公开(公告)号：US20120013334A1

公开(公告)日：2012-01-19

申请号：US13247059

申请日：2011-09-28

申请人： Yanko Konstantinov Sheiretov ,  Neil J. Goldfine ,  Andrew P. Washabaugh ,  Darrell E. Schlicker

发明人： Yanko Konstantinov Sheiretov ,  Neil J. Goldfine ,  Andrew P. Washabaugh ,  Darrell E. Schlicker

IPC分类号： G01R33/07 ,  G01R33/09

CPC分类号： G01N27/82 ,  G01N27/902

摘要： Magnetic field sensor probes are disclosed which comprise primary or drive windings having a plurality of current carrying segments. The relative magnitude and direction of current in each segment are adjusted so that the resulting interrogating magnetic field follows a desired spatial distribution. By changing the current in each segment, more than one spatial distribution for the magnetic field can be imposed within the same sensor footprint. Example envelopes for the current distributions approximate a sinusoid in Cartesian coordinates or a first-order Bessel function in polar coordinates. One or more sensing elements are used to determine the response of a test material to the magnetic field. These sense elements can be configured into linear or circumferential arrays.

摘要翻译： 公开了磁场传感器探针，其包括具有多个载流段的初级或驱动绕组。 调整每个段中的电流的相对幅度和方向，使得所得到的询问磁场遵循所需的空间分布。 通过改变每个段中的电流，可以在相同的传感器覆盖区内施加多于一个磁场的空间分布。 当前分布的示例包络近似于笛卡尔坐标中的正弦波或极坐标中的一阶贝塞尔函数。 一个或多个感测元件用于确定测试材料对磁场的响应。 这些感测元件可以被配置成线性或圆周阵列。

公开(公告)号：US07876094B2

公开(公告)日：2011-01-25

申请号：US12080743

申请日：2008-04-04

申请人： Neil J. Goldfine ,  Ian C. Shay ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  David C. Grundy ,  Robert J. Lyons ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

发明人： Neil J. Goldfine ,  Ian C. Shay ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  David C. Grundy ,  Robert J. Lyons ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

IPC分类号： G01N27/72 ,  G01N27/82 ,  G01N33/12

CPC分类号： G01N27/9013

摘要： Described are methods for monitoring of stresses and other material properties. These methods use measurements of effective electrical properties, such as magnetic permeability and electrical conductivity, to infer the state of the test material, such as the stress, temperature, or overload condition. The sensors, which 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. Magnetic field or eddy current based inductive and giant magnetoresistive sensors may be used on magnetizable and/or conducting materials, while capacitive sensors can be used for dielectric materials. Methods are also described for the use of state-sensitive layers to determine the state of materials of interest. These methods allow the weight of articles, such as aircraft, to be determined.

摘要翻译： 描述了用于监测应力和其他材料性质的方法。 这些方法使用诸如磁导率和电导率之类的有效电性能的测量来推断测试材料的状态，例如应力，温度或过载条件。 可以使用可以是单元件传感器或传感器阵列的传感器来周期性地检查安装到测试材料上的选定位置，或者在测试材料上扫描以产生材料性质的二维图像。 基于磁场或涡电流的感应和巨磁阻传感器可用于可磁化和/或导电材料，而电容传感器可用于介电材料。 还描述了使用状态敏感层来确定感兴趣的材料的状态的方法。 这些方法允许确定诸如飞机的物品的重量。

公开(公告)号：US07518360B2

公开(公告)日：2009-04-14

申请号：US11809555

申请日：2007-06-01

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Ian C. Shav ,  Mark D. Windoloski ,  Christopher Root ,  Vladimir A. Zilberstein ,  David C. Grundy ,  Vladimir Tsukernik

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Ian C. Shav ,  Mark D. Windoloski ,  Christopher Root ,  Vladimir A. Zilberstein ,  David C. Grundy ,  Vladimir Tsukernik

IPC分类号： G01N27/82 ,  G01R33/12

CPC分类号： G01N27/9046 ,  G01N27/82

摘要： Combined wound and micro-fabricated winding constructs are described for the inspection of materials and the detection and characterization of hidden features or flaws. These constructs can be configured as sensors or sensor arrays that are surface mounted or scanned over conducting and/or magnetizable test materials. The well-defined geometry obtained micro-fabricated windings and from carefully wound coils with known winding positions permits the use of model based inversions of sensed responses into material properties. In a preferred embodiment, the primary winding is a wound coil and the sense elements are etched or printed. The drive or sense windings can also be mounted under fasteners to improve sensitivity to hidden flaws. Ferrites and other means may be used to guide the magnetic flux and enhance the magnetic field in the test material.

