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1. 发明授权

US07038444B2 System and method for in-line stress measurement by continuous Barkhausen method 有权
标题翻译：通过连续Barkhausen方法进行在线应力测量的系统和方法
公开(公告)号：US07038444B2
公开(公告)日：2006-05-02
申请号：US10708436
申请日：2004-03-03
申请人： Alfred E. Crouch , Gary L. Burkhardt
发明人： Alfred E. Crouch , Gary L. Burkhardt
IPC分类号： G01N27/72
CPC分类号： G01N27/725
摘要： A method and system for performing in-line measurement of stresses in pipeline walls by continuous Barkhausen method comprises an inspection pig including permanent or DC electromagnets for generating a magnetic field that moves with the inspection pig through a pipeline, inductive or other types of magnetic field sensors for reading Barkhausen noise signals generated by the moving magnetic field, and associated instrumentation for amplifying, filtering, detecting and storing the Barkhausen noise signals. The size of the sensors may be selected to match the size of defects being investigated. By comparing trending data over time to determine changes in Barkhausen noise levels, greater detection sensitivity may be achieved. The method may be particularly advantageous for use in inspection pigs that also use magnetic flux leakage to determine pipeline defects, since the magnetic flux leakage method also use permanent or DC electromagnets.
摘要翻译：通过连续的巴克豪森方法对管壁内的应力进行在线测量的方法和系统包括：检查猪，其包括永久或直流电磁铁，用于产生与检查猪一起通过管道移动的磁场，感应或其他类型的磁场用于读取由移动磁场产生的Barkhausen噪声信号的传感器，以及用于放大，滤波，检测和存储Barkhausen噪声信号的相关仪器。可以选择传感器的尺寸以匹配正在研究的缺陷的尺寸。通过比较随时间的趋势数据来确定巴克豪森噪声水平的变化，可以实现更高的检测灵敏度。由于磁通泄漏方法也使用永久或直流电磁铁，所以该方法对于也可以使用磁通泄漏来确定管道缺陷的检查猪中尤为有利。

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

US06239593B1 Method and system for detecting and characterizing mechanical damage in pipelines using nonlinear harmonics techniques 有权
标题翻译：使用非线性谐波技术检测和表征管道机械损伤的方法和系统
公开(公告)号：US06239593B1
公开(公告)日：2001-05-29
申请号：US09157646
申请日：1998-09-21
申请人： Gary L. Burkhardt , Alfred E. Crouch
发明人： Gary L. Burkhardt , Alfred E. Crouch
IPC分类号： G01N2772
CPC分类号： G01B7/24 , G01N27/9046
摘要： A nondestructive method for inspecting steel pipelines for plastically deformed regions caused by mechanical damage to the pipeline. The invention is a method and system that uses nonlinear harmonic detection methods to detect mechanical damage in pipelines. The invention uses a time-varying magnetic field to sense magnetic properties of the pipeline. The odd-numbered harmonic frequencies are detected and their amplitudes are related to the magnetic condition of the material under test to determine areas of mechanical damage. This technique can be used for rapidly surveying stress states in pipelines where nonlinear harmonic sensing devices are attached to a pigging device moving through a pipeline at a relatively high rate of speed.
摘要翻译：用于检查管道机械损坏造成塑性变形区域钢管的非破坏性方法。本发明是使用非线性谐波检测方法来检测管道中的机械损伤的方法和系统。本发明使用时变磁场来检测管道的磁特性。检测奇数谐波频率，其振幅与被测材料的磁条件相关，以确定机械损伤的面积。该技术可用于快速测量管道中的应力状态，其中非线性谐波感测装置以相对较高的速度连接到通过管道移动的清管装置。

4. 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。

5. 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。

6. 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。

7. 发明授权

US06836735B2 Method and system for injecting virtual flaw signals into a nondestructive test system 有权
标题翻译：将虚拟瑕疵信号注入非破坏性测试系统的方法和系统
公开(公告)号：US06836735B2
公开(公告)日：2004-12-28
申请号：US10605091
申请日：2003-09-08
申请人： Gary L. Burkhardt , Jay L. Fisher , Ronald H. Peterson
发明人： Gary L. Burkhardt , Jay L. Fisher , Ronald H. Peterson
IPC分类号： G06F1740
CPC分类号： G09B19/00
摘要： The invention provides an electronic circuit means for injecting virtual flaw signals into the signal path between a NDT test instrument and an associated probe. This enables a system that is capable of generating virtual flaw signals to present virtual flaws to an NDT inspector while enabling the test probe to present actual flaws to the NDT inspector. An eddy current test (ECT) embodiment of the invention comprises a means for deriving a reference signal from an ECT instrument excitation signal, a means for modulating the gain and phase of the reference signal by commands from a control computer, and a means for summing the modulated signal with the ECT probe output signal for transmission to the ECT instrument.
摘要翻译：本发明提供了一种用于将虚拟缺陷信号注入到NDT测试仪器和相关探头之间的信号路径中的电子电路装置。这使得能够产生虚拟缺陷信号的系统能够向NDT检查员呈现虚拟缺陷，同时使测试探针能够向NDT检查员呈现实际的缺陷。本发明的涡流测试（ECT）实施例包括用于从ECT仪器激励信号导出参考信号的装置，用于通过来自控制计算机的命令调制参考信号的增益和相位的装置，以及用于求和的装置调制信号与ECT探头输出信号传输到ECT仪器。

