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31. 发明授权

US07095224B2 Process control and damage monitoring 有权
标题翻译：过程控制和损坏监控
公开(公告)号：US07095224B2
公开(公告)日：2006-08-22
申请号：US10762193
申请日：2004-01-21
申请人： Neil J. Goldfine , Darrell E. Schlicker , Andrew P. Washabaugh , David C. Grundy , Vladimir A. Zilberstein
发明人： Neil J. Goldfine , Darrell E. Schlicker , Andrew P. Washabaugh , David C. Grundy , Vladimir A. Zilberstein
IPC分类号： G01R33/12 , G01B7/00 , G01N27/72
CPC分类号： G01N27/9046 , G01N27/904
摘要： A process control method is described which uses measurements from magnetic field sensors to monitor the condition of material, such as from a heat treatment process. The sensors can be single element sensors or sensor arrays, can be used to periodically inspect selected locations, mounted to the test material, or scanned over the test material to generate two-dimensional images of the material properties. The sensors can be exposed to the same process conditions as the material, such as elevated temperatures, or the shielding layers can be placed between the test material and the sensors to reduce sensor exposure to the processing conditions. Additional property measurements, such as sensor lift-off, can be used to ensure proper sensors operation.
摘要翻译：描述了一种使用来自磁场传感器的测量来监测材料的状况的过程控制方法，例如来自热处理过程。传感器可以是单元件传感器或传感器阵列，可用于周期性地检查安装在测试材料上的选定位置，或扫描测试材料，以产生材料属性的二维图像。传感器可以暴露在与材料相同的工艺条件下，例如升高的温度，或者屏蔽层可以放置在测试材料和传感器之间，以减少传感器暴露于加工条件。额外的性能测量，如传感器剥离，可以用来确保传感器的正确运行。

32. 发明授权

US07038446B1 Dual coil probe for detecting geometric differences while stationary with respect to threaded apertures and fasteners or studs 失效
标题翻译：双线圈探头用于检测相对于螺纹孔和紧固件或螺柱固定的几何差异
公开(公告)号：US07038446B1
公开(公告)日：2006-05-02
申请号：US10723512
申请日：2003-11-26
申请人： William Keely
发明人： William Keely
IPC分类号： G01N27/82
CPC分类号： G01N27/904
摘要： An apparatus and method is disclosed for inspecting contours formed along a predetermined region of a surface on a workpiece formed of an electrically conductive material using eddy current. A probe includes a longitudinal axis and is moveable along a path of travel to a static testing position stationary with respect to the predetermined region to be inspected on a workpiece. At least two coils are spaced longitudinally from one another and supported by the probe to be electrically excited with a predetermined frequency and amplitude while at the static testing position with the stationary probe. Sensors are provided for measuring the excitation voltage of each coil as eddy currents are induced in the electrically conductive material of the workpiece by the coils supported on the probe stationary at the static testing position with respect to the workpiece. A comparison is performed between the measured eddy current signals from the at least two coils, where a non-zero difference after the coils have encountered the predetermined region to be tested represents an end position of the predetermined region formed on the workpiece being tested.
摘要翻译：公开了一种用于检查沿着使用涡流由导电材料形成的工件上的表面的预定区域形成的轮廓的装置和方法。探头包括纵向轴线，并且可沿行进路径移动到相对于要在工件上检查的预定区域静止的静态测试位置。至少两个线圈彼此纵向间隔开并由探头支撑，以在静止探针的静态测试位置处以预定的频率和振幅被电激励。传感器用于测量每个线圈的激励电压，因为在相对于工件在静态测试位置处固定的探头上支撑的探头上的线圈在工件的导电材料中感应出涡流。在来自至少两个线圈的测量的涡流信号之间进行比较，其中在线圈遇到要测试的预定区域之后的非零差代表形成在被测工件上的预定区域的终点位置。

