公开(公告)号：US07474092B1

公开(公告)日：2009-01-06

申请号：US11778256

申请日：2007-07-16

申请人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

发明人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

IPC分类号： G01N27/82 ,  G01N27/00 ,  G01R33/18

CPC分类号： G01N29/2412 ,  G01N29/043 ,  G01N29/226 ,  G01N29/265 ,  G01N29/28 ,  G01N2291/0422 ,  G01N2291/044 ,  G01N2291/2634 ,  G01N2291/2695 ,  G01R33/18

摘要： Methods and devices for inspecting waterwall tubes for the detection of fire side damage over a long length of the tube are described. The system of the invention uses a magnetostrictive strip and a flat coil-type plate magnetostrictive sensor (MsS) that are held in place on the waterwall using a specially designed frame and an electromagnetic circuit. The magnetostrictive strip and plate type MsS are positioned against a tube in the waterwall using an elastomeric pad or a fluid filled bladder to achieve close contact and good mechanical coupling between the magnetostrictive strip and the tube surface. When current activated, the electromagnet holds the entire assembly in place and provides a DC bias magnetic field required for plate magnetostrictive sensor probe operation. Long-range guided-waves are pulsed into the tube and reflected signals are detected within the same sensor structure. The received signal data representative of a long section of the tube under investigation is then analyzed for the presence of anomalies and defects. When data acquisition for a particular tube or tube section is completed the electromagnet is turned off and the entire device is moved to the next tube in the waterwall.

摘要翻译： 描述了用于检测水壁管用于检测长管长度上的火侧损伤的方法和装置。 本发明的系统采用使用专门设计的框架和电磁电路将水平保持在水壁上的磁致伸缩带和扁平线圈型磁致伸缩传感器（MsS）。 磁致伸缩条和板型MsS使用弹性垫或流体填充的气囊来抵靠水壁中的管定位，以实现磁致伸缩带与管表面之间的紧密接触和良好的机械耦合。 当电流激活时，电磁铁将整个组件保持就位，并提供板式磁致伸缩传感器探头操作所需的直流偏置磁场。 将长程导波脉冲入管内，并在同一传感器结构内检测反射信号。 然后分析表示正在研究的管的长截面的接收信号数据是否存在异常和缺陷。 当特定管或管段的数据采集完成时，电磁铁被关闭，并且整个装置移动到水壁中的下一个管。

公开(公告)号：US07852073B2

公开(公告)日：2010-12-14

申请号：US11823113

申请日：2007-06-25

申请人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

发明人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

IPC分类号： G01N27/82

CPC分类号： G01N27/82 ,  G01N29/223 ,  G01N29/2412 ,  G01N2291/0425 ,  G01N2291/044 ,  G01N2291/2634

摘要： Sensor assemblies and methods are described that facilitate the use of a long-range torsional guided-wave inspection system for inspecting pipes, tubes, or other longitudinal cylindrical structures, with a partial excitation and detection around the pipe circumference. The sensor assemblies comprise a plate-type magnetostrictive sensor probe positioned beneath a compressible/expandable bladder and an inverted U-shaped frame that retain and position the sensor probe against the external wall of the pipe under inspection. Preferably, a magnetostrictive strip is positioned in direct contact with the pipe wall over which the plate magnetostrictive sensor probe is positioned. The probe is preferably curved to match the curvature of the external surface of the pipe. A pad may be positioned between the probe and the magnetostrictive strip to improve compliance with irregular pipe surfaces. The frame (and therefore the sensor assembly) is held in place by a belt that encircles the pipe and may be tensioned in order to pull the frame against the pipe, and through the compressive force associated with the bladder, direct the magnetostrictive sensor probe against the surface of the pipe or against the magnetostrictive strip positioned on the surface of the pipe. Methods are described for placement of the magnetostrictive strip and the positioning of the magnetostrictive sensor probe.

