公开(公告)号：US20050068026A1

公开(公告)日：2005-03-31

申请号：US10675822

申请日：2003-09-30

Applicant: Andrew May ,  Changting Wang ,  Yuri Plotnikov

Inventor： Andrew May ,  Changting Wang ,  Yuri Plotnikov

IPC: G01D5/20 ,  G01N27/72 ,  G01N27/90 ,  G01B7/06 ,  G01R33/12

CPC classification number: G01N27/9046

Abstract: In some aspects, the present invention provides a method for estimating at least one measurement/object property of a metal object. The method includes generating a time-varying eddy current in a wall of the metal object utilizing a pulsed-signal transmitter. The method further includes measuring the time-varying eddy current, fitting the time-varying measured eddy current to a parameterized polynomial, and interpreting the parameterized polynomial to determine one or more measurement/object properties of the metal object.

Abstract translation: 在一些方面，本发明提供了一种用于估计金属物体的至少一个测量/物体特性的方法。 该方法包括利用脉冲信号发射器在金属物体的壁上产生时变涡流。 该方法还包括测量时变涡流，将随时间变化的测量的涡流拟合到参数化多项式，以及解释参数化多项式以确定金属物体的一个或多个测量/物体特性。