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    Method And Apparatus For Inspecting A Workpiece With Angularly Offset Ultrasonic Signals
    1.
    发明申请
    Method And Apparatus For Inspecting A Workpiece With Angularly Offset Ultrasonic Signals 有权
    用于检查具有角度偏移超声波信号的工件的方法和装置

    公开(公告)号：US20080229834A1

    公开(公告)日：2008-09-25

    申请号：US11687950

    申请日：2007-03-19

    申请人： Richard H. Bossi ,  Robert L. Carlsen ,  Gary E. Georgeson

    发明人： Richard H. Bossi ,  Robert L. Carlsen ,  Gary E. Georgeson

    IPC分类号： G01N29/00

    CPC分类号： G01N29/11 ,  G01N29/043 ,  G01N29/221 ,  G01N29/26 ,  G01N29/44 ,  G01N2291/0234 ,  G01N2291/056 ,  G01N2291/101

    摘要： A method and apparatus are provided to identify unacceptable levels of porosity, microcracking or defects attributable to thermal damage. Ultrasonic signals are introduced into the workpiece, such as by means of an ultrasonic transmitter. The ultrasonic signals propagate along a predefined axis of propagation oriented at an offset angle relative to a predefined reference direction oriented normal to the workpiece. Backscattered signals are received, such as by an ultrasonic receiver, from the workpiece. A measure representative of the cumulative energy of the backscattered signals received over a predefined time interval is then determined, such as integration performed by a processing element. An anomalous response may then be detected based upon the measure representative of the cumulative energy of the backscattered signals. This anomalous response may be representative of at least a predefined amount of porosity, microcracking or thermal damage.

    摘要翻译： 提供了一种方法和装置，用于识别由于热损伤引起的不可接受的孔隙率，微裂纹或缺陷水平。 超声波信号被引入工件，例如通过超声波发射器。 超声波信号沿着预定义的传播轴线传播，该传播轴线相对于垂直于工件的预定参考方向以偏移角度定向。 后向散射信号，例如通过超声波接收器从工件接收。 然后确定代表在预定时间间隔上接收的反向散射信号的累积能量的度量，例如由处理元件执行的积分。 然后可以基于表示反向散射信号的累积能量的测量来检测异常响应。 这种异常响应可以代表至少预定量的孔隙率，微裂纹或热损伤。

    Method and apparatus for inspecting a workpiece with angularly offset ultrasonic signals
    4.
    发明授权
    Method and apparatus for inspecting a workpiece with angularly offset ultrasonic signals 有权
    用偏移超声波信号检测工件的方法和装置

    公开(公告)号：US07757558B2

    公开(公告)日：2010-07-20

    申请号：US11687950

    申请日：2007-03-19

    申请人： Richard H. Bossi ,  Robert L. Carlsen ,  Gary E. Georgeson

    发明人： Richard H. Bossi ,  Robert L. Carlsen ,  Gary E. Georgeson

    IPC分类号： G01N9/24

    CPC分类号： G01N29/11 ,  G01N29/043 ,  G01N29/221 ,  G01N29/26 ,  G01N29/44 ,  G01N2291/0234 ,  G01N2291/056 ,  G01N2291/101

    摘要： A method and apparatus are provided to identify unacceptable levels of porosity, microcracking or defects attributable to thermal damage. Ultrasonic signals are introduced into the workpiece, such as by means of an ultrasonic transmitter. The ultrasonic signals propagate along a predefined axis of propagation oriented at an offset angle relative to a predefined reference direction oriented normal to the workpiece. Backscattered signals are received, such as by an ultrasonic receiver, from the workpiece. A measure representative of the cumulative energy of the backscattered signals received over a predefined time interval is then determined, such as integration performed by a processing element. An anomalous response may then be detected based upon the measure representative of the cumulative energy of the backscattered signals. This anomalous response may be representative of at least a predefined amount of porosity, microcracking or thermal damage.

    摘要翻译： 提供了一种方法和装置，用于识别由于热损伤引起的不可接受的孔隙率，微裂纹或缺陷水平。 超声波信号被引入工件，例如通过超声波发射器。 超声波信号沿着预定义的传播轴线传播，该传播轴线相对于垂直于工件的预定参考方向以偏移角度定向。 反向散射信号，例如通过超声波接收器从工件接收。 然后确定代表在预定时间间隔上接收的反向散射信号的累积能量的度量，例如由处理元件执行的积分。 然后可以基于表示反向散射信号的累积能量的测量来检测异常响应。 这种异常响应可以代表至少预定量的孔隙率，微裂纹或热损伤。