公开(公告)号：EP2286212A1

公开(公告)日：2011-02-23

申请号：EP09745434.2

申请日：2009-04-02

申请人： V & M Deutschland GmbH

发明人： GROOS, Andreas ,  NITSCHE, Stefan

IPC分类号： G01N27/87

CPC分类号： G01N27/87

摘要： The invention relates to a method for the nondestructive testing of pipes made of ferromagnetic steel for flaws by means of leakage flux, wherein the pipe is magnetized by a constant field and the flaws present in the near-surface region of the outer or inner surface of the pipe cause magnetic leakage flux, which exits the pipe surface and is detected by probes of a test unit each for longitudinal and/or transversal flaw testing, wherein the association of the detected amplitude signals is performed on the basis of the amplitude height and/or the frequency spectrum with respect to an outer or inner flaw by external or internal flaw thresholds. To this end, prior to associating the detected amplitude signals with an external or internal flaw, the angular position of the flaw relative to the respective magnetic field direction is determined, and a correction of the signals is carried out by way of a previously determined corrective factor for amplitudes and/or frequencies.

公开(公告)号：EP1801574A3

公开(公告)日：2008-03-12

申请号：EP06026283.9

申请日：2006-12-19

申请人： Prüftechnik Dieter Busch AG

发明人： Zimmermann, Bernd

IPC分类号： G01N27/90 ,  G01N27/82

CPC分类号： G01N27/9013 ,  G01N27/82 ,  G01N27/87 ,  G01N27/904

摘要： Ein Rotierkopf zur Verwendung in einem Gerät zur zerstörungsfreien Prüfung von metallischem Prüfgut weist neben Sondenträgern, Streufluß- oder Wirbelstromsensensoren einen Koppelring (180) sowie elastische Koppelelemente auf. Auf diese Weise wird eine tandemartige, annähernd zwangsweise Verkopplung von Schwenkbewegungen der Sondenträger bewirkt.

公开(公告)号：EP1801574A2

公开(公告)日：2007-06-27

申请号：EP06026283.9

申请日：2006-12-19

申请人： Prüftechnik Dieter Busch AG

发明人： Zimmermann, Bernd

IPC分类号： G01N27/90

CPC分类号： G01N27/9013 ,  G01N27/82 ,  G01N27/87 ,  G01N27/904

摘要： Ein Rotierkopf zur Verwendung in einem Gerät zur zerstörungsfreien Prüfung von metallischem Prüfgut weist neben Sondenträgern, Streufluß- oder Wirbelstromsensensoren einen Koppelring (180) sowie elastische Koppelelemente auf. Auf diese Weise wird eine tandemartige, annähernd zwangsweise Verkopplung von Schwenkbewegungen der Sondenträger bewirkt.

摘要翻译： 用于扫描细长测试件表面的旋转头包括两个用于接触扫描测试片（62）的杂散磁通或涡流传感器（60,60'）的探针支架（152,152'），耦合环 ）和弹性元件，用于当传感器由于测试件中偏心的位置变化而偏转时串联耦合探头支架的枢转运动。

公开(公告)号：EP4390387A1

公开(公告)日：2024-06-26

申请号：EP22884151.6

申请日：2022-10-11

申请人： Kolesnikov, Igor Sergeevich

发明人： Kolesnikov, Igor Sergeevich

IPC分类号： G01N27/87

CPC分类号： G01N27/87

摘要： The in-line device for determining mechanical stresses in pipelines is designed to move within the pipeline. The device features a cylindrical body that houses at least two coaxially positioned non-ferromagnetic disks. These disks are rigidly connected and arranged at a distance L. The device also includes at least four probes with 3D gradiometer sensors capable of scanning the inner pipe surface using the magnetic gradient tomography (MTM-G) method. The probes are rigidly fixed and coaxially positioned within the cylindrical body on the aforementioned disks, enabling scanning in three mutually perpendicular planes within the pipe space.