摘要翻译： 描述了传感器组件和方法，其便于使用用于检查管道，管或其它纵向圆柱形结构的远程扭转导波检查系统，并且围绕管圆周进行部分激励和检测。 传感器组件包括定位在可压缩/可膨胀气囊下方的板式磁致伸缩传感器探头和倒置的U形框架，其将传感器探针保持并定位在被检查管道的外壁上。 优选地，磁致伸缩条被定位成与板状磁致伸缩传感器探针所在的管壁直接接触。 探针优选地弯曲以匹配管的外表面的曲率。 垫可以位于探针和磁致伸缩条之间，以改善与不规则管表面的顺应性。 框架（因此传感器组件）通过围绕管道的带保持就位，并且可以被张紧以便将框架拉向管道，并且通过与气囊相关联的压缩力将磁致伸缩传感器探针对着 管的表面或位于管的表面上的磁致伸缩条。 描述了用于磁致伸缩带的放置和磁致伸缩传感器探针的定位的方法。

公开(公告)号：US20080315872A1

公开(公告)日：2008-12-25

申请号：US11823113

申请日：2007-06-25

申请人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

发明人： Hegeon Kwun ,  Hirotoshi Matsumoto ,  James F. Crane

IPC分类号： G01N27/82

CPC分类号： G01N27/82 ,  G01N29/223 ,  G01N29/2412 ,  G01N2291/0425 ,  G01N2291/044 ,  G01N2291/2634

摘要： Sensor assemblies and methods are described that facilitate the use of a long-range torsional guided-wave inspection system for inspecting pipes, tubes, or other longitudinal cylindrical structures, with a partial excitation and detection around the pipe circumference. The sensor assemblies comprise a plate-type magnetostrictive sensor probe positioned beneath a compressible/expandable bladder and an inverted U-shaped frame that retain and position the sensor probe against the external wall of the pipe under inspection. Preferably, a magnetostrictive strip is positioned in direct contact with the pipe wall over which the plate magnetostrictive sensor probe is positioned. The probe is preferably curved to match the curvature of the external surface of the pipe. A pad may be positioned between the probe and the magnetostrictive strip to improve compliance with irregular pipe surfaces. The frame (and therefore the sensor assembly) is held in place by a belt that encircles the pipe and may be tensioned in order to pull the frame against the pipe, and through the compressive force associated with the bladder, direct the magnetostrictive sensor probe against the surface of the pipe or against the magnetostrictive strip positioned on the surface of the pipe. Methods are described for placement of the magnetostrictive strip and the positioning of the magnetostrictive sensor probe.

摘要翻译： 描述了传感器组件和方法，其便于使用用于检查管道，管或其它纵向圆柱形结构的远程扭转导波检查系统，并且围绕管圆周进行部分激励和检测。 传感器组件包括定位在可压缩/可膨胀气囊下方的板式磁致伸缩传感器探头和倒置的U形框架，其将传感器探针保持并定位在被检查管道的外壁上。 优选地，磁致伸缩条被定位成与板状磁致伸缩传感器探针所在的管壁直接接触。 探针优选地弯曲以匹配管的外表面的曲率。 垫可以位于探针和磁致伸缩条之间，以改善与不规则管表面的顺应性。 框架（因此传感器组件）通过围绕管道的带保持就位，并且可以被张紧以便将框架拉向管道，并且通过与气囊相关联的压缩力将磁致伸缩传感器探针对着 管的表面或位于管的表面上的磁致伸缩条。 描述了用于磁致伸缩带的放置和磁致伸缩传感器探针的定位的方法。

公开(公告)号：US06917196B2

公开(公告)日：2005-07-12

申请号：US10665609

申请日：2003-09-19

申请人： Hegeon Kwun ,  Sang-Young Kim ,  James F. Crane ,  Myoung-Seon Choi

发明人： Hegeon Kwun ,  Sang-Young Kim ,  James F. Crane ,  Myoung-Seon Choi

IPC分类号： G01N29/11 ,  G01N29/24 ,  G01N27/82

CPC分类号： G01N29/2412 ,  G01N29/11 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/0428 ,  G01N2291/044 ,  G01N2291/2632 ,  G01N2291/2634

