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11. 发明申请

US20060244443A1 Material condition assessment with eddy current sensors 审中-公开
标题翻译：用涡流传感器进行材料状态评估
公开(公告)号：US20060244443A1
公开(公告)日：2006-11-02
申请号：US11343741
申请日：2006-01-30
申请人： Neil Goldfine , Andrew Washabaugh , Yanko Sheiretov , Darrell Schlicker , Robert Lyons , Mark Windoloski , Christopher Craven , Vladimir Tsukernik , David Grundy
发明人： Neil Goldfine , Andrew Washabaugh , Yanko Sheiretov , Darrell Schlicker , Robert Lyons , Mark Windoloski , Christopher Craven , Vladimir Tsukernik , David Grundy
IPC分类号： G01N27/72
CPC分类号： G01N27/9046
摘要： Eddy current sensors and sensor arrays are used for process quality and material condition assessment of conducting materials. In an embodiment, changes in spatially registered high resolution images taken before and after cold work processing reflect the quality of the process, such as intensity and coverage. These images also permit the suppression or removal of local outlier variations. Anisotropy in a material property, such as magnetic permeability or electrical conductivity, can be intentionally introduced and used to assess material condition resulting from an operation, such as a cold work or heat treatment. The anisotropy is determined by sensors that provide directional property measurements. The sensor directionality arises from constructs that use a linear conducting drive segment to impose the magnetic field in a test material. Maintaining the orientation of this drive segment, and associated sense elements, relative to a material edge provides enhanced sensitivity for crack detection at edges.
摘要翻译：涡流传感器和传感器阵列用于导电材料的工艺质量和材料状况评估。在一个实施例中，在冷加工处理之前和之后拍摄的空间注册的高分辨率图像的变化反映了过程的质量，例如强度和覆盖。这些图像还允许抑制或去除局部异常值变化。可以有意地引入材料性质的各向异性，例如磁导率或电导率，以用于评估由诸如冷加工或热处理的操作引起的材料状况。各向异性由提供定向性质测量的传感器确定。传感器方向性来自使用线性传导驱动段将磁场施加在测试材料中的结构。维持该驱动段和相关感测元件相对于材料边缘的方向为边缘处的裂纹检测提供了增强的灵敏度。

12. 发明申请

US20070069720A1 Material characterization with model based sensors 审中-公开
公开(公告)号：US20070069720A1
公开(公告)日：2007-03-29
申请号：US11229844
申请日：2005-09-19
申请人： Neil Goldfine , Mark Windoloski , David Grundy , Yanko Sheiretov , Darrell Schlicker , Andrew Washabaugh
发明人： Neil Goldfine , Mark Windoloski , David Grundy , Yanko Sheiretov , Darrell Schlicker , Andrew Washabaugh
IPC分类号： G01N27/82
CPC分类号： G01N27/72
摘要： Nondestructive material condition monitoring and assessment is accomplished by placing, mounting, or scanning magnetic and electric field sensors and sensor arrays over material surfaces. The material condition can be inferred directly from material property estimates, such as the magnetic permeability, dielectric permittivity, electrical property, or thickness, or from a correlation with these properties. Hidden cracks in multiple layer structures in the presence of fasteners are detected by combining multiple frequency magnetic field measurements and comparing the result to characteristic signature responses. The threshold value for indicating a crack is adjusted based on a high frequency measurement that accounts for fastener type. The condition of engine disk slot is determined without removal of the disk from the engine by placing near the disk a fixture that contains a sensor for scanning through the slot and means for recording position within the slot. Inflatable support structures can be placed behind the sensor to improve and a guide can be used to align sensor with the slot and for rotating the disk. The condition of an interface between a conducting substrate and a coating is assessed by placing a magnetic field sensor on the opposite side of the substrate from the coating and monitoring at least one model parameter for the material system, with the model parameter correlated to the interfacial condition. The model parameter is typically a magnetic permeability that reflects the residual stress at the interface. Sensors embedded between material layers are protected from damage by placing shims on the faying surface. After determining the areas to be monitored and the areas likely to cause sensor damage, a shim thickness is determined and is then placed in at least one area not being monitored by a sensor. The condition of a test fluid is assessed through a dielectric sensor containing a contaminant-sensitive material layer. The properties of the layer are monitored with the dielectric sensor and correlated to contaminant level.