33. 发明授权

US07015690B2 Omnidirectional eddy current probe and inspection system 失效
标题翻译：全向涡流探头和检测系统
公开(公告)号：US07015690B2
公开(公告)日：2006-03-21
申请号：US10856381
申请日：2004-05-27
申请人： Changting Wang , Yuri Alexeyevich Plotnikov , Shridhar Champaknath Nath , William Stewart McKnight , Gigi Olive Gambrell
发明人： Changting Wang , Yuri Alexeyevich Plotnikov , Shridhar Champaknath Nath , William Stewart McKnight , Gigi Olive Gambrell
IPC分类号： G01N27/90 , G01N27/72
CPC分类号： G01N27/902 , G01N27/9033 , G01N27/904
摘要： An omnidirectional eddy current (EC) probe includes at least one EC channel having a first and a second sense coil that are offset in a first (x) and a second (y) direction and overlap in at least one of the directions (x,y). At least one drive coil is configured to generate a probing field for the EC channel in a vicinity of the sense coils. An omnidirectional EC inspection system includes an omnidirectional EC array probe (ECAP) that includes a number of EC channels and drive coils. Each EC channel includes first and second sense coils with opposite polarities. The drive coils have alternating polarities. Electrical connections perform differential sensing for respective EC channels. Corrective drive coils are disposed at respective ends of the EC channels and generate probing fields. An eddy current instrument is connected to the omnidirectional ECAP and receives differential sensing signals from the EC channels.
摘要翻译：全向涡流（EC）探针包括至少一个具有第一和第二感测线圈的EC通道，该第一和第二感测线圈在第一（x）和第二（y）方向上偏移并且在至少一个方向（x， y）。至少一个驱动线圈被配置为在感测线圈附近产生用于EC通道的探测场。全方位的EC检测系统包括一个包括多个EC通道和驱动线圈的全向EC阵列探针（ECAP）。每个EC通道包括具有相反极性的第一和第二感测线圈。驱动线圈具有交替极性。电气连接对相应的EC通道执行差分感测。纠正驱动线圈设置在EC通道的相应末端并产生探测场。涡流仪器连接到全向ECAP，并从EC通道接收差分感测信号。

34. 发明申请

US20050248339A1 Segmented field sensors 审中-公开
标题翻译：分段现场传感器
公开(公告)号：US20050248339A1
公开(公告)日：2005-11-10
申请号：US11056334
申请日：2005-02-11
申请人： Neil Goldfine , Darrell Schlicker , David Grundy , Mark Windoloski , Ian Shay , Andrew Washabaugh
发明人： Neil Goldfine , Darrell Schlicker , David Grundy , Mark Windoloski , Ian Shay , Andrew Washabaugh
IPC分类号： G01N27/82 , G01N27/90
CPC分类号： G01N27/904
摘要： Inductive sensors measure the near surface properties of conducting and magnetic material. A sensor may have primary windings with parallel extended winding segments to impose a spatially periodic magnetic field in a test material. Those extended portions may be formed by adjacent portions of individual drive coils. Sensing elements provided every other half wavelength may be connected together in series while the sensing elements in adjacent half wavelengths are spatially offset. Certain sensors include circular segments which create a circularly symmetric magnetic field that is periodic in the radial direction. Such sensors are particularly adapted to surround fasteners to detect cracks and can be mounted beneath a fastener head. In another sensor, sensing windings are offset along the length of parallel winding segments to provide material measurements over different locations when the circuit is scanned over the test material. The distance from the sensing elements to the ends of the primary winding may be kept constant as the offset space in between sensing elements is varied. An image of the material properties can be provided as the sensor is scanned across the material.
摘要翻译：感应传感器测量导电和磁性材料的近表面性质。传感器可以具有平行延伸的绕组段的初级绕组，以在测试材料中施加空间周期的磁场。这些延伸部分可以由各个驱动线圈的相邻部分形成。每隔一半波长提供的感测元件可以串联连接在一起，而相邻半波长中的感测元件在空间上偏移。某些传感器包括产生在径向周期性的圆形对称磁场的圆形段。这种传感器特别适于围绕紧固件以检测裂缝并且可以安装在紧固件头部下方。在另一个传感器中，感测绕组沿着平行绕组段的长度偏移，以便在电路扫描测试材料时，通过不同位置提供材料测量。当感测元件之间的偏移空间变化时，从感测元件到初级绕组的端部的距离可以保持恒定。当传感器跨越材料扫描时，可以提供材料特性的图像。

35. 发明授权

US06914427B2 Eddy current probe having sensing elements defined by first and second elongated coils and an associated inspection method 失效
标题翻译：具有由第一和第二细长线圈限定的感测元件的涡流探头和相关联的检查方法
公开(公告)号：US06914427B2
公开(公告)日：2005-07-05
申请号：US10389420
申请日：2003-03-14
申请人： Carl B. Gifford , Clyde T. Uyehara
发明人： Carl B. Gifford , Clyde T. Uyehara
IPC分类号： G01N27/90 , G01N27/82 , G01R33/12
CPC分类号： G01N27/904 , G01N27/9026 , G01N27/9073
摘要： An eddy current probe and associated method of inspecting a structure are provided that are capable of generating a two-dimensional image of the structure, generally in real time. The eddy current probe includes an eddy current probe array having a plurality of first and second coils that cross one another to define a plurality of sensing elements. The eddy current probe array may also include a plurality of magnetically permeable core elements located coincident with respective sensing elements and at least partially encircled by respective first and second coils. The eddy current probe may also include an alternating current source electrically connected to the first coils and sense electronics for sensing current induced in the second coils. In operation, the current sensed in the second coils represents at least one characteristic of the structure, such as the electrical conductivity of the structure.
摘要翻译：提供了一种涡流探针和检查结构的相关方法，其能够通常实时地产生结构的二维图像。涡流探头包括具有多个彼此交叉以限定多个感测元件的多个第一和第二线圈的涡流探针阵列。涡流探针阵列还可以包括与相应的感测元件重合并且至少部分地被相应的第一和第二线圈包围的多个磁导芯元件。涡流探针还可以包括电连接到第一线圈的交流电源，并感测用于感测在第二线圈中感应的电流的电子装置。在操作中，在第二线圈中感测的电流表示结构的至少一个特征，例如结构的导电性。

