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    • 4. 发明申请
    • EDDY CURRENT TESTING METHOD AND EDDY CURRENT TESTING APPARATUS
    • EDDY电流测试方法和EDDY电流测试装置
    • US20120161758A1
    • 2012-06-28
    • US13140845
    • 2009-12-14
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • G01R33/12
    • G01N27/902G01N27/82
    • In an eddy current testing method which involves using a rotatable eddy current testing probe in which a detection coil is arranged within an exciting coil, a change in detection sensitivity (a deviation of detection sensitivity) which changes depending on the rotational position of the detection coil is reduced. The eddy current testing probe includes an exciting coil EC1, a detection coil DC1, an exciting coil EC2 and a detection coil DC2, which are mounted on a disk DS. The eddy current testing probe is placed so as to face a circumferential surface of an object to be inspected T, which is in the shape of a circular cylinder, and the disk DS is rotated. Then, the distance (liftoff) between the detection coils DC1 and DC2 and an inspection surface changes. Therefore, also the detection sensitivity to a flaw signal changes. To reduce the change in detection sensitivity, the detection sensitivity is adjusted by detecting the rotational position (rotational angle) of the detection coils DC1 and DC2.
    • 在涡电流测试方法中,涉及使用其中检测线圈布置在励磁线圈内的可旋转涡流测试探针,检测灵敏度的变化(检测灵敏度的偏差)根据检测线圈的旋转位置而变化 降低了。 涡电流测试探头包括安装在盘DS上的励磁线圈EC1,检测线圈DC1,励磁线圈EC2和检测线圈DC2。 将涡电流测试探针放置成面对被检查物体T的圆周表面,该圆形表面呈圆柱形,圆盘DS旋转。 然后,检测线圈DC1和DC2之间的距离(剥离)和检查面发生变化。 因此,对缺陷信号的检测灵敏度也会发生变化。 为了减小检测灵敏度的变化,通过检测检测线圈DC1和DC2的旋转位置(旋转角度)来调节检测灵敏度。
    • 7. 发明授权
    • Eddy current testing method and apparatus for inspecting an object for flaws
    • 用于检查物体的涡流检测方法和装置的缺陷
    • US08803516B2
    • 2014-08-12
    • US13140845
    • 2009-12-14
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • G01R33/12G01N27/90G01N27/82
    • G01N27/902G01N27/82
    • In an eddy current testing method which involves using a rotatable eddy current testing probe in which a detection coil is arranged within an exciting coil, a change in detection sensitivity (a deviation of detection sensitivity) which changes depending on the rotational position of the detection coil is reduced. The eddy current testing probe includes an exciting coil EC1, a detection coil DC1, an exciting coil EC2 and a detection coil DC2, which are mounted on a disk DS. The eddy current testing probe is placed so as to face a circumferential surface of an object to be inspected T, which is in the shape of a circular cylinder, and the disk DS is rotated. Then, the distance (liftoff) between the detection coils DC1 and DC2 and an inspection surface changes. Therefore, also the detection sensitivity to a flaw signal changes. To reduce the change in detection sensitivity, the detection sensitivity is adjusted by detecting the rotational position (rotational angle) of the detection coils DC1 and DC2.
    • 在涡电流测试方法中,涉及使用其中检测线圈布置在励磁线圈内的可旋转涡流测试探针,检测灵敏度的变化(检测灵敏度的偏差)根据检测线圈的旋转位置而变化 降低了。 涡电流测试探头包括安装在盘DS上的励磁线圈EC1,检测线圈DC1,励磁线圈EC2和检测线圈DC2。 将涡电流测试探针放置成面对被检查物体T的圆周表面,该圆形表面呈圆柱形,圆盘DS旋转。 然后,检测线圈DC1和DC2之间的距离(剥离)和检查面发生变化。 因此,对缺陷信号的检测灵敏度也会发生变化。 为了减小检测灵敏度的变化,通过检测检测线圈DC1和DC2的旋转位置(旋转角度)来调节检测灵敏度。