13. 发明申请

US20060097718A1 Local feature characterization using quasistatic electromagnetic sensors 有权
标题翻译：使用准静态电磁传感器的局部特征表征
公开(公告)号：US20060097718A1
公开(公告)日：2006-05-11
申请号：US11249047
申请日：2005-10-11
申请人： Darrell Schlicker , Neil Goldfine , Andrew Washabaugh , Yanko Sheiretov , Mark Windoloski
发明人： Darrell Schlicker , Neil Goldfine , Andrew Washabaugh , Yanko Sheiretov , Mark Windoloski
IPC分类号： G01R33/12
CPC分类号： G01N27/023
摘要： Local features such as cracks in materials are nondestructively characterized by measuring a response with an electromagnetic sensor and converting this response into a selected property using a database. The database is generated prior to data acquisition by using a model to generate a baseline response or field distribution for the sensor and combining these results with another model, which may be simpler than the first model or provide a local representation of the field perturbations around a feature, which is evaluated multiple times over a range of values of the selected property. In addition, the presence of a feature may be detected by converting the sensor response into a reference parameter, such as a lift-off factor that reflects the sensor position relative to a material edge, and using this parameter to determine a reference response that can be compared to the measured response.
摘要翻译：局部特征如材料中的裂纹是非破坏性的，其特征在于通过用电磁传感器测量响应并使用数据库将该响应转换成选定的属性。在数据采集之前通过使用模型生成数据库以生成传感器的基线响应或场分布，并将这些结果与另一模型相结合，该模型可以比第一模型更简单，或者提供周围的场扰动的局部表示功能，在所选属性的值范围内多次评估。此外，可以通过将传感器响应转换为参考参数来检测特征的存在，所述参考参数例如反映相对于材料边缘的传感器位置的剥离因子，并且使用该参数来确定可以与测量响应进行比较。

14. 发明申请

US20050007106A1 Hybrid wound/etched winding constructs for scanning and monitoring 审中-公开
标题翻译：用于扫描和监测的混合伤口/蚀刻绕组结构
公开(公告)号：US20050007106A1
公开(公告)日：2005-01-13
申请号：US10853009
申请日：2004-05-24
申请人： Neil Goldfine , Darrell Schlicker , Andrew Washabaugh , Ian Shay , Mark Windoloski , Christopher Root , Vladimir Zilberstein , David Grundy , Vladimir Tsukernik
发明人： Neil Goldfine , Darrell Schlicker , Andrew Washabaugh , Ian Shay , Mark Windoloski , Christopher Root , Vladimir Zilberstein , David Grundy , Vladimir Tsukernik
IPC分类号： G01N27/82 , G01N27/90 , G01N27/72
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。

15. 发明申请

US20070120561A1 Method for material property monitoring with perforated, surface mounted sensors 有权
公开(公告)号：US20070120561A1
公开(公告)日：2007-05-31
申请号：US11522628
申请日：2006-09-18
申请人： Neil Goldfine , Darrell Schlicker , Karen Walrath , Andrew Washabaugh , Vladimir Zilberstein , Vladimir Tsukernik
发明人： Neil Goldfine , Darrell Schlicker , Karen Walrath , Andrew Washabaugh , Vladimir Zilberstein , Vladimir Tsukernik
IPC分类号： 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.

16. 发明申请

US20070114993A1 Magnetic field characterization of stresses and properties in materials 审中-公开
标题翻译：材料应力和性能的磁场表征
公开(公告)号：US20070114993A1
公开(公告)日：2007-05-24
申请号：US11292146
申请日：2005-11-30
申请人： Neil Goldfine , Ian Shay , Darrell Schlicker , Andrew Washabaugh , David Grundy , Robert Lyons , Vladimir Zilberstein , Vladimir Tsukernik
发明人： Neil Goldfine , Ian Shay , Darrell Schlicker , Andrew Washabaugh , David Grundy , Robert Lyons , Vladimir Zilberstein , Vladimir Tsukernik
IPC分类号： G01R33/12
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特性的二维图像。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。

17. 发明申请

US20050127908A1 Absolute property measurements using electromagnetic sensors 有权
标题翻译：使用电磁传感器的绝对属性测量
公开(公告)号：US20050127908A1
公开(公告)日：2005-06-16
申请号：US10963482
申请日：2004-10-12
申请人： Darrell Schlicker , Neil Goldfine , David Grundy , Robert Lyons , Vladimir Zilberstein , Andrew Washabaugh , Vladimir Tsukernik , Mark Windoloski , Ian Shay
发明人： Darrell Schlicker , Neil Goldfine , David Grundy , Robert Lyons , Vladimir Zilberstein , Andrew Washabaugh , Vladimir Tsukernik , Mark Windoloski , Ian Shay
IPC分类号： G01N27/02 , G01N27/82
CPC分类号： G01N27/023 , G01N27/9046
摘要： Methods and apparatus are described for absolute electrical property measurement of materials. This is accomplished with magnetic and electric field based sensors and sensor array geometries that can be modeled accurately and with impedance instrumentation that permits accurate measurements of the in-phase and quadrature phase signal components. A dithering calibration method is also described which allows the measurement to account for background material noise variations. Methods are also described for accounting for noise factors in sensor design and selection of the optimal operating conditions which can minimize the error bounds for material property estimates. Example application of these methods to automated engine disk slot inspection and assessment of the mechanical condition of dielectric materials are presented.
摘要翻译：对材料的绝对电气性能测量方法和设备进行了描述。这是通过基于磁场和电场的传感器和传感器阵列几何形状来实现的，其可以被精确地建模并且具有允许精确测量同相和正交相位信号分量的阻抗测量。还描述了抖动校准方法，其允许测量考虑背景材料噪声变化。还描述了用于考虑传感器设计中的噪声因子和选择可以最小化材料性能估计的误差界限的最佳操作条件的方法。介绍了将这些方法应用于自动化引擎盘槽检查和评估介电材料的机械状态。