摘要翻译： 描述了组合伤口和微制造的缠绕结构，用于材料的检查和隐藏特征或缺陷的检测和表征。 这些结构可以配置为在导电和/或可磁化测试材料上进行表面安装或扫描的传感器或传感器阵列。 精确定义的几何形状获得微制造的绕组和从已知缠绕位置的小心缠绕的线圈允许使用基于模型的感测响应的反演到材料特性中。 在优选实施例中，初级绕组是缠绕线圈，并且感测元件被蚀刻或印刷。 驱动或感测绕组也可以安装在紧固件下，以提高对隐藏缺陷的敏感性。 可以使用铁氧体等手段来引导磁通量并增强测试材料中的磁场。

公开(公告)号：US07451657B2

公开(公告)日：2008-11-18

申请号：US11036780

申请日：2005-01-14

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Vladimir A. Zilberstein ,  Andrew P. Washabaugh ,  Volker Weiss ,  Christopher A. Craven ,  Ian C. Shay ,  David C. Grundy ,  Karen E. Walrath ,  Robert J. Lyons

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Vladimir A. Zilberstein ,  Andrew P. Washabaugh ,  Volker Weiss ,  Christopher A. Craven ,  Ian C. Shay ,  David C. Grundy ,  Karen E. Walrath ,  Robert J. Lyons

IPC分类号： G01B5/30

CPC分类号： G01N27/9013

摘要： Methods are described for assessing material condition. These methods include the use of multiple source fields for interrogating and loading of a multicomponent test material. Source fields include electric, magnetic, thermal, and acoustic fields. The loading field preferentially changes the material properties of a component of the test material, which allows the properties of the component materials to be separated. Methods are also described for monitoring changes in material state using separate drive and sense electrodes with some of the electrodes positioned on a hidden or even embedded material surface. Statistical characterization of the material condition is performed with sensor arrays that provide multiple responses for the material condition during loading. The responses can be combined into a statistical population that permits tracking with respect to loading history. Methods are also described for measuring the stress in the material by independently estimating effective electrical properties, such as magnetic permeability or electrical conductivity, using layered models or predetermined spatial distributions with depth that are then correlated with the stress.

摘要翻译： 描述了评估材料状况的方法。 这些方法包括使用多个源字段来询问和加载多组分测试材料。 源场包括电，磁，热和声场。 加载场优先改变测试材料的组分的材料性质，这允许分离组分材料的性质。 还描述了用于使用单独的驱动和感测电极来监测材料状态的变化的方法，其中一些电极位于隐藏的或甚至嵌入的材料表面上。 使用传感器阵列进行材料状态的统计表征，这些传感器阵列在加载期间为材料状态提供多个响应。 响应可以组合成允许跟踪加载历史的统计数据。 还描述了通过使用分层模型或具有深度的预定空间分布独立地估计有效电特性（例如磁导率或导电性）来测量材料中的应力的方法，然后与应力相关联。

公开(公告)号：US07451639B2

公开(公告)日：2008-11-18

申请号：US11715288

申请日：2007-03-07

申请人： Neil J Goldfine ,  Mark D Windoloski ,  Vladimir B Tsukernik ,  Darrell E Schlicker ,  Todd M Dunford ,  Andrew P. Washabaugh

发明人： Neil J Goldfine ,  Mark D Windoloski ,  Vladimir B Tsukernik ,  Darrell E Schlicker ,  Todd M Dunford ,  Andrew P. Washabaugh

IPC分类号： G01M15/00

CPC分类号： G01B7/285

摘要： A set of curved components, such as the dovetail region of engine blades, are inspected by mounting each component into a circular carousel in a vertical orientation and rotating the carousel to move each component toward and away from an inspection site. The inspection site clamps a flexible eddy current sensor array to the curved material surface, scans the array over the surface, records the sensor position. A rigid element having a surface geometry similar to the surface shape of the component can be attached to the component to facilitate scanning of the sensor array over a component edge. The response of each sense element in the array may be converted into an effective material property and sense element proximity to the component material surface to verify the quality of the inspection scan and the presence of a defect such as a crack.

