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1. 发明授权

US06917196B2 Method and apparatus generating and detecting torsional wave inspection of pipes or tubes 有权
标题翻译：产生和检测管道或管道扭转波检测的方法和装置
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。

2. 发明授权

US07634392B2 Simulation of guided wave reflection signals representing defects in conduits 有权
标题翻译：导波管反射信号的仿真，代表管道中的缺陷
公开(公告)号：US07634392B2
公开(公告)日：2009-12-15
申请号：US10987226
申请日：2004-11-12
申请人： Hegeon Kwun , Sang-Young Kim , Myoung-Seon Choi
发明人： Hegeon Kwun , Sang-Young Kim , Myoung-Seon Choi
IPC分类号： G06F7/60 , G06G7/56 , G06G7/48 , G01B5/28 , G01F1/00 , G01N27/00 , G01N27/82
CPC分类号： G01N29/4472 , G01N29/043 , G01N29/46 , G01N2291/0425 , G01N2291/044
摘要： A method and system for simulating defects in conduits, where the defects are detected using long-range guided-wave inspection techniques. The guided wave interaction with a defect is treated as a one-dimensional problem of plane wave reflection from a boundary of different acoustic impedances. The defect waveform is simulated using an electrical transmission line model and inverse fast Fourier transformation.
摘要翻译：一种用于模拟管道缺陷的方法和系统，其中使用远程导波检测技术检测缺陷。与缺陷的导波相互作用被视为来自不同声阻抗的边界的平面波反射的一维问题。使用电传输线模型和快速傅立叶反变换模拟缺陷波形。

3. 发明申请

US20050182613A1 Simulation of guided wave reflection signals representing defects in conduits 有权
标题翻译：导波管反射信号的仿真，代表管道中的缺陷
公开(公告)号：US20050182613A1
公开(公告)日：2005-08-18
申请号：US10987226
申请日：2004-11-12
申请人： Hegeon Kwun , Sang-Young Kim , Myoung-Seon Choi
发明人： Hegeon Kwun , Sang-Young Kim , Myoung-Seon Choi
IPC分类号： G01N29/04 , G01N29/44 , G01N29/46 , G06F19/00
CPC分类号： G01N29/4472 , G01N29/043 , G01N29/46 , G01N2291/0425 , G01N2291/044
摘要： A method and system for simulating defects in conduits, where the defects are detected using long-range guided-wave inspection techniques. The guided wave interaction with a defect is treated as a one-dimensional problem of plane wave reflection from a boundary of different acoustic impedances. The defect waveform is simulated using an electrical transmission line model and inverse fast Fourier transformation.
摘要翻译：一种用于模拟管道缺陷的方法和系统，其中使用远程导波检测技术检测缺陷。与缺陷的导波相互作用被视为来自不同声阻抗的边界的平面波反射的一维问题。使用电传输线模型和快速傅立叶反变换模拟缺陷波形。

4. 发明授权

US06429650B1 Method and apparatus generating and detecting torsional wave inspection of pipes or tubes 有权
标题翻译：产生和检测管道或管道扭转波检测的方法和装置
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。

5. 发明授权

US07019520B2 Method and system for torsional wave inspection of heat exchanger tubes 有权
标题翻译：换热器管扭转波检测方法及系统
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。

6. 发明授权

US07474092B1 Method and device for long-range guided-wave inspection of fire side of waterwall tubes in boilers 有权
标题翻译：锅炉水管火灾侧远程导波检测方法及装置
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。

7. 发明授权

US07852073B2 Method and device for long-range torsional guided-wave inspection of piping with a partial excitation and detection around the pipe circumference 有权
标题翻译：管道围绕管道进行部分激励和检测的远程扭转导波检测方法和装置
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。

