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1. 发明授权

US5180969A Detection of reinforcing steel corrosion in concrete structures using non-linear harmonic and intermodulation wave generation 失效
标题翻译：使用非线性谐波和互调波产生检测混凝土结构中的钢筋腐蚀
公开(公告)号：US5180969A
公开(公告)日：1993-01-19
申请号：US830702
申请日：1992-02-04
申请人： Hegeon Kwun , Gary L. Burkhardt , Jay L. Fisher
发明人： Hegeon Kwun , Gary L. Burkhardt , Jay L. Fisher
IPC分类号： G01N27/90
CPC分类号： G01N27/9046 , G01N27/904
摘要： A method for rapidly detecting and locating reinforcing steel corrosion in concrete structures using non-linear harmonic and intermodulated frequencies of electromagnetic signals. The method comprises transmitting either a single primary frequency or two primary frequencies into the concrete structure in the general direction of the reinforcing steel. The reflected/generated signal, which is composed of the primary frequencies and of various harmonics and intermodulation components, is received, filtered, and amplified. A third order harmonic frequency is isolated with a band pass filter, is amplified, and is compared with the amplitudes of the primary frequencies. Intermodulation frequencies, primarily the combination of the primary of a frequency and the second harmonic of a second frequency, or the primary of a second frequency and the second harmonic of a first frequency, are isolated by appropriate band pass filter, are amplified, and are compared with the primary frequency or frequencies. The comparative amplitudes of these harmonics or intermodulation frequencies are displayed and recorded, and are correlated with a degree of corrosion in the reinforcing steel.
摘要翻译：一种使用非线性谐波和电磁信号互调频率快速检测和定位混凝土结构中钢筋腐蚀的方法。该方法包括在钢筋的大致方向上将单个主要频率或两个主要频率传输到混凝土结构中。由主要频率和各种谐波和互调分量组成的反射/产生信号被接收，滤波和放大。三阶谐波频率与带通滤波器隔离，被放大，并与主频率的幅度进行比较。互调频率，主要是频率的初级和第二频率的二次谐波的组合，或第一频率的初级和第一频率的二次谐波由适当的带通滤波器隔离，被放大，并且是与主要频率或频率相比较。显示和记录这些谐波或互调频率的比较幅度，并与加强钢中的腐蚀程度相关。

2. 发明授权

US06779409B1 Measurement of torsional dynamics of rotating shafts using magnetostrictive sensors 有权
标题翻译：使用磁致伸缩传感器测量旋转轴的扭转动力学
公开(公告)号：US06779409B1
公开(公告)日：2004-08-24
申请号：US09355177
申请日：1999-07-27
申请人： Hegeon Kwun , Gary L. Burkhardt , Cecil M. Teller
发明人： Hegeon Kwun , Gary L. Burkhardt , Cecil M. Teller
IPC分类号： G01L302
CPC分类号： G01L3/102 , G01L3/105
摘要： A device and method for the non-contact measurement of dynamic torsion in a rotating shaft using magnetostrictive sensors (MsS). The monitoring and detection system has specially configured magnetostrictive signal detectors that include inductive pick-up coils, in which signals corresponding to localized shaft torques are induced. The basic system sensor utilizes either a permanent DC bias magnet positioned adjacent the rotating shaft or applies a residual magnetic field to the shaft. The techniques described in conjunction with the system are particularly advantageous for on-line monitoring of loaded rotating shafts that are integral parts of power trains, by providing a low-cost and a long-term sensor for acquiring dynamic data of the shaft portion of the machinery system being monitored and/or controlled.
摘要翻译：一种使用磁致伸缩传感器（MsS）在旋转轴中非接触测量动态扭矩的装置和方法。监测和检测系统具有特殊配置的磁致伸缩信号检测器，其包括感应拾取线圈，其中感应对应于局部轴转矩的信号。基本的系统传感器利用与旋转轴相邻定位的永磁直流偏置磁铁或向轴施加残余磁场。结合该系统描述的技术对于在线监测作为动力传动系统的组成部分的负载旋转轴是特别有利的，通过提供一种低成本和长期的传感器来获取动力系统的轴部分的动态数据机械系统被监控和/或控制。