36. 发明申请

US20050083032A1 Self-monitoring metals, alloys and materials 有权
标题翻译：自我监测金属，合金和材料
公开(公告)号：US20050083032A1
公开(公告)日：2005-04-21
申请号：US10937105
申请日：2004-09-08
申请人： Neil Goldfine , Vladimir Zilberstein , David Grundy , Andrew Washabaugh , Darrell Schlicker , Ian Shay , Robert Lyons , Christopher Craven , Christopher Root , Mark Windoloski , Volker Weiss
发明人： Neil Goldfine , Vladimir Zilberstein , David Grundy , Andrew Washabaugh , Darrell Schlicker , Ian Shay , Robert Lyons , Christopher Craven , Christopher Root , Mark Windoloski , Volker Weiss
IPC分类号： G01N27/00 , G01N27/02 , G01N27/24 , G01N27/90
CPC分类号： G01N27/902 , G01N27/023 , G01N27/24 , G01N27/904 , G01N27/9046 , G01N27/9053
摘要： Observability of damage precursor, damage and usage states, or event occurrence may be enhanced by modifying component materials to include self-monitoring materials or by processing test material to alter the surface properties. The properties of the self monitoring materials, such as magnetic permeability or electrical conductivity, are monitored with electromagnetic sensors and provide greater property variations with component condition than the original component material. Processing includes shot peening or laser welding.
摘要翻译：通过修改组分材料以包括自我监测材料或通过加工测试材料以改变表面性质，可以增强损伤前体，损坏和使用状态或事件发生的可观察性。使用电磁传感器监测自我监测材料的特性，例如磁导率或电导率，并且与原始组件材料相比，可提供比组件条件更大的性能变化。处理包括喷丸硬化或激光焊接。

37. 发明申请

US20020130651A1 Eddy-optic sensor for object inspection 失效
标题翻译：用于物体检查的涡流传感器
公开(公告)号：US20020130651A1
公开(公告)日：2002-09-19
申请号：US09812329
申请日：2001-03-19
申请人： Applied Materials, Inc.
发明人： Moshe Sarfaty , Ramaswamy Sreenivasan , Jaim Nulman
IPC分类号： G01R031/00
CPC分类号： G01N27/904 , G01B7/105 , G01B11/0625 , G01N27/023
摘要： A sensor enables simultaneous or sequential eddy current and optical reflectance measurements of conducting film by providing an eddy current inspection coil and a first and a second optical fiber extending axially through the coil. The eddy current inspection coil is excited by a radio frequency generator and induces eddy currents in the conducting film which are sensed using a detector. The conducting film is illuminated by a first optical fiber, and light which is reflected from the conducting film is transmitted by a second optical fiber to a detector. In the case of opaque conducting films, the eddy current sensor measures sheet resistance which is determinative of film thickness. In opaque conducting films, optical reflectance measurements are indicative of characteristics such as grain size and surface oxidation. Eddy current sensing is indicative of sheet resistance which correlates to grain size and film thickness. By providing both optical reflectance and eddy current sensing measurements, conducting film thickness may be accurately determined. Optical reflectance measurements may be used to determine thickness of dielectric films and transparent or semitransparent conducting films directly. The combined use of electrical and optical reflectance signals provides a single probe unit that measures both dielectric and conducting transparent and semi-transparent films.
摘要翻译：传感器通过提供涡流检测线圈和轴向延伸穿过线圈的第一和第二光纤，可以实现导电膜的同时或连续的涡流和光学反射率测量。涡流检测线圈由射频发生器激发，并在导电膜中感应出涡流，使用检测器检测。导电膜被第一光纤照射，并且从导电膜反射的光被第二光纤传输到检测器。在不透明导电膜的情况下，涡流传感器测量薄膜电阻，其决定膜厚度。在不透明导电膜中，光学反射率测量指示诸如晶粒尺寸和表面氧化的特性。涡流感测表示与晶粒尺寸和膜厚度相关的薄层电阻。通过提供光学反射和涡流感测测量，可以精确地确定导电膜厚度。可以使用光学反射率测量来直接确定电介质膜和透明或半透明导电膜的厚度。电光反射信号的组合使用可以测量电介质和导电透明和半透明膜的单个探针单元。

