公开(公告)号：US07235967B2

公开(公告)日：2007-06-26

申请号：US11326510

申请日：2006-01-06

申请人： Akira Nishimizu ,  Tetsuya Matsui ,  Masahiro Koike ,  Yoshio Nonaka ,  Isao Yoshida

发明人： Akira Nishimizu ,  Tetsuya Matsui ,  Masahiro Koike ,  Yoshio Nonaka ,  Isao Yoshida

IPC分类号： G01R33/12

CPC分类号： G01N27/9013 ,  G01N27/904

摘要： An eddy current testing probe has a flexible substrate adapted to face to a surface of a test article, a plurality of coils which are fixed to the flexible substrate and energized one of which is capable of being changed sequentially, a pressing member for pressing the substrate toward the test article, an elastic member arranged between the substrate and the pressing member, and a movement limiting member for limiting a movement of the pressing member toward the test article.

摘要翻译： 涡流测试探针具有适于面向测试物品的表面的柔性基底，多个线圈，其固定到柔性基底并被激励，其中一个可以顺序地改变;用于按压基底的按压部件 朝向测试物品，布置在基底和按压构件之间的弹性构件和用于限制按压构件朝向测试物品移动的移动限制构件。

公开(公告)号：US20060170420A1

公开(公告)日：2006-08-03

申请号：US11326510

申请日：2006-01-06

申请人： Akira Nishimizu ,  Tetsuya Matsui ,  Masahiro Koike ,  Yoshio Nonaka ,  Isao Yoshida

发明人： Akira Nishimizu ,  Tetsuya Matsui ,  Masahiro Koike ,  Yoshio Nonaka ,  Isao Yoshida

IPC分类号： G01R33/12

CPC分类号： G01N27/9013 ,  G01N27/904

摘要： An eddy current testing probe has a flexible substrate adapted to face to a surface of a test article, a plurality of coils which are fixed to the flexible substrate and energized one of which is capable of being changed sequentially, a pressing member for pressing the substrate toward the test article, an elastic member arranged between the substrate and the pressing member, and a movement limiting member for limiting a movement of the pressing member toward the test article.

摘要翻译： 涡流测试探针具有适于面向测试物品的表面的柔性基底，多个线圈，其固定到柔性基底并被激励，其中一个可以顺序地改变;用于按压基底的按压部件 朝向测试物品，布置在基底和按压构件之间的弹性构件和用于限制按压构件朝向测试物品移动的移动限制构件。

公开(公告)号：US07911206B2

公开(公告)日：2011-03-22

申请号：US11771436

申请日：2007-06-29

申请人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G01N27/82 ,  G01N27/72

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US08339130B2

公开(公告)日：2012-12-25

申请号：US13028500

申请日：2011-02-16

申请人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G01R33/02 ,  G01N27/82

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US07358721B2

公开(公告)日：2008-04-15

申请号：US11680857

申请日：2007-03-01

申请人： Soshi Narishige ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuuichi Narumi ,  Hirofumi Ouchi

发明人： Soshi Narishige ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuuichi Narumi ,  Hirofumi Ouchi

IPC分类号： G01N27/82 ,  G01N27/90

CPC分类号： G01N27/902

摘要： An eddy current flaw detection sensor is provided which can detect a circumferential crack occurring at the deformed portion or peripheral portion thereof of a heat transfer tube with a high degree of sensitivity. Two excitation coils 1a, 1b cause eddy current B to flow in the axial direction of a tubular test object 31. A detection coil 2 disposed between the excitation coils 1a, 1b detects bypass eddy current D which flows in the circumferential direction of the test object 31 while bypassing a circumferential crack E. For this purpose, the coil axes of the excitation coils 1a, 1b are directed to the radial direction of the cylindrical protection member 3 and the coil axis of the detection coil 2 is directed to the axial direction of the protection member 3.

