公开(公告)号：US20110148404A1

公开(公告)日：2011-06-23

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： G01R33/12

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：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：US20080004817A1

公开(公告)日：2008-01-03

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： G06F19/00

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：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：US20090009162A1

公开(公告)日：2009-01-08

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： G01N27/90

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。