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1. 发明授权

US5463201A Seam-tracking apparatus for a welding system employing an array of eddy current elements 失效
标题翻译：一种采用涡流元件阵列的焊接系统的接缝跟踪装置
公开(公告)号：US5463201A
公开(公告)日：1995-10-31
申请号：US13601
申请日：1993-02-04
申请人： Kristina H. V. Hedengren , Kenneth B. Haefner
发明人： Kristina H. V. Hedengren , Kenneth B. Haefner
IPC分类号： B23K15/00 , B23K26/04 , B23Q35/127 , B23K26/00 , G01N27/90
CPC分类号： B23Q35/127 , B23K15/0013 , B23K26/04 , B23K26/044
摘要： A seam-tracking apparatus for a welding system has a welding arm which directs an energy beam toward a seam. The seam-tracking apparatus includes an eddy current sensor formed by an array of eddy current elements, each producing a respective electrical signal when positioned adjacent to the seam to be tracked. An eddy current signal processor receives each respective electrical signal so as to generate position data indicative of the location of the seam. A controller is responsive to the position data so as to align the eddy current sensor and the welding arm over the seam so that the energy beam continuously impinges on the seam, as the welding arm advances along the seam. The eddy current sensor may be flexible, in which case the seam-tracking apparatus can track a seam between workpieces having curved surfaces.
摘要翻译：用于焊接系统的焊缝跟踪装置具有将能量束引向接缝的焊接臂。焊缝跟踪装置包括由涡流元件阵列形成的涡流传感器，每个涡流电流传感器在邻近待跟踪的接缝定位时产生相应的电信号。涡流信号处理器接收每个相应的电信号，以产生指示接缝位置的位置数据。控制器响应于位置数据，以便使涡流传感器和焊接臂在接缝上对准，使得当焊接臂沿着接缝前进时，能量束连续地撞击接缝。涡流传感器可以是柔性的，在这种情况下，焊缝跟踪装置可以跟踪具有弯曲表面的工件之间的接缝。

2. 发明授权

US5315234A Eddy current device for inspecting a component having a flexible support with a plural sensor array 失效
标题翻译：用于检查具有多个传感器阵列的具有柔性支撑件的部件的涡流装置
公开(公告)号：US5315234A
公开(公告)日：1994-05-24
申请号：US862950
申请日：1992-04-03
申请人： George H. Sutton, Jr. , Francis H. Little , Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf , Donna C. Hurley
发明人： George H. Sutton, Jr. , Francis H. Little , Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf , Donna C. Hurley
IPC分类号： G01N27/90 , G01N27/82 , G01R33/12 , H01F21/02
CPC分类号： G01N27/902 , G01N27/904
摘要： An eddy current device for inspecting a component includes an eddy current array circuit having respective pluralities of drive and sense elements and having an active face for positioning on a surface of the component during the inspection operation. A backing is disposed on a face of the eddy current array circuit opposite to the active face for concentrating an electromagnetic flux from the eddy current array circuit into the component when each of the plurality of drive elements is being energized. A mechanical arrangement is provided for supporting and deploying the backing and the array circuit to substantially conform with the surface portion under inspection and to cause each of the pluralities of drive and sense elements to be maintained at their respective substantially constant distances from the inspection surface during scanning, preferably at a controlled rate of scan.
摘要翻译：用于检查部件的涡流装置包括具有相应多个驱动和感测元件的涡流阵列电路，并且在检查操作期间具有用于定位在部件的表面上的主动面。背衬设置在与有源面相对的涡流阵列电路的表面上，用于当多个驱动元件中的每一个被通电时，将来自涡流阵列电路的电磁通量集中到部件中。提供了用于支撑和展开背衬和阵列电路以基本上与被检查的表面部分一致的机械装置，并且使多个驱动和感测元件中的每一个在检测表面期间保持在它们各自基本恒定的距离优选以受控的扫描速率进行扫描。