摘要： A method and apparatus for implementing magnetostrictive sensor techniques for the nondestructive evaluation of pipes or tubes. A magnetostrictive sensor generates guided waves in a pipe or tube, which waves travel therethrough in a direction parallel to the longitudinal axis of the pipe or tube. This is achieved by using a magnetized ferromagnetic strip being pressed circumferentially against the pipe or tube. For improved efficiency, the strip may be made from an iron-cobalt alloy. The guided waves are generated in the strip and coupled to the pipe or tube and propagate along the length of said pipe or tube. For detection, the guided waves in the pipe or tube are coupled to the thin ferromagnetic strip and are detected by receiving MsS coils. Reflected guided waves may represent defects in the pipe or tube.

摘要翻译： 一种用于实现用于管或管的非破坏性评估的磁致伸缩传感器技术的方法和装置。 磁致伸缩传感器在管或管中产生导波，该波在与管或纵管轴线平行的方向上穿过其中。 这是通过使用被磁化的铁磁条沿周向压靠在管或管上来实现的。 为了提高效率，带材可以由铁 - 钴合金制成。 引导波在条带中产生并且耦合到管或管并且沿着所述管或管的长度传播。 为了检测，管或管中的导波耦合到薄铁磁条，并通过接收MsS线圈来检测。 反射的导波可能代表管或管中的缺陷。

公开(公告)号：US06429650B1

公开(公告)日：2002-08-06

申请号：US09815219

申请日：2001-03-22

申请人： Hegeon Kwun ,  Sang-Young Kim ,  James F. Crane

发明人： Hegeon Kwun ,  Sang-Young Kim ,  James F. Crane

IPC分类号： G01N2782

CPC分类号： G01N29/11 ,  G01N29/2412 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/044 ,  G01N2291/2623 ,  G01N2291/2632 ,  G01N2291/2634

摘要： A method and apparatus is shown for implementing magnetostrictive sensor techniques for the nondestructive evaluation of pipes or tubes. A magnetostrictive sensor generates guided waves in a pipe or tube, which waves travel therethrough in a direction parallel to the longitudinal axis of the pipe or tube. This is achieved by using a magnetized ferromagnetic strip being pressed circumferentially against the pipe or tube. The guided waves are generated in the strip and coupled to the pipe or tube and propagate along the length of said pipe or tube. For detection, the guided waves in said pipe or tube are coupled to the thin ferromagnetic strip and are detected by receiving MsS coils. Reflected guided waves may represent defects in the pipe or tube.

摘要翻译： 示出了用于实现用于管或管的非破坏性评估的磁致伸缩传感器技术的方法和装置。 磁致伸缩传感器在管或管中产生导波，该波在与管或纵管轴线平行的方向上穿过其中。 这是通过使用被磁化的铁磁条沿周向压靠在管或管上来实现的。 引导波在条带中产生并且耦合到管或管并且沿着所述管或管的长度传播。 为了检测，所述管或管中的导波耦合到薄铁磁条，并通过接收MsS线圈来检测。 反射的导波可能代表管或管中的缺陷。

公开(公告)号：US07019520B2

公开(公告)日：2006-03-28

申请号：US10711747

申请日：2004-10-01

申请人： Hegeon Kwun ,  James F. Crane ,  Sang-Young Kim

发明人： Hegeon Kwun ,  James F. Crane ,  Sang-Young Kim

IPC分类号： G01N27/82 ,  G01M15/00 ,  G01M13/00

CPC分类号： G01N27/82

摘要： The invention provides an improved method and device for inspecting heat exchanger tubes from within the tube inside diameter that overcomes the shortcomings of the prior art. It adapts a guided-wave probe approach that makes use of a torsional wave mode instead of a longitudinal wave node disclosed in the prior art. The torsional wave mode has many advantages over the longitudinal wave mode for detecting defects. When energized by suitable instrumentation, the probe is caused to generate a torsional mode signal that is transmitted to the heat exchanger tube from the waveguide tube. When reflected signals from defects in the heat exchanger tube walls are returned to the inspection opening end of the heat exchanger tube, the reflected defect signals are transmitted to the probe waveguide tube for amplification, detection and characterization of the reflected signal.