18. 发明申请

US20050088172A1 Hidden feature characterization using eddy current sensors and arrays 有权
标题翻译：使用涡流传感器和阵列的隐藏特征表征
公开(公告)号：US20050088172A1
公开(公告)日：2005-04-28
申请号：US10934103
申请日：2004-09-03
申请人： Neil Goldfine , Vladimir Zilberstein , Darrell Schlicker , David Grundy , Ian Shay , Robert Lyons , Andrew Washabaugh
发明人： Neil Goldfine , Vladimir Zilberstein , Darrell Schlicker , David Grundy , Ian Shay , Robert Lyons , Andrew Washabaugh
IPC分类号： G01N27/90 , G01N27/72
CPC分类号： G01N27/9046
摘要： Quasistatic sensor responses may be converted into multiple model parameters to characterize hidden properties of a material. Methods of conversion use databases of responses and, in some cases, databases that include derivatives of the responses, to estimate at least three unknown model parameters, such as the electrical conductivity, magnetic permeability, dielectric permittivity, thermal conductivity, and/or layer thickness. These parameter responses are then used to obtain a quantitative estimate of a property of a hidden feature, such as corrosion loss layer thicknesses, inclusion size and depth, or stress variation. The sensors can be single element sensors or sensor arrays and impose an interrogation electric, magnetic, or thermal field.
摘要翻译：准静态传感器响应可以转换成多个模型参数来表征材料的隐藏属性。转换方法使用响应数据库，在某些情况下，包括响应的衍生物的数据库，估计至少三个未知模型参数，如电导率，磁导率，介电常数，导热系数和/或层厚度。然后使用这些参数响应来获得隐藏特征的性质的定量估计，例如腐蚀损失层厚度，夹杂物尺寸和深度或应力变化。这些传感器可以是单元件传感器或传感器阵列，并且会产生询问电磁场或热场。

19. 发明申请

US20050083050A1 Fluid supports for sensors 审中-公开
标题翻译：用于传感器的流体支架
公开(公告)号：US20050083050A1
公开(公告)日：2005-04-21
申请号：US10935037
申请日：2004-09-07
申请人： Vladimir Tsukernik , Neil Goldfine , Andrew Washabaugh , Darrell Schlicker , Karen Walrath , Eric Hill , Vladimir Zilberstein
发明人： Vladimir Tsukernik , Neil Goldfine , Andrew Washabaugh , Darrell Schlicker , Karen Walrath , Eric Hill , Vladimir Zilberstein
IPC分类号： G01N27/82 , G01M17/02
CPC分类号： G01N27/82
摘要： Pressurized elastic support structures or balloons are used to press flexible sensors against the surface a material under test. Rigid support elements can also be incorporated into the inspection devices to maintain the basic shape of the inspection structure and to facilitate positioning of the sensors near the test material surface. The rigid supports can have the approximate shape of the test material surface or the pressurization of one or more balloons can be used to conform the sensor to the shape of the test material surface.
摘要翻译：使用加压的弹性支撑结构或气球将柔性传感器压在表面上，以测试被测材料。也可以将刚性支撑元件结合到检查装置中，以维持检查结构的基本形状并且便于传感器在测试材料表面附近的定位。刚性支撑件可以具有测试材料表面的近似形状，或者可以使用一个或多个气囊的加压使传感器与测试材料表面的形状相一致。

20. 发明申请

US20050017713A1 Weld characterization using eddy current sensors and arrays 审中-公开
标题翻译：使用涡流传感器和阵列进行焊接表征
公开(公告)号：US20050017713A1
公开(公告)日：2005-01-27
申请号：US10864297
申请日：2004-06-09
申请人： Neil Goldfine , David Grundy , Vladimir Zilberstein , Mark Windoloski , Darrell Schlicker , Andrew Washabaugh
发明人： Neil Goldfine , David Grundy , Vladimir Zilberstein , Mark Windoloski , Darrell Schlicker , Andrew Washabaugh
IPC分类号： B23K20/12 , B23K31/12 , G01N27/90 , G01N27/82
CPC分类号： B23K20/123 , B23K20/122 , B23K31/125 , G01N27/90
摘要： Eddy current sensors and sensor arrays are used to characterize welds and the welding process schedule or parameters. A sensor or sensor array is placed in proximity to the test material, such as a lap joint or a butt weld, and translated over the weld region. Effective properties associated with the test material and sensor, such as an electrical conductivity or lift-off, are obtained for the weld region and the base material at a distant location from the weld region. The effective properties or features obtained from the effective property variation with position across the weld are used to assess the welding process parameters.
摘要翻译：涡流传感器和传感器阵列用于表征焊缝和焊接过程进度表或参数。传感器或传感器阵列放置在测试材料附近，例如搭接接头或对接焊缝，并在焊接区域上翻译。对于焊接区域和基材在与焊接区域相距较远的位置，获得与测试材料和传感器相关的有效特性，例如导电性或剥离性。使用从穿过焊缝的位置的有效性质变化获得的有效性质或特征来评估焊接工艺参数。

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