公开(公告)号：US09465008B2

公开(公告)日：2016-10-11

申请号：US14304180

申请日：2014-06-13

Applicant: General Electric Company

Inventor： Daniel Scott Groninger ,  Soundarrajan Kaliaperumal ,  Galen Lee Swyers ,  David George Perrett

IPC: G01N27/90 ,  G01B7/06

CPC classification number: G01N27/9086 ,  G01B7/105 ,  G01N27/9046

Abstract: A method and system for dynamically adjusting a gain of an eddy current device are provided. The method includes providing calibration information to the eddy current device using a probe and switching between a first mode and a second mode of the eddy current device, the first mode exciting only a first coil to measure liftoff of the probe from a surface of a workpiece, the second mode exciting the first coil and a second coil to measure dimensions of a flaw within a workpiece. The method also includes determining a thickness of a non-conductive coating covering at least a portion of the workpiece using the first coil, adjusting a gain setting of the eddy current device based on the determined thickness and the calibration information, and determining dimensions of the flaw using the first and second coils and the adjusted gain setting.

Abstract translation: 提供了用于动态调节涡流装置的增益的方法和系统。 该方法包括使用探头向涡流装置提供校准信息，并且在涡流装置的第一模式和第二模式之间切换，第一模式仅激励第一线圈以测量探头从工件表面起飞 激励第一线圈的第二模式和用于测量工件内的缺陷的尺寸的第二线圈。 该方法还包括使用第一线圈确定覆盖工件的至少一部分的非导电涂层的厚度，基于所确定的厚度和校准信息来调整涡流装置的增益设置，以及确定 使用第一和第二线圈的缺陷和调整的增益设置。

公开(公告)号：US20150362462A1

公开(公告)日：2015-12-17

申请号：US14304180

申请日：2014-06-13

Applicant: General Electric Company

Inventor： Daniel Scott Groninger ,  Soundarrajan Kaliaperumal ,  Galen Lee Swyers ,  David George Perrett

IPC: G01N27/90 ,  G01B7/06

CPC classification number: G01N27/9086 ,  G01B7/105 ,  G01N27/9046

Abstract: A method and system for dynamically adjusting a gain of an eddy current device are provided. The method includes providing calibration information to the eddy current device using a probe and switching between a first mode and a second mode of the eddy current device, the first mode exciting only a first coil to measure liftoff of the probe from a surface of a workpiece, the second mode exciting the first coil and a second coil to measure dimensions of a flaw within a workpiece. The method also includes determining a thickness of a non-conductive coating covering at least a portion of the workpiece using the first coil, adjusting a gain setting of the eddy current device based on the determined thickness and the calibration information, and determining dimensions of the flaw using the first and second coils and the adjusted gain setting.

Abstract translation: 提供了用于动态调节涡流装置的增益的方法和系统。 该方法包括使用探头向涡流装置提供校准信息，并且在涡流装置的第一模式和第二模式之间切换，第一模式仅激励第一线圈以测量探头从工件表面起飞 激励第一线圈的第二模式和用于测量工件内的缺陷的尺寸的第二线圈。 该方法还包括使用第一线圈确定覆盖工件的至少一部分的非导电涂层的厚度，基于所确定的厚度和校准信息来调整涡流装置的增益设置，以及确定 使用第一和第二线圈的缺陷和调整的增益设置。