3. 发明授权

US5278884A Complete 3D CT data acquisition using practical scanning paths on the surface of a sphere 失效
标题翻译：使用球体表面上的实际扫描路径完成3D CT数据采集
公开(公告)号：US5278884A
公开(公告)日：1994-01-11
申请号：US992672
申请日：1992-12-18
申请人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
发明人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
IPC分类号： A61B6/03 , A61B6/00 , G06F15/42
CPC分类号： A61B6/4447 , A61B6/027 , A61B6/032 , Y10S378/901
摘要： Complete CT data acquisition is provided by scanning path trajectories located on a sphere or approximately located on a sphere. The scanning path trajectories are at least bounded between two relatively close spheres. The various scanning paths include sinusoids, square waves, circles, and arcs.
摘要翻译：通过扫描位于球体上或大致位于球体上的路径轨迹来提供完整的CT数据采集。扫描路径轨迹至少在两个相对接近的球体之间界定。各种扫描路径包括正弦波，方波，圆和弧。

4. 发明授权

US5371461A Apparatus and method for compensating for variations in the lift-off of eddy current surface inspection array elements 失效
标题翻译：用于补偿涡流表面检查阵列元件的剥离变化的装置和方法
公开(公告)号：US5371461A
公开(公告)日：1994-12-06
申请号：US32369
申请日：1993-03-17
申请人： Kristina H. V. Hedengren
发明人： Kristina H. V. Hedengren
IPC分类号： G01N27/90 , G01R33/12
CPC分类号： G01N27/9053 , G01R33/12
摘要： An improved eddy current probe array having means to compensate the entire array for varying different element liftoff, is described. An array consisting of a plurality of sense elements and means for compensating these sense elements is scanned across an inspection surface to produce respective scan responsive signals wherein the scan responsive signals of the sense elements are proportionately normalized or calibrated against the scan response of said compensating means during routine signal processing of the array signals in order to compensate for any lift off experienced by the sense elements. Array lift off compensation is attributable to sense element design cooperating with at least one lift off compensating sense element and a method of normalization/calibration performed during signal processing of the array signals.
摘要翻译：描述了具有用于补偿整个阵列以改变不同元件提升的装置的改进的涡流探针阵列。由多个感测元件组成的阵列和用于补偿这些感测元件的装置在检查表面上扫描以产生相应的扫描响应信号，其中感测元件的扫描响应信号相对于所述补偿装置的扫描响应成比例地归一化或校准在阵列信号的例行信号处理期间，以补偿由感测元件所经历的任何剥离。阵列剥离补偿归因于与至少一个提升补偿感测元件协作的感应元件设计以及在阵列信号的信号处理期间执行的归一化/校准的方法。

5. 发明授权

US5237271A Apparatus and method for non-destructive testing using multi-frequency eddy currents 失效
标题翻译：使用多频涡流的非破坏性测试的装置和方法
公开(公告)号：US5237271A
公开(公告)日：1993-08-17
申请号：US696457
申请日：1991-05-06
申请人： Kristina H. V. Hedengren
发明人： Kristina H. V. Hedengren
IPC分类号： G01N27/90
CPC分类号： G01N27/902 , G01N27/9046
摘要： A method for improving eddy current flaw detection by simultaneously exciting a select plurality of eddy current probe elements with a multiplicity of select frequencies in a simultaneous parallel or serial manner to form a corresponding multiplicity of direct and/or differential images which can be processed together for improved eddy current image resolution. Select eddy current probe elements when driven at select multiple frequencies further provide a capability for simultaneous flaw detection and characterization by dual resolution scanning. Dual flaw resolution is accomplished by first locating a flaw using low resolution frequencies; and thereupon, switching to higher resolution frequencies to characterize the flaw.
摘要翻译：一种用于通过同时以多个选择频率以同时并行或串联的方式同时激励选择的多个涡流探针元件以形成可以一起处理的相应多个直接和/或差分图像来改善涡流探伤的方法，改进的涡流图像分辨率。当选择多个频率驱动时，选择涡流探头元件进一步提供了通过双分辨率扫描进行同时探伤和表征的能力。通过首先使用低分辨率频率定位缺陷来实现双重缺陷分辨率; 然后切换到更高分辨率的频率来表征缺陷。