摘要翻译： 提供一种涡流探伤传感器，其能够以高灵敏度检测在传热管的变形部分或其周边部分处发生的周向裂纹。 两个励磁线圈1a，1b使涡流B沿管状被检体31的轴向流动。配置在励磁线圈1a，1b之间的检测线圈2检测在周向上流动的旁路涡流D 同时绕过周向裂纹E.为此，励磁线圈1a，1b的线圈轴线指向圆柱形保护构件3的径向，并且检测线圈2的线圈轴线是 指向保护构件3的轴向。

公开(公告)号：US08228058B2

公开(公告)日：2012-07-24

申请号：US12128316

申请日：2008-05-28

申请人： Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka ,  Yosuke Takatori ,  Akihiro Taki ,  Makoto Senoo

发明人： Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka ,  Yosuke Takatori ,  Akihiro Taki ,  Makoto Senoo

IPC分类号： G01R33/02 ,  G01N27/82

CPC分类号： G01N27/9033

摘要： Disclosed is an eddy current flaw detection probe that is capable of pressing itself against an inspection target whose curvature varies. A flaw sensor is configured by fastening a plurality of coils to a flexible substrate that faces the surface of the inspection target. A first elastic body is positioned opposite the inspection target for the flaw sensor, is obtained by stacking two or more elastic plates, and has an elastic coefficient that varies in a longitudinal direction. A second elastic body is a porous body positioned between the flexible substrate and the first elastic body. A pressure section is employed to press the first elastic body toward the inspection target.

摘要翻译： 本发明公开了一种涡流探伤探针，其能够将其自身压向弯曲变化的检查目标。 缺陷传感器通过将多个线圈紧固到面向检查对象表面的柔性基板来构造。 第一弹性体与用于缺陷传感器的检查对象物相对设置，通过堆叠两个或更多个弹性板获得，并且具有在纵向方向上变化的弹性系数。 第二弹性体是位于柔性基板和第一弹性体之间的多孔体。 使用压力部将第一弹性体朝向检查对象物按压。

公开(公告)号：US08183862B2

公开(公告)日：2012-05-22

申请号：US12389499

申请日：2009-02-20

申请人： Hisashi Endo ,  Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka

发明人： Hisashi Endo ,  Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka

IPC分类号： G01N27/82

CPC分类号： G01N27/9046

摘要： An eddy current testing device which confirms that a change in characteristics of a target object is detected regardless of the magnitude of the change and specifying the position of a portion from which the change is detected. The device uses an eddy current probe to inspect a bent portion of a metal body, and has an inspection controller and a display unit. The inspection controller calculates a phase angle of a signal detected by the eddy current probe and generates flaw identification image data that indicates an area (or an area of the signal detected and determined to correspond to a flaw signal, based on the phase angle of the detected signal) of a flaw signal in coordinates in which the position of the portion of the target object is plotted along a coordinate axis. The display unit displays the flaw identification image data.

摘要翻译： 一种涡流测试装置，其确认目标对象的特性的变化，而不管变化的大小如何，并且指定检测到变化的部分的位置。 该装置使用涡流探针来检查金属体的弯曲部分，并具有检查控制器和显示单元。 检查控制器计算由涡电流探测器检测的信号的相位角，并产生缺陷识别图像数据，该缺陷识别图像数据指示检测并确定为与缺陷信号相对应的信号的面积，基于相位角 检测信号），其中沿着坐标轴绘制目标对象的部分的位置的坐标中的缺陷信号。 显示单元显示缺陷识别图像数据。

公开(公告)号：US20090230952A1

公开(公告)日：2009-09-17

申请号：US12389499

申请日：2009-02-20

申请人： Hisashi Endo ,  Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka

发明人： Hisashi Endo ,  Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka

IPC分类号： G01N27/90

CPC分类号： G01N27/9046

摘要： An eddy current testing device which confirms that a change in characteristics of a target object is detected regardless of the magnitude of the change and specifying the position of a portion from which the change is detected. The device uses an eddy current probe to inspect a bent portion of a metal body, and has an inspection controller and a display unit. The inspection controller calculates a phase angle of a signal detected by the eddy current probe and generates flaw identification image data that indicates an area (or an area of the signal detected and determined to correspond to a flaw signal, based on the phase angle of the detected signal) of a flaw signal in coordinates in which the position of the portion of the target object is plotted along a coordinate axis. The display unit displays the flaw identification image data.