8. 发明授权

US06396262B2 Method and apparatus for short term inspection or long term structural health monitoring 有权
标题翻译：用于短期检查或长期结构健康监测的方法和装置
公开(公告)号：US06396262B2
公开(公告)日：2002-05-28
申请号：US09855460
申请日：2001-05-15
申请人： Glenn M. Light , Hegeon Kwun , Sang-Young Kim , Robert L. Spinks, Jr.
发明人： Glenn M. Light , Hegeon Kwun , Sang-Young Kim , Robert L. Spinks, Jr.
IPC分类号： G01N2782
CPC分类号： G01N29/11 , G01N17/006 , G01N29/2412 , G01N2291/0421 , G01N2291/0422 , G01N2291/0428 , G01N2291/044 , G01N2291/2632 , G01N2291/2634
摘要： A method and apparatus is shown for implementing magnetostrictive sensor techniques for the nondestructive short term inspection or long term monitoring of a structure. A plurality of magnetostrictive sensors are arranged in parallel on the structure and includes (a) a thin ferromagnetic strip that has residual magnetization, (b) that is coupled to the structure with a couplant, and (c) a coil located adjacent the thin ferromagnetic strip. By a transmitting coil, guided waves are generated in a transmitting strip and coupled to the structure and propagate along the length of the structure. For detection, the reflected guided waves in the structure are coupled to a receiving strip and are detected by a receiving magnetostrictive coil. Reflected guided waves may represent defects in the structure.
摘要翻译：示出了用于实现用于非破坏性短期检查或结构的长期监测的磁致伸缩传感器技术的方法和装置。多个磁致伸缩传感器平行地布置在该结构上，并且包括（a）具有剩余磁化的薄铁磁条，（b）耦合到具有耦合剂的结构，以及（c）位于薄铁磁体附近的线圈跳闸。通过发射线圈，在传输条带中产生导波并且耦合到该结构并沿结构的长度传播。为了检测，结构中的反射导波耦合到接收条，并由接收磁致伸缩线圈检测。反射导波可能代表结构的缺陷。

9. 发明申请

US20080315872A1 Method and device for long-range torsional guided-wave inspection of piping with a partial excitation and detection around the pipe circumference 有权
标题翻译：管道围绕管道进行部分激励和检测的远程扭转导波检测方法和装置
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。

10. 再颁专利

USRE40515E1 Method and apparatus for inspecting pipelines from an in-line inspection vehicle using magnetostrictive probes 有权
标题翻译：用于使用磁致伸缩探头检查来自在线检测车辆的管道的方法和装置
公开(公告)号：USRE40515E1
公开(公告)日：2008-09-23
申请号：US10900903
申请日：2004-07-28
申请人： Hegeon Kwun , Sang Young Kim
发明人： Hegeon Kwun , Sang Young Kim
IPC分类号： G01N27/82 , G01N29/14 , G01N29/28 , G01N33/12
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 system for implementing magnetostrictive sensor techniques for the nondestructive evaluation of pipeline structures. The system consists of a magnetostrictive sensor instrument unit, a data storage unit, and a plurality of magnetostrictive sensor probes are positioned on an in-line inspection vehicle. The instrumentation unit includes electronics for transmitting excitation pulses to a transmitting magnetostrictive sensor probe as well as electronics for amplifying and conditioning the signals detected by a receiving magnetostrictive sensor probe. The magnetostrictive sensor probes include both plate magnetostrictive sensors and permanent magnets which provide a DC bias magnetic field necessary for magnetostrictive sensor operation. The transmitting and receiving probes are attached to the in-line inspection vehicle by way of mechanical arms on opposing sides of the vehicle. The mechanical arms are spring loaded and are equipped with rollers which maintain the probes at approximately constant distances from the inside diameter of the pipe wall. The method involves generating pulses of shear horizontal waves of frequencies less than 200 kHz. The transmitting magnetostrictive sensor probe generates a wave that propagates in both directions around the circumference of the pipe wall from a point adjacent to the transmitting probe. Both waves are thereafter received at the receiving probe spaced 180 degrees apart from the transmitting probe. Any defect present in the pipe wall within the circumference being investigated will show up in the received signal.
摘要翻译：一种用于实现用于管道结构无损评估的磁致伸缩传感器技术的方法和系统。该系统包括磁致伸缩传感器仪器单元，数据存储单元和多个磁致伸缩传感器探针位于在线检测车辆上。仪器单元包括用于将激励脉冲发送到发射磁致伸缩传感器探针的电子器件以及用于放大和调节由接收磁致伸缩传感器探针检测的信号的电子器件。磁致伸缩传感器探头包括板磁致伸缩传感器和永磁体，其提供用于磁致伸缩传感器操作所需的DC偏置磁场。发射和接收探头通过机械臂在车辆的相对侧附接到在线检查车辆。机械臂是弹簧加载的，并且配备有将探针保持在与管壁的内径大致恒定距离的辊。该方法涉及产生频率小于200kHz的剪切水平波的脉冲。发射磁致伸缩传感器探头产生一个从邻近发射探头的点沿管壁的圆周两个方向传播的波。此后两个波在与发射探头间隔180度的接收探头处接收。在所研究的圆周内的管壁中存在的任何缺陷将显示在接收信号中。

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