6. 发明授权

US5006800A Eddy current imaging apparatus and method using phase difference detection 失效
标题翻译：涡流成像装置及方法采用相位差检测
公开(公告)号：US5006800A
公开(公告)日：1991-04-09
申请号：US431791
申请日：1989-11-06
申请人： Kristina H. V. Hedengren , Donna C. Hurley , John D. Young
发明人： Kristina H. V. Hedengren , Donna C. Hurley , John D. Young
IPC分类号： G01N27/82 , G01N27/90
CPC分类号： G01N27/9046 , G01N27/82
摘要： A phase-difference eddy current imaging system has a bridge circuit including a pair of coils with one or both coils disposed proximate an object that may contain one or more flaws. An oscillator is coupled to the bridge circuit and also to a pair of phase detectors that are coupled to the coils. A differential amplifier is coupled to the phase detectors for providing a comparison signal. A method for eddy current imaging using phase difference detection comprises providing relative movement between an object and at least one of a pair of coils, measuring the phase of the effective reactance in each of the coils, comparing the measured values, and formatting the compared values as a function of spatial position.
摘要翻译：相位差涡流成像系统具有桥接电路，其包括一对线圈，其中一个或两个线圈设置在可能包含一个或多个缺陷的物体附近。振荡器耦合到桥式电路，并且耦合到耦合到线圈的一对相位检测器。差分放大器耦合到相位检测器以提供比较信号。使用相位差检测的涡流成像方法包括提供物体与一对线圈中的至少一个线圈之间的相对运动，测量每个线圈中的有效电抗的相位，比较测量值和格式化比较值作为空间位置的函数。

7. 发明授权

US5903147A Eddy current array inspection device for shaped holes 失效
标题翻译：涡流电流阵列检查装置用于成形孔
公开(公告)号：US5903147A
公开(公告)日：1999-05-11
申请号：US819833
申请日：1997-03-18
申请人： Carl Granger, Jr. , Francis H. Little , Thomas B. Hewton , Kristina H. V. Hedengren
发明人： Carl Granger, Jr. , Francis H. Little , Thomas B. Hewton , Kristina H. V. Hedengren
IPC分类号： G01N27/90 , G01N27/72 , G01N27/82 , G01R33/12
CPC分类号： G01N27/9013
摘要： An eddy current device for inspecting a component, such as a closed surface area of a gas turbine engine or the like, includes an eddy current array circuit having an active face for positioning on a surface portion of the component during an inspection operation and backing on a surface of the eddy current array circuit opposite to the active face. The eddy current array circuit and backing are disposed over the operating face and expandable sides of an extendible pin. The extendible pin has a slot formed therein with interior side edges which narrow toward the operating face of the pin at a predetermined slope. The expanding pin is positioned to cause the angled sides to mate while engaging the interior angled sides of the round or shaped hole to cause the exterior sides of the expandable pin to expand outwardly a greater distance as the pin is pushed deeper into the hole. This causes the eddy current circuit to conform with the shape of the surface to be inspected. The array sensor is so shaped that it can cover the closed surface in as little as one scan.
摘要翻译：用于检查诸如燃气涡轮发动机等的封闭表面积的部件的涡流装置包括涡流阵列电路，其具有用于在检查操作期间定位在部件的表面部分上的主动面，并且支撑涡流阵列电路的表面与主动面相对。涡流阵列电路和背衬设置在可伸缩销的操作面和可膨胀侧上。可延伸销具有形成在其中的槽，其内侧边缘以预定斜率朝向销的操作面变窄。定位膨胀销使得成角度的侧面在与圆形或成形孔的内部成角度的侧面配合，以使得当销被更深地推入孔中时，可膨胀销的外侧向外扩展更大的距离。这使得涡流电路符合要检查的表面的形状。阵列传感器的形状使其能够在少至一次的扫描中覆盖封闭的表面。