摘要翻译： 本发明提供一种改进的方法和装置，用于从管内径检测热交换器管，克服了现有技术的缺点。 它适应了使用扭转波模式而不是现有技术中公开的纵波节点的导波探测方法。 扭转波模式比用于检测缺陷的纵波模式具有许多优点。 当通过适当的仪器通电时，使探头产生从波导管传递到热交换器管的扭转模式信号。 当来自热交换器管壁中的缺陷的反射信号返回到热交换器管的检查开口端时，反射的缺陷信号被传输到探针波导管，用于放大，检测和表征反射信号。

公开(公告)号：US08098065B2

公开(公告)日：2012-01-17

申请号：US12411335

申请日：2009-03-25

申请人： Hegeon Kwun ,  Albert J. Parvin, Jr. ,  Erika Christine Laiche

发明人： Hegeon Kwun ,  Albert J. Parvin, Jr. ,  Erika Christine Laiche

IPC分类号： G01N27/82 ,  G01H11/04

CPC分类号： G01N29/2412 ,  G01N2291/2626

摘要： An economical, flexible, magnetostrictive sensor (MsS) probe assembly for use on longitudinal cylindrical structures, for guided-wave, volumetric inspection of the structures is described. The paired flexible plate MsS probes each include a flexible strip of magnetostrictive material that is positioned and/or adhered to the base of a generally flat, flexible, conductor coil assembly, preferably with an elastomeric adhesive. The conductor coil assembly has a core composed of a thin flexible layer of metal and a thin bendable permanent magnet circuit. The flexible core is surrounded by a flat flexible cable (FFC) that is folded and looped over the layers of the core. The exposed conductors at the ends of the FFC are shifted from each other by one conductor spacing and joined together so that the parallel conductors in the FFC form a flat, flexible, continuous coil. The probe assemblies may preferably be utilized in pairs and conformed to match the curved contours of the cylindrical surface of the structure under investigation in a manner that is specifically tailored for wire rope, cable, and anchor rod type applications.

摘要翻译： 描述了一种用于纵向圆柱形结构的经济，灵活，磁致伸缩传感器（MsS）探头组件，用于导波，体积检查结构。 成对的柔性板MsS探针各自包括柔性的磁致伸缩材料条，其被定位和/或粘附到基本上平坦，柔性的导体线圈组件的基部，优选地具有弹性体粘合剂。 导体线圈组件具有由薄的柔性金属层和薄的可弯曲的永磁体电路构成的芯。 柔性芯由平坦的柔性电缆（FFC）包围，该柔性电缆被折叠并环绕在芯的层上。 FFC端部的暴露的导体彼此间隔一个导体间距并连接在一起，使得FFC中的平行导体形成平坦，柔性，连续的线圈。 探针组件可以优选成对使用并且使其符合调查结构的圆柱形表面的弯曲轮廓，其方式是专门针对钢丝绳，电缆和锚杆型应用。

公开(公告)号：US07913562B2

公开(公告)日：2011-03-29

申请号：US12201989

申请日：2008-08-29

申请人： Hegeon Kwun ,  Albert J. Parvin ,  Ronald H. Peterson

发明人： Hegeon Kwun ,  Albert J. Parvin ,  Ronald H. Peterson

IPC分类号： G01N29/04 ,  G01N29/00

CPC分类号： G01N29/2412 ,  G01N29/043 ,  G01N2291/0425

摘要： An economical, flexible, magnetostrictive sensor for use on planar and/or curved structural surfaces, for guided-wave volumetric inspection of the structure. The flexible plate MsS probe includes a flexible strip of magnetostrictive material that is adhered to the base of a flat, flexible, conductor coil assembly. The conductor coil assembly has a core that is composed of a thin flexible strip of metal, a layer of an elastomeric material, and a thin permanent magnet circuit. The flexible core is surrounded by a flat flexible cable (FFC) that is folded and looped over the layers of the core. The exposed conductors at the ends of the FFC are shifted from each other by one conductor and joined so that the parallel conductors in the FFC form a flat, flexible, continuous coil. The entire probe assembly may be bent to match the curved contours of the surface of the structure under investigation.

