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    SYSTEM AND METHOD FOR PERFORMING ULTRASONIC PIPELINE WALL PROPERTY MEASUREMENTS
    1.
    发明公开
    SYSTEM AND METHOD FOR PERFORMING ULTRASONIC PIPELINE WALL PROPERTY MEASUREMENTS 有权
    系统VERFAHREN ZURDURCHFÜHRUNGVON超声波输入管道-WANDEIGENSCHAFTEN

    公开(公告)号：EP2625515A1

    公开(公告)日：2013-08-14

    申请号：EP11770559.0

    申请日：2011-10-07

    申请人： Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： VOLKER, Arno, Willem, Frederik ,  BLOOM, Joost, Gerardus, Petrus

    IPC分类号： G01N29/04 ,  G01N29/44 ,  G01B17/02

    CPC分类号： G01N29/07 ,  G01B17/02 ,  G01N29/04 ,  G01N29/4418 ,  G01N2291/105 ,  G01N2291/2634

    摘要： Pipeline wall thickness is measured as a function of position using ultrasound propagation. A series of predictive models is used, which define predictions of the ultrasound response signals as a function of different sets of parameters. The different sets that are determine of position dependent ultrasound speed at different sound frequencies and different spatial resolution. Successive iterative fitting process are executed, each fitting a combination of values of a successive set of parameters to the detected ultrasound response signals according to a respective model, using the values fitted values from the previous fitting process to initialize the next set of parameters for iterative fitting. At least the first model defines predictions of wave vector values as a function of circumferential position in successive rings around the pipe as sums of wave vector value for a plurality of circumferential positions in a preceding one of the rings multiplied by propagation coefficients, using propagation coefficients that depend on a first set of parameters.

    摘要翻译： 使用超声波传播测量管道壁厚度作为位置的函数。 使用一系列预测模型，其定义了作为不同参数集合的函数的超声响应信号的预测。 确定不同声音频率和不同空间分辨率下位置相关超声速度的不同集合。 执行连续迭代拟合过程，其中使用来自先前拟合过程的值拟合值来初步化用于迭代的下一组参数，根据相应模型，将连续的参数集合的值的组合拟合到检测到的超声响应信号 配件。 至少第一模型将波矢量值的预测定义为围绕管道的连续环中的圆周位置的函数，作为前一个环中的多个圆周位置的乘以传播系数的波矢量值的和，使用传播系数 这取决于第一组参数。