8. 发明授权

US5611026A Combining a priori data with partial scan data to project three dimensional imaging of arbitrary objects with computerized tomography 失效
标题翻译：将先验数据与部分扫描数据相结合，用计算机断层扫描技术投影任意物体的三维成像
公开(公告)号：US5611026A
公开(公告)日：1997-03-11
申请号：US500387
申请日：1995-07-10
申请人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
发明人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： G06T11/006 , A61B6/032 , A61B6/027
摘要： The present invention discloses a method and a system for supplementing and completing 3D CT data generated from an incomplete scanning path. If a detector is large enough to scan the object, additional data is acquired from adjacent scanning paths and combined directly with the original projection data set in order to form an exact and complete data set called the combined data set. If the object to be scanned is larger than the detector, additional data from adjacent scanning paths is acquired and reconstructed into an approximate image of the adjacent region from which appropriate projection data from the region of interest is calculated to form an exact and complete data set. In either case, a priori information about the object may be used to calculate missing projection information.
摘要翻译：本发明公开了一种用于补充和完成从不完整扫描路径生成的3D CT数据的方法和系统。如果检测器足够大以扫描对象，则从相邻的扫描路径获取附加数据并直接与原始投影数据集组合，以形成称为组合数据集的精确和完整的数据集。如果要扫描的物体大于检测器，则获取来自相邻扫描路径的附加数据并将其重建为邻近区域的近似图像，从该区域计算来自感兴趣区域的适当投影数据以形成精确和完整的数据集。在任一种情况下，可以使用关于对象的先验信息来计算丢失的投影信息。

9. 发明授权

US5420429A Multilayer transducer array 失效
标题翻译：多层换能器阵列
公开(公告)号：US5420429A
公开(公告)日：1995-05-30
申请号：US133354
申请日：1993-10-08
申请人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
发明人： Jeffrey W. Eberhard , Kristina H. V. Hedengren
IPC分类号： B06B1/06 , G01T1/20
CPC分类号： G01T1/2018 , B06B1/064
摘要： Transducer arrays are constructed using multiple layers of transducer elements, each layer of transducer elements having energy passages such as spaces to allow free passage of energy to or from transducer elements in another layer. Each transducing element performs the same transducing (energy conversion) as the other transducing elements. The transducer arrays may be detector arrays having scintillation materials for detection of x-ray or other high energy rays with each element operable to detect the same type of energy (e.g., x-ray, gamma ray, ultrasound, etc.) as the other elements. Multiple layering of the detector elements allows construction of a diced or mosaic detector array without restrictions upon the thickness of the individual elements which might otherwise result from the kerf width.
摘要翻译：传感器阵列使用多层换能器元件构成，每层换能器元件具有能量通道，例如空间，以允许能量自由地通过另一层中的换能器元件。每个转换元件执行与其它换能元件相同的换能（能量转换）。换能器阵列可以是具有用于检测x射线或其他高能量射线的闪烁材料的检测器阵列，其中每个元件可操作以检测与其他元件相同类型的能量（例如，x射线，γ射线，超声波等）元素。检测器元件的多层可允许构造切割或镶嵌检测器阵列，而不限制可能由切口宽度引起的各个元件的厚度。

10. 发明授权

US5262722A Apparatus for near surface nondestructive eddy current scanning of a conductive part using a multi-layer eddy current probe array 失效
标题翻译：使用多层涡流探针阵列对导电部件进行近表面非破坏性涡流扫描的装置
公开(公告)号：US5262722A
公开(公告)日：1993-11-16
申请号：US862699
申请日：1992-04-03
申请人： Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf
发明人： Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf
IPC分类号： G01N27/90 , G01R33/12
CPC分类号： G01N27/904 , G01N27/902
摘要： An apparatus for near surface, nondestructive eddy current scanning of a conductive part using a multi-layer eddy current probe array. Such structures of this type, generally, employ an ultra-thin, flexible, film-like, multi-layer eddy current probe array which is adapted to provide routine inspection of conductive parts while also providing improved signal integrity, signal transmission and isolation.
摘要翻译：一种使用多层涡流探针阵列对导电部件进行近表面非破坏性涡流扫描的装置。这种类型的这种结构通常采用超薄，柔性，膜状，多层涡流探针阵列，其适于提供导电部件的常规检查，同时还提供改进的信号完整性，信号传输和隔离。

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