摘要翻译： 用于平面和/或弯曲结构表面的经济，灵活的磁致伸缩传感器，用于结构的导波体积检查。 柔性板MsS探针包括粘附到扁平，柔性的导体线圈组件的基部的柔性带状磁致伸缩材料。 导体线圈组件具有由薄的柔性金属条，弹性体材料层和薄的永磁体电路组成的芯。 柔性芯由平坦的柔性电缆（FFC）包围，该柔性电缆被折叠并环绕在芯的层上。 FFC端部的暴露导体彼此相互移动一根导线，使FFC中的平行导体形成一个扁平，柔性，连续的线圈。 整个探针组件可以被弯曲以匹配被调查结构的表面的弯曲轮廓。

公开(公告)号：US20110025317A1

公开(公告)日：2011-02-03

申请号：US12845808

申请日：2010-07-29

申请人： Hegeon Kwun ,  Albert Joseph Parvin, JR. ,  Rolf Glauser

发明人： Hegeon Kwun ,  Albert Joseph Parvin, JR. ,  Rolf Glauser

IPC分类号： G01N27/82

CPC分类号： G21C17/06 ,  G01D5/485

摘要： The present application discloses a magnetostrictive sensor (MsS) probe for guided-wave inspection of the entire length of a fuel rod. The probe includes a waveguide adapted to be clamped to a fuel rod, and an MsS adapted to generate guided waves into the waveguide such that the guided waves propagate down the waveguide into the fuel rod and back to the waveguide for detection by the MsS.

摘要翻译： 本申请公开了一种用于对燃料棒的整个长度进行导波检测的磁致伸缩传感器（MsS）探针。 探头包括适于被夹持到燃料棒的波导和适于产生导波到波导中的导引波的MsS，使得导波沿着波导向下传播到燃料棒中并返回到波导以由MsS检测。

公开(公告)号：US20070225930A1

公开(公告)日：2007-09-27

申请号：US11715655

申请日：2007-03-08

申请人： Hegeon Kwun ,  Ronald Peterson

发明人： Hegeon Kwun ,  Ronald Peterson

IPC分类号： G06F19/00 ,  G06F17/40

CPC分类号： G01N29/4463 ,  G01N29/42 ,  G01N2291/02854 ,  G01N2291/0425 ,  G01N2291/267

摘要： Systems and methods are described that carry out an intelligent, variable, time-gain control (TGC) of signal amplification in a long-range, guided-wave inspection and monitoring system. The systems and methods compensate for signal attenuation over the longer distances that guided-wave inspection techniques are capable of operating with. The sensor signal received is divided into relevant frequency bands that are each subjected to a variable TGC through separate variable gain amplifiers (VGAs). The gain selection is processor controlled through the use of a digital look-up table (LUT) stored with predetermined gain functions and/or data that are both time and frequency specific. The signal components are re-combined and digitized for further signal analysis and defect detection. The LUT is established through one or more methods including a weld signal amplitude equalization approach and a background noise equalization approach.

摘要翻译： 描述了在远程导波检测和监测系统中执行信号放大的智能，可变的时间增益控制（TGC）的系统和方法。 这些系统和方法可以补偿导波检测技术能够运行的更长距离的信号衰减。 所接收的传感器信号被分成相关的频带，每个频带通过单独的可变增益放大器（VGA）经受可变TGC。 通过使用存储有既具有时间和频率特性的预定增益函数和/或数据的数字查找表（LUT）来对增益选择进行处理器控制。 信号分量被重新组合和数字化，用于进一步的信号分析和缺陷检测。 LUT通过一种或多种方法建立，包括焊接信号幅度均衡方法和背景噪声均衡方法。