38. 发明授权

US06310476B1 Eddy current flaw detector 有权
标题翻译：涡流探伤仪
公开(公告)号：US06310476B1
公开(公告)日：2001-10-30
申请号：US09091022
申请日：2000-05-24
申请人： Seiichi Kawanami , Masaaki Kurokawa , Takeo Kamimura
发明人： Seiichi Kawanami , Masaaki Kurokawa , Takeo Kamimura
IPC分类号： G01N2782
CPC分类号： G01N27/9053 , G01N27/904
摘要： This invention prevents the failure of detection for horizontal and oblique lift-offs in a probe for an eddy current flaw detection test. A plurality of probes are provided, and each probe includes four detection coils. Two adjacent eddy current flaw detecting probes commonly own (share) one of the four coils. The detection coils are connected to a bridge circuit for picking up a flaw signal. The detection coils are adjusted so that interlinkage magnetic fluxes generated inside the detection coils by the eddy current become equal. An excitation coil for inducing the eddy current in a test piece by AC driving can be disposed over the detection coils. The center of the excitation coil is positioned on the center axes of the detection coils. An oscillator for applying an AC current to this excitation coil is connected to the coil.
摘要翻译：本发明防止了用于涡流探伤试验的探针中的水平和倾斜提升的检测失败。提供多个探针，并且每个探针包括四个检测线圈。两个相邻的涡流探伤探头通常拥有（共享）四个线圈中的一个。检测线圈连接到用于拾取缺陷信号的桥接电路。调整检测线圈，使得通过涡电流在检测线圈内产生的交链磁通变得相等。用于通过AC驱动在试件中感应涡流的励磁线圈可以设置在检测线圈上。励磁线圈的中心位于检测线圈的中心轴上。用于向该励磁线圈施加交流电流的振荡器连接到线圈。

39. 发明授权

US5915277A Probe and method for inspecting an object 失效
标题翻译：用于检查物体的探测器和方法
公开(公告)号：US5915277A
公开(公告)日：1999-06-22
申请号：US880322
申请日：1997-06-23
申请人： Thadd Clark Patton
发明人： Thadd Clark Patton
IPC分类号： G01N27/90 , G01N29/06 , G01N29/24 , G01N9/24
CPC分类号： G01N29/2437 , G01N27/9033 , G01N27/904 , G01N29/06 , G01N29/2412 , G01N2291/2638
摘要： The present invention discloses a probe and method for inspecting a complex shaped object having an irregular surface. In this invention, a flexible film of piezoelectric elements is combined with a flexible film of eddy current elements into a single probe. The probe simultaneously inspects the volume and the surface of the object by using the flexible ultrasonic transducer and the flexible eddy current sensor, respectively.
摘要翻译：本发明公开了一种用于检查具有不规则表面的复杂成形物体的探针和方法。在本发明中，将压电元件的柔性膜与涡流元件的柔性膜组合成单个探针。探头通过使用柔性超声波换能器和柔性涡流传感器分别同时检查物体的体积和表面。

40. 发明授权

US5548214A Electromagnetic induction inspection apparatus and method employing frequency sweep of excitation current 失效
标题翻译：采用激励电流频率扫描的电磁感应检测装置及方法
公开(公告)号：US5548214A
公开(公告)日：1996-08-20
申请号：US980562
申请日：1992-11-23
申请人： Kazuhiko Yasohama , Hiroaki Kohama
发明人： Kazuhiko Yasohama , Hiroaki Kohama
IPC分类号： G01N27/90 , G01N27/82
CPC分类号： G01N27/9086 , G01N27/904
摘要： An electromotive induction current which is detected by an induction coil placed in an electromagnetic field generated by applying an alternating current to an exciting coil distinctively changes with the frequency of the applied alternating current in accordance with the conditions of an object placed in the electromagnetic field. By analyzing the change in amplitude and/or frequency phase of the electromotive induction current, the physical properties, size and relative position of the object and internal defects such as a crack and pin hole in the object can be measured precisely.
摘要翻译：由放置在通过向励磁线圈施加交流电而产生的电磁场中的感应线圈检测到的电动感应电流根据施加的交变电流的频率根据放置在电磁场中的物体的条件而明显地改变。通过分析电动感应电流的振幅和/或频率相位的变化，可以精确地测量物体的物理性质，尺寸和相对位置以及物体中的裂纹和针孔等内部缺陷。

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