摘要翻译： 通过将垂直方向上的每个部件安装到圆形转盘中并旋转圆盘传送带以使每个部件朝向和离开检查部位移动，来检查一组弯曲部件，例如发动机叶片的燕尾形区域。 检查部位将柔性涡流传感器阵列夹在弯曲的材料表面，扫描阵列在表面上，记录传感器的位置。 具有类似于部件的表面形状的表面几何形状的刚性元件可以附接到部件上以便于在部件边缘上扫描传感器阵列。 阵列中的每个感测元件的响应可以被转换成有效的材料性质和感测元件接近组件材料表面以验证检查扫描的质量和存在诸如裂纹的缺陷。

公开(公告)号：US20080258720A1

公开(公告)日：2008-10-23

申请号：US11809555

申请日：2007-06-01

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Ian C. Shav ,  Mark D. Windoloski ,  Christopher Root ,  Vladimir A. Zilberstein ,  David C. Grundy ,  Vladimir Tsukernik

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Ian C. Shav ,  Mark D. Windoloski ,  Christopher Root ,  Vladimir A. Zilberstein ,  David C. Grundy ,  Vladimir Tsukernik

IPC分类号： G01N27/82

CPC分类号： G01N27/9046 ,  G01N27/82

摘要： Combined wound and micro-fabricated winding constructs are described for the inspection of materials and the detection and characterization of hidden features or flaws. These constructs can be configured as sensors or sensor arrays that are surface mounted or scanned over conducting and/or magnetizable test materials. The well-defined geometry obtained micro-fabricated windings and from carefully wound coils with known winding positions permits the use of model based inversions of sensed responses into material properties. In a preferred embodiment, the primary winding is a wound coil and the sense elements are etched or printed. The drive or sense windings can also be mounted under fasteners to improve sensitivity to hidden flaws. Ferrites and other means may be used to guide the magnetic flux and enhance the magnetic field in the test material.

摘要翻译： 描述了组合伤口和微制造的缠绕结构，用于材料的检查和隐藏特征或缺陷的检测和表征。 这些结构可以配置为在导电和/或可磁化测试材料上进行表面安装或扫描的传感器或传感器阵列。 精确定义的几何形状获得微制造的绕组和从已知缠绕位置的小心缠绕的线圈允许使用基于模型的感测响应的反演到材料特性中。 在优选实施例中，初级绕组是缠绕线圈，并且感测元件被蚀刻或印刷。 驱动或感测绕组也可以安装在紧固件下，以提高对隐藏缺陷的敏感性。 可以使用铁氧体等手段来引导磁通量并增强测试材料中的磁场。

公开(公告)号：US07280940B2

公开(公告)日：2007-10-09

申请号：US11371315

申请日：2006-03-07

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Yanko K Sheiretov ,  Andrew P. Washabaugh ,  David C. Grundy ,  Vladimir A. Zilberstein

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Yanko K Sheiretov ,  Andrew P. Washabaugh ,  David C. Grundy ,  Vladimir A. Zilberstein

IPC分类号： G06F15/00

CPC分类号： G01N22/00

摘要： The condition of insulating and semiconducting dielectric materials is assessed by a sensor array that uses electric fields to interrogate the test material. The sensor has a linear array of parallel drive conductors interconnected to form a single drive electrode and sense conductors placed on each side of and parallel to a drive conductor. Subsets of the sense conductors are interconnected to form at least two sense elements sensitive to different material regions. The sense conductors may be at different distances to the drive conductors, enabling measurement sensitivity to different depths into the test material. The material condition is assessed directly from the sense element responses or after conversion to an effective material property, such as an electrical conductivity or dielectric permittivity.

