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    Pulsed eddy current sensor probes and inspection methods
    2.
    发明公开
    Pulsed eddy current sensor probes and inspection methods 有权
    Prüfsondeund System mit einer gepulsten Wirbelstromsensoranordnung und Inspektionsverfahren

    公开(公告)号：EP1538441A1

    公开(公告)日：2005-06-08

    申请号：EP04257481.4

    申请日：2004-12-01

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Plotnikov, Yuri Alexeyevich ,  Nath, Shridhar Champaknath ,  Lester, Carl Stephen ,  Rose, Curtis Wayne ,  Batzinger, Thomas James ,  Dewangan, Sandeep Kumar ,  Herd, Kenneth Gordon

    IPC分类号： G01N27/90

    CPC分类号： G01N27/904

    摘要： A pulsed eddy current sensor probe (10) includes a sensor array board (12). A number of sensors (14) are arranged on the sensor array board and are operable to sense and generate output signals from the transient electromagnetic flux in a part (20) being inspected. Each of the sensors has a differential output with a positive and a negative output. At least one drive coil (16) is disposed adjacent to the sensors and is operable to transmit transient electromagnetic flux into the part. A first and a second multiplexer (18, 19) are arranged on the sensor array board and are operable to switch between the sensors. The first and second multiplexers are connected to the positive and negative outputs of the sensors, respectively.

    摘要翻译： 脉冲涡流传感器探针（10）包括传感器阵列板（12）。 多个传感器（14）布置在传感器阵列板上，并且可操作以感测并产生来自被检查的部分（20）中的瞬态电磁通量的输出信号。 每个传感器都有一个带有正和负输出的差分输出。 至少一个驱动线圈（16）设置成与传感器相邻，并且可操作以将瞬态电磁通量传输到该部件中。 第一和第二多路复用器（18,19）布置在传感器阵列板上并且可操作以在传感器之间切换。 第一和第二多路复用器分别连接到传感器的正和负输出。

    Multi-frequency image processing for inspecting parts having complex geometric shapes
    4.
    发明公开
    Multi-frequency image processing for inspecting parts having complex geometric shapes 审中-公开
    对于具有复杂几何形状的部件的检查多频率图像处理

    公开(公告)号：EP1939616A1

    公开(公告)日：2008-07-02

    申请号：EP07123232.6

    申请日：2007-12-14

    申请人： General Electric Company

    发明人： Suh, Ui Won ,  Gambrell, Gigi Olive ,  Mcknight, William Stewart ,  Pisupati, Preeti ,  Mishra, Peyush Kumar ,  Dewangan, Sandeep Kumar ,  Wang, Changting

    IPC分类号： G01N27/90

    CPC分类号： G01N27/9046 ,  G01N27/902 ,  G06K9/4604

    摘要： A method for detecting small cracks (40) and other anomalies on parts (32) having complex geometries is described. The method includes eddy current inspection incorporating collection of data from multi-frequency eddy current signals. Phase analysis is used to combine the multi-frequency data to enhance the signal to noise ratio of the raw inspection image. The image is then reprocessed using a spatiotemporal filter to correlate with the frequency components of the eddy current flaw signal to separate signals associated with cracks and other flaws at edges (34) that would ordinarily be hidden by edge effect signals.

    摘要翻译： 描述了一种用于对零件检测小裂纹（40）等异常现象具有复杂的几何形状的方法（32）。 该方法包括涡流探伤从多频涡流信号结合的数据的收集。 相分析用于多频数据组合以增强信号到原始检查图像的信噪比。 然后，图像是使用一个时空滤波器与涡流探伤信号，以在边缘处分离裂缝和其他缺陷相关联的信号（34）的频率分量相关联重新处理所做将通常由边缘效应信号被隐藏。