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    Method and system of deducing sound velocity using time-of-flight of surface wave
    3.
    发明授权
    Method and system of deducing sound velocity using time-of-flight of surface wave 有权

    公开(公告)号：US10309934B2

    公开(公告)日：2019-06-04

    申请号：US15472449

    申请日：2017-03-29

    申请人： Cécile Brütt ,  Guillaume Painchaud-April ,  Chi-Hang Kwan ,  Benoit Lepage

    发明人： Cécile Brütt ,  Guillaume Painchaud-April ,  Chi-Hang Kwan ,  Benoit Lepage

    IPC分类号： G01N29/26 ,  G01N29/30 ,  G01N29/06 ,  G01N29/07

    摘要： Disclosed is an ultrasonic non-destructive testing and inspection system and method for determining acoustic velocities in a test object. Beams of acoustic energy from firing an element of an emitting probe propagate in a first wedge, and a beam incident at the critical angle generates a surface wave in the test object. The surface wave propagates to a second wedge and signals are received at receiving elements of a receiving probe array. When a set of appropriate delays is applied to the receiving elements, the acoustic time-of-flight is the same to all receiving elements. Determination of the appropriate delays and the times-of-flight for P-type surface waves and Rayleigh surface waves enables computation of the P- and S-wave acoustic velocities in the test object. The time-of-flight measurement also enables computation of the separation between the first and second wedges.

    Automatic calibration for phased array inspection of girth weld
    5.
    发明授权
    Automatic calibration for phased array inspection of girth weld 有权
    自动校准环形焊缝的相控阵检查

    公开(公告)号：US09476859B2

    公开(公告)日：2016-10-25

    申请号：US14107217

    申请日：2013-12-16

    申请人： Jason Habermehl ,  Benoit LePage ,  Guillaume Painchaud-April

    发明人： Jason Habermehl ,  Benoit LePage ,  Guillaume Painchaud-April

    IPC分类号： G01N29/30 ,  G01N29/04 ,  G01N29/26

    CPC分类号： G01N29/30 ,  G01N29/043 ,  G01N29/262 ,  G01N2291/2675

    摘要： A calibration method for calibrating a phased array probe that is used for testing girth welds for defects. The method utilizes a calibration device on which is defined a series of reflectors that correspond to a series of target zones. The phased array probe is placed via a wedge relative to the calibration device and the phased array probe is configured with an initial set of acoustic parameters which define at least a transmitting aperture, a receiving aperture and a beam steering angle. Using a Full Matrix Capture (FMC) acquisition process and a ray-tracing module, the values of the initial set of acoustic parameters are optimized to evolve a final set of acoustic parameters which the phased array probe utilizes for testing actual devices for weld defects.

    摘要翻译： 用于校准用于测试缺陷的环形焊缝的相控阵探头的校准方法。 该方法使用校准装置，其上定义了一系列对应于一系列目标区域的反射器。 相控阵探头通过相对于校准装置的楔形放置，并且相控阵探头配置有至少限定发射孔，接收孔和束转向角的初始声学参数集合。 使用全矩阵捕获（FMC）采集过程和光线跟踪模块，对初始声学参数集合的值进行优化，以演化相位阵列探针用于测试实际设备的焊接缺陷的最终声参数集。

    METHOD OF CONDUCTING PROBE COUPLING CALIBRATION IN A GUIDED-WAVE INSPECTION INSTRUMENT
    10.
    发明申请
    METHOD OF CONDUCTING PROBE COUPLING CALIBRATION IN A GUIDED-WAVE INSPECTION INSTRUMENT 有权
    引导波形检测仪器中探头耦合校准的方法

    公开(公告)号：US20160290972A1

    公开(公告)日：2016-10-06

    申请号：US14674988

    申请日：2015-03-31

    申请人： Benoit Lepage ,  Guillaume Painchaud-April

    发明人： Benoit Lepage ,  Guillaume Painchaud-April

    IPC分类号： G01N29/30 ,  G01N29/28 ,  G01N29/07

    CPC分类号： G01N29/30 ,  G01N29/07 ,  G01N29/226 ,  G01N29/28 ,  G01N2291/0425 ,  G01N2291/262 ,  G01N2291/2634

    摘要： The method for calibrating an inspection instrument coupled with acoustic transducers disposed at circumferential positions distributed around a surface of an elongated object to inspect generally has the steps of: for each one of the circumferential positions, measuring a first and a second received signal using two acoustic transducers disposed at two axial positions along the object, the received signals resulting from the propagation of an acoustic guided wave signal along the object; identifying an acoustic mode according to the first received and the second received signals using a known period of time associated with the propagation of the acoustic guided wave signal between the two axial positions along the object; and determining a coupling coefficient associated with the acoustic mode, the coupling coefficient being indicative of the coupling of the acoustic transducers on the object; and calibrating the inspection instrument coupled to the object based on the coupling coefficients.

    摘要翻译： 用于校准检查仪器的方法，其配置在分布在细长物体的表面周围的周围位置的声学换能器通常具有以下步骤：对于每个圆周位置，使用两个声学测量第一和第二接收信号 传感器设置在沿对象的两个轴向位置处，所述接收信号是沿着物体传播声导波信号而产生的; 使用与沿着物体的两个轴向位置之间的声导波信号的传播相关联的已知时间段来识别根据第一接收和第二接收信号的声学模式; 并且确定与所述声学模式相关联的耦合系数，所述耦合系数指示所述物体上的所述声换能器的耦合; 并且基于耦合系数校准耦合到对象的检查仪器。