摘要翻译： 绝缘和半导体介电材料的条件通过使用电场询问测试材料的传感器阵列来评估。 传感器具有互连以形成单个驱动电极的线性阵列和放置在驱动导体的平行于驱动导体的每一侧上的感测导体。 感测导体的子集互连以形成对不同材料区域敏感的至少两个感测元件。 感测导体可以距离驱动导体不同的距离，使测量灵敏度不同于测试材料的深度。 材料条件直接由感应元件响应或转换为有效材料性质（如导电率或介电常数）进行评估。

公开(公告)号：US07161350B2

公开(公告)日：2007-01-09

申请号：US10633905

申请日：2003-08-04

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  David C. Clark ,  Karen E. Walrath ,  Volker Weiss ,  William M. Chepolis ,  Andrew P. Washabaugh ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  David C. Clark ,  Karen E. Walrath ,  Volker Weiss ,  William M. Chepolis ,  Andrew P. Washabaugh ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

IPC分类号： G01N27/90 ,  G01N27/82

CPC分类号： G01N27/72 ,  G01B7/24 ,  G01B7/34 ,  G01N27/902 ,  G01R33/12

摘要： Material condition monitoring may be performed by electromagnetic sensors and sensor arrays mounted to the material surface. The sensors typically have a periodic winding or electrode structure that creates a periodic sensing field when driven by an electrical signal. The sensors can be thin and flexible so that they conform to the surface of the test material. They can also be mounted such that they do not significantly modify the environmental exposure conditions for the test material, such as by creating stand-off gaps between the sensor and material surface or by perforating the sensor substrate.

摘要翻译： 材料状态监测可以由安装在材料表面的电磁传感器和传感器阵列执行。 传感器通常具有周期性的绕组或电极结构，其在由电信号驱动时产生周期性感测场。 这些传感器可以是薄而灵活的，以使它们符合测试材料的表面。 它们也可以被安装成使得它们不会显着地改变测试材料的环境暴露条件，例如通过在传感器和材料表面之间产生隔离间隙或通过穿孔传感器基板。

公开(公告)号：US07049811B2

公开(公告)日：2006-05-23

申请号：US10876002

申请日：2004-06-23

申请人： Darrell E. Schlicker ,  Neil J. Goldfine ,  Andrew P. Washabaugh ,  Karen E. Walrath ,  Ian C. Shay ,  David C. Grundy ,  Mark Windoloski

发明人： Darrell E. Schlicker ,  Neil J. Goldfine ,  Andrew P. Washabaugh ,  Karen E. Walrath ,  Ian C. Shay ,  David C. Grundy ,  Mark Windoloski

IPC分类号： G01N27/72 ,  G01N27/82 ,  G01R33/12

CPC分类号： G01N27/9033 ,  G01N27/82 ,  G01N27/902 ,  G01N27/904

摘要： A test circuit having a drive winding with parallel conducting segments and a plurality of sense elements used for the nondestructive measurement of materials. The drive winding segments have extended portions and are driven by a time varying electric current to impose a magnetic field in the test material. Sense elements are distributed in a direction parallel to the extended portions of these drive segments, with separate connections provided to each sense element. A second plurality of sense elements may also be distributed parallel to the extended portions of the drive windings, being either aligned or offset from a first plurality of sense elements.

摘要翻译： 一种测试电路，具有具有平行导电段的驱动绕组和用于材料的非破坏性测量的多个感测元件。 驱动绕组段具有延伸部分并且由时变电流驱动以在测试材料中施加磁场。 感测元件沿平行于这些驱动段的延伸部分的方向分布，其中单独的连接提供给每个感测元件。 第二组多个感测元件也可以平行于驱动绕组的延伸部分分布，与第一多个感测元件对准或偏移。

公开(公告)号：US06952095B1

公开(公告)日：2005-10-04

申请号：US09666524

申请日：2000-09-20

申请人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

发明人： Neil J. Goldfine ,  Darrell E. Schlicker ,  Andrew P. Washabaugh ,  Vladimir A. Zilberstein ,  Vladimir Tsukernik

IPC分类号： G01B7/24 ,  G01B7/34 ,  G01N27/90 ,  G01R33/12 ,  G01N27/82 ,  G01N27/72

CPC分类号： G01N27/72 ,  G01B7/24 ,  G01B7/34 ,  G01N27/90 ,  G01N27/902 ,  G01R33/12

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。