摘要翻译： 一种涡流测试装置，其确认目标对象的特性的变化，而不管变化的大小如何，并且指定检测到变化的部分的位置。 该装置使用涡流探针来检查金属体的弯曲部分，并具有检查控制器和显示单元。 检查控制器计算由涡电流探测器检测的信号的相位角，并产生缺陷识别图像数据，该缺陷识别图像数据指示检测并确定为与缺陷信号相对应的信号的面积，基于相位角 检测信号），其中沿着坐标轴绘制目标对象的部分的位置的坐标中的缺陷信号。 显示单元显示缺陷识别图像数据。

公开(公告)号：US20070229066A1

公开(公告)日：2007-10-04

申请号：US11680857

申请日：2007-03-01

申请人： Soshi Narishige ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuuichi Narumi ,  Hirofumi Ouchi

发明人： Soshi Narishige ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuuichi Narumi ,  Hirofumi Ouchi

IPC分类号： G01R33/14

CPC分类号： G01N27/902

摘要： An eddy current flaw detection sensor is provided which can detect a circumferential crack occurring at the deformed portion or peripheral portion thereof of a heat transfer tube with a high degree of sensitivity. Two excitation coils 1a, 1b cause eddy current B to flow in the axial direction of a tubular test object 31. A detection coil 2 disposed between the excitation coils 1a, 1b detects bypass eddy current D which flows in the circumferential direction of the test object 31 while bypassing a circumferential crack E. For this purpose, the coil axes of the excitation coils 1a, 1b are directed to the radial direction of the cylindrical protection member 3 and the coil axis of the detection coil 2 is directed to the axial direction of the protection member 3.

摘要翻译： 提供一种涡流探伤传感器，其能够以高灵敏度检测在传热管的变形部分或其周边部分处发生的周向裂纹。 两个励磁线圈1a，1b使涡电流B沿管状被检体31的轴向流动。 布置在励磁线圈1a，1b之间的检测线圈2检测旁路涡流D，旁路涡流D绕过周向裂纹E而沿着测试对象31的圆周方向流动。为此，激励线圈1a的线圈轴 ，1b指向圆筒形保护构件3的径向，并且检测线圈2的线圈轴线指向保护构件3的轴向。

公开(公告)号：US20090102473A1

公开(公告)日：2009-04-23

申请号：US12255196

申请日：2008-10-21

申请人： Soshi NARISHIGE ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuichi Narumi

发明人： Soshi NARISHIGE ,  Akira Nishimizu ,  Masahiro Koike ,  Yoshiharu Abe ,  Yuichi Narumi

IPC分类号： G01N27/90

CPC分类号： G01N27/90

摘要： The present invention provides an eddy current testing method and an eddy current testing apparatus that can reduce detection noise to increase the SN ratio thus improving the defect detection accuracy.An eddy current testing sensor includes a pair of excitation coils and a detection coil disposed therebetween. For example, a voltage regulator applies voltages having different amplitudes to the pair of excitation coils so as to reduce detection noise caused by a deformed portion of a heat exchanger tube and a tube plate in a detection signal of the detection coil. Alternatively, for example, an eddy current testing detector applies a first excitation frequency f1, at which tube material noise is reduced to negligible an amplitude, and a second excitation frequency f2, which is higher than the first excitation frequency f1, to the eddy current testing sensor. The phase and gain of a measurement waveform with the second excitation frequency f2 are adjusted and then a differential waveform of the first and second excitation frequencies f1 and f2 is obtained based on an induction voltage detected by the detection coil so as to cancel out tube expansion noise.

摘要翻译： 本发明提供涡流检测方法和涡流检测装置，其可以降低检测噪声以增加SN比，从而提高缺陷检测精度。 涡流检测传感器包括一对励磁线圈和设置在其间的检测线圈。 例如，电压调节器对一对励磁线圈施加具有不同振幅的电压，以便降低由检测线圈的检测信号中的热交换器管和管板的变形部分引起的检测噪声。 或者，例如，涡电流测试检测器将管材噪声降低到可忽略的振幅的第一激励频率f1和高于第一激励频率f1的第二激励频率f2施加到涡流 测试传感器。 调整具有第二激励频率f2的测量波形的相位和增益，然后基于由检测线圈检测到的感应电压获得第一和第二激励频率f1和f2的差分波形，以抵消管膨胀 噪声。