公开(公告)号：EP3336535A1

公开(公告)日：2018-06-20

申请号：EP17206336.4

申请日：2017-12-11

申请人： Rolls-Royce plc

发明人： WONG, Chow Cher ,  HASSAN, Waled ,  FAN, David ,  CASTAGNE, Sylvie J ,  NAGARAJAN, Balasubramanian ,  ANNAMALAI, Swaminathan

IPC分类号： G01N27/90

CPC分类号： G01N27/87 ,  B24B49/10 ,  B24B49/105 ,  G01N27/02 ,  G01N27/025 ,  G01N27/90 ,  G01N27/9033 ,  G01N27/9046 ,  G01R1/067

摘要： An eddy current probe comprises a first planar coil (210), a second planar coil (230) and a flexible substrate. The first coil comprises a first conductor (214) having a spiral geometry, and the second coil comprises a second conductor (234) having a spiral geometry. The first conductor is arranged concentrically with the second conductor, with the first conductor being juxtaposed with the second conductor, and the concentrically arranged first and second conductors are embedded within the flexible substrate.

公开(公告)号：EP3006932B1

公开(公告)日：2018-05-09

申请号：EP14893694.1

申请日：2014-11-12

申请人： Public Joint Stock Company "Transneft" ,  Joint Stock Company "Transneft Diascan"

发明人： MIROSHNIK, Aleksandr Dmitrievich ,  CHERNYSHOV, Oleg Grigoryevich ,  CHERTORIZHSKY, Roman Yuryevich ,  MEDELEV, Pavel Anatolyevich

IPC分类号： G01N27/87

CPC分类号： F17D5/00 ,  G01N27/87

摘要： This utility model relates to the field of magnetic flaw detection, to devices for non-destructive testing of pipelines, and, in particular, to a magnetic system for an in-pipe flaw detector. The technical effect of the claimed utility model consists in decreasing mutual influence of main belts of magnetic modules and improving uniformity of magnetic field distribution in circumferential and longitudinal directions. The magnetic system for transverse magnetization having fixed magnetic modules and designed for an in-pipe flaw detector consists of two main and four additional belts of magnetic modules, which are arranged on two magnetic conductors connected with a non-magnetic insert. Each magnetic module consists of permanent magnets and wire brushes that transfer a magnetic flux into the pipeline wall. Magnetic modules that are adjacent to each other in a belt have opposite directions of a magnetic field in an interpolar space. The main poles of magnetic modules are angularly offset relative to each other. The additional belts of magnetic modules are arranged at the edges of the main belts of magnetic modules, two additional magnetic modules being arranged between the belts of main magnetic modules and serving for compensating mutual influence of a magnetic field generated by the main magnetic modules and for decreasing non-symmetry of the magnetic field, which is caused by close location of the main poles. Each additional belt of magnetic modules serving for correcting non-symmetry of the field is angularly offset relative to a main magnetic belt.

公开(公告)号：EP2269049B2

公开(公告)日：2017-05-10

申请号：EP09732339.8

申请日：2009-03-25

申请人： Institut Dr. Foerster GmbH & Co. KG

发明人： BRAUN, Heinrich

IPC分类号： G01N27/87

CPC分类号： G01N27/87

公开(公告)号：EP3161472A1

公开(公告)日：2017-05-03

申请号：EP15722134.2

申请日：2015-05-04

申请人： Institut Dr. Foerster GmbH & Co. KG

发明人： UHLIG, Robert P. ,  HECKER, Friedrich

IPC分类号： G01N27/87

CPC分类号： G01N27/87

摘要： The invention relates to a method for the stray flow testing of a ferromagnetic material to be tested, in particular ferromagnetic pipes, in order to detect defects. A testing volume of the material to be tested is magnetized by means of a magnetic DC field. A surface of the material to be tested is scanned by means of a probe arrangement in order to detect magnetic stray fields caused by defects, said probe arrangement having a probe array with a plurality of magnetic field-sensitive probes which are arranged adjacently in a first direction and which are held at a final testing distance to the surface of the testing material during the testing. Electric probe signals are analyzed in order to qualify the defects. A probe arrangement is used in which each of the probes has a probe width in the first direction, said probe width ranging from 20% of the testing distance up to 10 mm. An analysis of the probe signals includes a mapping operation (MAP) in which signal information representing the probe signal is linked to position information representing the origin of a probe signal for each probe signal in order to form position-dependent signal data, a matrix formation operation (MAT) in which the position-dependent signal data or signal data derived therefrom is stored in base matrix fields connected in a positionally correct manner, and at least one analysis operation in which position-dependent signal data consisting of at least two base matrix fields that are directly or indirectly adjacent in an analysis direction are linked using at least one analysis algorithm.