8. 发明授权

US07501814B2 Apparatus and method for second-layer through-bushing inspection of aircraft wing attachment fittings using electric current perturbation 有权
标题翻译：用于使用电流扰动的飞机机翼附件配件的第二层穿套管检查的装置和方法
公开(公告)号：US07501814B2
公开(公告)日：2009-03-10
申请号：US11852247
申请日：2007-09-07
申请人： Clinton J. Thwing , Gary L. Burkhardt
发明人： Clinton J. Thwing , Gary L. Burkhardt
IPC分类号： G01N27/82
CPC分类号： G01N27/87
摘要： A device and methods for using the device, that permit the rapid and accurate inspection of aircraft wing attachment fittings, including those wing to fuselage attachments modified according to a Structural Life Extension Program (SLEP). Such aircraft life extension programs often result in the placement of fitting stack-up components that tend to challenge the ability of standard inspection sensors and techniques to achieve accurate readings. A specially designed, contact compliant, Electric Current Perturbation (ECP) probe is used. The ECP probe positions a receive coil in conjunction with a drive coil (and its ferrite core) in a manner that minimizes steel interferences in the inspection area. The ECP probe works with conventional eddy current instrumentation with an index scanner to allow for flaw location within a particular stack-up layer and/or within the area around the attachment aperture. Data acquired through the use of the system and method of the present invention allows for the rapid discernment of flaws and defects in the area adjacent the probe placement.
摘要翻译：一种用于使用该装置的装置和方法，其允许快速和准确地检查飞机机翼附件配件，包括根据结构寿命延长计划（SLEP）修改的机翼到机身附件。这样的飞机寿命延长程序通常会导致安装组合件倾向于挑战标准检测传感器和技术的能力来实现准确的读数。使用特殊设计的接触式电流扰动（ECP）探头。 ECP探头将接收线圈与驱动线圈（及其铁氧体磁芯）结合起来，以最小化检查区域中的钢铁干扰。 ECP探头与常规的涡流仪器一起使用索引扫描器，以允许在特定堆叠层内和/或附着孔周围的区域内的缺陷位置。通过使用本发明的系统和方法获得的数据允许快速识别与探针放置相邻的区域中的缺陷和缺陷。

9. 发明申请

US20070296964A1 Inspection apparatus 审中-公开
标题翻译：检验仪器
公开(公告)号：US20070296964A1
公开(公告)日：2007-12-27
申请号：US11474789
申请日：2006-06-26
申请人： Mitsugu Nishimura , Gary L. Burkhardt , James F. Crane , Albert J. Parvin
发明人： Mitsugu Nishimura , Gary L. Burkhardt , James F. Crane , Albert J. Parvin
IPC分类号： G01N21/00
CPC分类号： G01N21/954 , G01N21/9515 , G01N2021/9544
摘要： An inspection apparatus performs a visual inspection on inner structural members of a large-scale system from the outside without disassembling the system. The inspection apparatus includes a screw device formed in a tube-like shape which engages with surfaces of internal structural members of the large-scale system while advancing into a narrow pathway of the large-scale system when inserted in the narrow pathway and applied with a rotational force, a video scope having a camera at its end which is inserted in the screw device and protrudes from an end of the screw device to capture images of surfaces of the internal structural members of the large-scale system, and a video monitor for displaying the images from the video scope and controlling a direction of the end of the video scope.
摘要翻译：检查装置从外部对大型系统的内部结构构件进行外观检查而不拆卸系统。检查装置包括形成为管状形状的螺旋装置，当与大尺度系统的内部结构构件的表面接合时，当螺旋装置插入到狭窄的路径中并进入大型系统的狭窄通道时，旋转力，其端部具有相机的视频范围，其插入螺钉装置并从螺钉装置的端部突出以捕获大型系统的内部结构构件的表面的图像;以及视频监视器，用于从视频范围显示图像并控制视频范围结束的方向。

10. 发明授权

US06775625B2 System and method for nondestructive testing simulation 有权
标题翻译：非破坏性测试仿真系统和方法
公开(公告)号：US06775625B2
公开(公告)日：2004-08-10
申请号：US10605089
申请日：2003-09-08
申请人： Gary L. Burkhardt , Jay L. Fisher , Eric C. Peterson
发明人： Gary L. Burkhardt , Jay L. Fisher , Eric C. Peterson
IPC分类号： G06F1740
CPC分类号： G09B19/003 , G09B25/02
摘要： The system and method provides an NDT inspector with a realistic simulation of inspecting a test piece while injecting virtual flaws for display on an NDT instrument, while also presenting actual flaws to the inspector. A conventional NDT test probe and instrument are connected to the system at the probe leads interface. The system provides means for monitoring probe position and probe liftoff, means for storing virtual flaw signals and associated locations on a test piece, and means for providing a virtual flaw signal to the NDT instrumentation to simulate the response of the actual probe. The invention provides for nondestructive test method qualification and probability of detection determination, for establishing and maintaining nondestructive testing proficiency of inspectors, for periodically presenting flaw signals to inspectors during routine inspections, and for ensuring sufficient scan coverage for detection of material defects in a test piece.
摘要翻译：该系统和方法为NDT检查员提供了一个真实的模拟检查试件，同时注入虚拟缺陷以在NDT仪器上显示，同时还向检查员呈现了实际的缺陷。传统的NDT测试探针和仪器在探针引线界面连接到系统。该系统提供用于监测探头位置和探头离开的装置，用于存储虚拟缺陷信号和测试件上的相关位置的装置，以及用于向NDT仪器提供虚拟缺陷信号以模拟实际探针的响应的装置。本发明提供无损检测方法鉴定和检测概率，用于建立和维护检验人员的无损检测能力，在日常检查期间定期向检验人员提供缺陷信号，并确保检测试件中材料缺陷的充分扫描覆盖。

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