (10) qui utilise une réponse de champ magnétique à un champ magnétique pulsé, et qui comprend un bloc en forme de U (12a) et des bobines d'excitation (12b, 12c) qui sont enroulées autour du bloc (12a).
PCT/JP2015/066363 2014-06-12 2015-06-05 Dispositif d'inspection non destructive WO2015190414A1 (fr)

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Application Number Priority Date Filing Date Title
JP2016527783A JPWO2015190414A1 (ja) 2014-06-12 2015-06-05 非破壊検査装置

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JP2014-121524 2014-06-12
JP2014121524 2014-06-12

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WO2015190414A1 true WO2015190414A1 (fr) 2015-12-17

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019020320A (ja) * 2017-07-20 2019-02-07 株式会社テイエルブイ プローブ
CN111272864A (zh) * 2020-02-28 2020-06-12 湖北工业大学 一种基于径向磁场的脉冲涡流检测系统及方法
CN117554467A (zh) * 2023-11-13 2024-02-13 张赞国 一种敞开式钢丝绳检测装置及方法
JP7454165B2 (ja) 2022-07-29 2024-03-22 インフイテックエム株式会社 磁性体材料計測プローブおよび磁性体材料計測装置

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JPS58223743A (ja) * 1982-06-23 1983-12-26 Hitachi Ltd 直交型プロ−ブコイル
US4543528A (en) * 1982-09-30 1985-09-24 Republic Steel Corporation Flexible probe assembly for use in nondestructive testing of a convex workpiece surface
JPH07332918A (ja) * 1994-06-10 1995-12-22 Sanmei Denki Kk 隙間検出方法および隙間センサ
JP2000266728A (ja) * 1999-03-16 2000-09-29 Mitsubishi Electric Corp 管外部検査ロボットの傷検出システム
JP2005164593A (ja) * 2003-12-03 2005-06-23 General Electric Co <Ge> パルス渦電流センサプローブ及び検査方法
JP2006177952A (ja) * 2004-12-21 2006-07-06 General Electric Co <Ge> 渦電流プローブ、検査システム及び検査方法
JP2008286798A (ja) * 2007-05-21 2008-11-27 Olympus Ndt 様々な断面形状を有する輪郭面の検査用の可撓性のアレイプローブ
JP2012078349A (ja) * 2010-09-10 2012-04-19 Nippon Densokuki Kk パルス励磁検査装置及びパルス励磁検査方法
JP2012173281A (ja) * 2011-02-18 2012-09-10 Dainichi Kikai Kogyo Kk 交番磁場を利用した非破壊検査装置および非破壊検査方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223743A (ja) * 1982-06-23 1983-12-26 Hitachi Ltd 直交型プロ−ブコイル
US4543528A (en) * 1982-09-30 1985-09-24 Republic Steel Corporation Flexible probe assembly for use in nondestructive testing of a convex workpiece surface
JPH07332918A (ja) * 1994-06-10 1995-12-22 Sanmei Denki Kk 隙間検出方法および隙間センサ
JP2000266728A (ja) * 1999-03-16 2000-09-29 Mitsubishi Electric Corp 管外部検査ロボットの傷検出システム
JP2005164593A (ja) * 2003-12-03 2005-06-23 General Electric Co <Ge> パルス渦電流センサプローブ及び検査方法
JP2006177952A (ja) * 2004-12-21 2006-07-06 General Electric Co <Ge> 渦電流プローブ、検査システム及び検査方法
JP2008286798A (ja) * 2007-05-21 2008-11-27 Olympus Ndt 様々な断面形状を有する輪郭面の検査用の可撓性のアレイプローブ
JP2012078349A (ja) * 2010-09-10 2012-04-19 Nippon Densokuki Kk パルス励磁検査装置及びパルス励磁検査方法
JP2012173281A (ja) * 2011-02-18 2012-09-10 Dainichi Kikai Kogyo Kk 交番磁場を利用した非破壊検査装置および非破壊検査方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019020320A (ja) * 2017-07-20 2019-02-07 株式会社テイエルブイ プローブ
CN111272864A (zh) * 2020-02-28 2020-06-12 湖北工业大学 一种基于径向磁场的脉冲涡流检测系统及方法
JP7454165B2 (ja) 2022-07-29 2024-03-22 インフイテックエム株式会社 磁性体材料計測プローブおよび磁性体材料計測装置
CN117554467A (zh) * 2023-11-13 2024-02-13 张赞国 一种敞开式钢丝绳检测装置及方法

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