摘要翻译： 本发明涉及用于待测试的铁磁材料（特别是铁磁管）的杂散流测试以便检测缺陷的方法。 借助于磁场直流磁场对待测材料的测试体积进行磁化。 通过探针装置扫描待测试材料的表面以便检测由缺陷引起的杂散磁场，所述探针装置具有带有多个磁场敏感探针的探针阵列，所述多个磁场敏感探针相邻地布置在第一 方向并且在测试期间保持在与测试材料表面的最终测试距离处。 电探针信号进行分析，以确定缺陷。 使用探针布置，其中每个探针在第一方向上具有探针宽度，所述探针宽度范围从测试距离的20％直到10mm。 探测信号的分析包括映射操作（MAP），其中表示探测信号的信号信息被链接到表示探测信号的起源的位置信息以形成位置相关信号数据，矩阵形成 （位置相关信号数据或从其中导出的信号数据存储在以位置正确的方式连接的基本矩阵字段中的操作（MAT））和至少一个分析操作，在该分析操作中，位置相关信号数据由至少两个基本矩阵 使用至少一种分析算法来链接在分析方向上直接或间接相邻的字段。

公开(公告)号：EP2737242A4

公开(公告)日：2016-01-27

申请号：EP11870499

申请日：2011-07-29

申请人： PETROLIAM NASIONAL BERHAD PETRONAS

发明人： GOROSHEVSKY VALERIAN PAVLOVICH ,  KAMAEVA SVETLANA SERGEEVNA ,  KOLESNIKOV IGOR SERGEEVICH

IPC分类号： F17D5/06 ,  G01N27/85 ,  G01N27/87

CPC分类号： F17D5/06 ,  G01N27/87

摘要： The present invention is directed to a system and a method for inspecting a subsea pipeline. The method comprises the steps: detecting a defect along the subsea pipeline using a subsea magnetometric tomography method (MTM) module adjacent the subsea pipeline; and determining a position of the subsea MTM module, thereby determining the position of the defect. The method further comprises determining the position of the subsea MTM module relative to a surface vessel; and determining an absolute position of the surface vessel.

摘要翻译： 本发明涉及一种用于检查海底管道的系统和方法。 该方法包括以下步骤：使用邻近海底管线的海底磁力层析成像方法（MTM）模块检测沿海底管线的缺陷; 并确定海底MTM模块的位置，从而确定缺陷的位置。 该方法还包括确定海底MTM模块相对于地面船舶的位置; 并确定表面血管的绝对位置。

公开(公告)号：EP2846157A1

公开(公告)日：2015-03-11

申请号：EP14183784.9

申请日：2014-09-05

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Szielasko, Dr.-Ing. Klaus ,  Sheikh Amir, Meisam ,  Herrmann, Prof. Dr.-Ing. Hans-Georg ,  Tschuncky, Dr.-Ing. Ralf

IPC分类号： G01N27/87

CPC分类号： G01N27/87

摘要： Die Erfindung betrifft eine Sensoranordnung zur zerstörungsfreien Charakterisierung von Proben oder Bauteilen aus nichtferromagnetischen Werkstoffen, bei der mindestens eine Erregerspule um einen Kern aus einem ferromagnetischen Werkstoff gewickelt ist, wobei die mindestens eine Erregerspule an eine elektrische Wechselspannungsquelle angeschlossen ist. Am Kern ist ein mit seinem Querschnitt verjüngter Bereich vorhanden. Der im Querschnitt verjüngte Bereich ist von einer Empfängerspule umwickelt. Die Empfängerspule ist an eine elektronische Auswerteeinheit angeschlossen; wobei der im Querschnitt verjüngte Bereich mit der Empfängerspule an die zu prüfende Oberfläche einer Probe oder eines Bauteils nah heranführbar ist, diese dabei jedoch nicht berührt.

摘要翻译： 本发明涉及一种用于由非铁磁材料的样品或组分的非破坏性的表征，其中，至少一个激发线圈围绕由铁磁材料制成的铁芯上，其中所述连接的至少一个励磁线圈的电AC电压源的传感器装置。 在一个锥形的核心，其横截面面积是可用的。 锥形横截面面积是由接收器线圈缠绕。 接收器线圈被连接到一个电子评估单元; 其中，所述接收器线圈到样品或组分的测试表面的锥形截面积接近变焦可行这种情况下，然而，不会受到影响。