3. 发明授权

US06201391B1 Nonlinear harmonics method and system for measuring degradation in protective coatings 有权
标题翻译：用于测量保护涂层退化的非线性谐波法和系统
公开(公告)号：US06201391B1
公开(公告)日：2001-03-13
申请号：US09168185
申请日：1998-10-07
申请人： Gary L. Burkhardt , Hegeon Kwun
发明人： Gary L. Burkhardt , Hegeon Kwun
IPC分类号： G01B706
CPC分类号： G01N27/82
摘要： A system and method for nondestructive testing of a workpiece having a metallic protective coating utilizing nonlinear harmonics techniques to determine degradation within the metallic protective coating. The invention use a time-varying magnetic field to sense magnetic properties of the protective coating. The odd-numbered harmonic frequencies are detected and their amplitudes are related to the magnetic condition of the material under test to determine coating degradation. When no harmonic signal caused by an induced magnetic field is detected, the coating is not degraded. When a harmonic signal is detected, the coating has degraded. Nonlinear harmonics techniques are used to determine the amount of coating degradation.
摘要翻译：一种用于非金属保护涂层的工件的非破坏性测试的系统和方法，其利用非线性谐波技术来确定金属保护涂层内的退化。本发明使用时变磁场来感测保护涂层的磁性能。检测到奇数个谐波频率，并且其幅度与被测材料的磁条件相关，以确定涂层退化。当没有检测到由感应磁场引起的谐波信号时，涂层不会降解。当检测到谐波信号时，涂层退化。非线性谐波技术用于确定涂层退化的量。

4. 发明授权

US4979125A Non-destructive evaluation of ropes by using transverse impulse vibrational wave method 失效
标题翻译：使用横向脉冲振动波法对绳索进行非破坏性评估
公开(公告)号：US4979125A
公开(公告)日：1990-12-18
申请号：US512037
申请日：1990-04-13
申请人： Hegeon Kwun , Gary L. Burkhardt
发明人： Hegeon Kwun , Gary L. Burkhardt
IPC分类号： B65H63/06 , G01H1/04 , G01N29/04 , G01N29/22 , G06F15/46
CPC分类号： B65H63/06 , G01H1/04 , G01N29/045 , G01N29/227 , G01N2291/2626
摘要： A non-destructive method for evaluating ropes, cables, and strands for flaws and tension is shown. The method permits detecting flaws by recognizing certain vibrational wave amplitude and distribution patterns resulting from striking a test subject with a transverse force. Tension on a test subject is calculated by measuring propagation velocity of the vibrational waves through the test subject. An apparatus is provided which produces vibrational waves in a test subject, measures the amplitude and time distribution of the waves, and displays the measurements for analysis.
摘要翻译：显示了用于评估瑕疵和张力的绳索，电缆和股线的非破坏性方法。该方法允许通过识别由横向力击打测试对象而产生的某些振动波振幅和分布模式来检测缺陷。通过测量通过测试对象的振动波的传播速度来计算测试对象的张力。提供了一种在测试对象中产生振动波的装置，测量波的幅度和时间分布，并显示用于分析的测量值。

5. 发明授权

US08098065B2 Magnetostrictive sensor probe for guided-wave inspection and monitoring of wire ropes/cables and anchor rods 有权
标题翻译：用于导线检测和监测钢丝绳/电缆和锚杆的磁致伸缩传感器探头
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。

6. 发明授权

US07913562B2 Flexible plate magnetostrictive sensor probe for guided-wave inspection of structures 有权
标题翻译：用于结构导波检测的柔性板式磁致伸缩传感器探头
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。

7. 发明申请

US20110025317A1 MsS PROBE FOR GUIDED-WAVE INSPECTION OF FUEL RODS 审中-公开
标题翻译：用于指导燃料油检查的探测员
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。

8. 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。

9. 发明申请

US20070225930A1 Time-gain control method and system for long-range guided-wave inspection and monitoring 有权
标题翻译：用于远程导波检测和监测的时间增益控制方法和系统
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。

10. 发明申请

US20070169549A1 Method and apparatus for sensing fuel levels in tanks 审中-公开
标题翻译：用于检测油箱中油位的方法和装置
公开(公告)号：US20070169549A1
公开(公告)日：2007-07-26
申请号：US11656814
申请日：2007-01-23
申请人： Hegeon Kwun , Ronald H. Peterson
发明人： Hegeon Kwun , Ronald H. Peterson
IPC分类号： G01F23/22
CPC分类号： G01F23/2965
摘要： An apparatus and method are described that utilize longitudinal guided waves propagated along a rod placed in a vehicle fuel tank, or the like, to identify the level of the fuel contained within the tank. The system includes a magnetostrictive sensor (MsS) positioned adjacent to one end of the rod that extends out from the tank. The MsS both generates the guided waves in the rod and detects the reverberating reflected waves within the rod. A permanent magnet may be positioned adjacent the MsS to establish a bias magnetic field in association with the MsS. The system and method detect the waves reverberating in the rod and from the detected signals, measure a degree of wave attenuation. A correlation is made between the measured attenuation change and the actual fuel level within the tank.
摘要翻译：描述了利用沿着放置在车辆燃料箱等中的杆传播的纵向导波的装置和方法，以识别容纳在罐内的燃料的水平。该系统包括一个与从罐延伸出的棒的一端相邻定位的磁致伸缩传感器（MsS）。 MsS都在杆中产生导波并检测杆内的混响反射波。可以将永磁体定位成与MsS相邻以建立与MsS相关联的偏置磁场。该系统和方法检测棒中的波浪和检测到的信号，测量波衰减的程度。在测量的衰减变化和罐内的实际燃料水平之间进行相关。

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