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1. 发明授权

US06356069B1 Eddy current calibration standard 失效
标题翻译：涡流校准标准
公开(公告)号：US06356069B1
公开(公告)日：2002-03-12
申请号：US09453089
申请日：1999-12-02
申请人： Richard L. Trantow , Francis H. Little , Gigi O. Gambrell , John W. Ertel
发明人： Richard L. Trantow , Francis H. Little , Gigi O. Gambrell , John W. Ertel
IPC分类号： G01R3500
CPC分类号： G01N27/9086
摘要： A calibration standard for calibrating an eddy current inspection probe sized and shaped to inspect a preselected non-planar feature of a manufactured part. The feature extends in a longitudinal direction and in a lateral direction. Further, the feature has an end profile as viewed in the longitudinal direction having a substantially invariant shape and orientation. The calibration standard includes a body having a non-planar surface extending in a longitudinal direction and in a lateral direction. The standard also has an end profile as viewed in the longitudinal direction of the surface substantially identical to the profile of the feature. The surface of the body has an elongate narrow opening extending into the body substantially normal to the surface and traversing the surface of the body at a substantially constant angle with respect to the longitudinal direction of the surface as viewed normal to the surface.
摘要翻译：用于校准涡流检查探头的校准标准，其尺寸和形状用于检查制造部件的预选非平面特征。该特征沿纵向方向和横向方向延伸。此外，该特征具有在纵向方向上具有基本上不变的形状和取向的端部轮廓。校准标准包括具有在纵向方向和横向方向上延伸的非平面表面的主体。该标准还具有在表面的纵向方向上观察的端部轮廓，其基本上与特征的轮廓相同。主体的表面具有一个细长的狭窄的开口，其基本上垂直于表面延伸到主体中，并且以垂直于表面的方式相对于表面的纵向方向以基本恒定的角度横过主体的表面。

2. 发明授权

US4682964A Ionization detector 失效
标题翻译：电离检测器
公开(公告)号：US4682964A
公开(公告)日：1987-07-28
申请号：US832980
申请日：1986-02-25
申请人： Douglas S. Steele , Francis H. Little , Joseph J. Sostarich , Douglas E. Ingram
发明人： Douglas S. Steele , Francis H. Little , Joseph J. Sostarich , Douglas E. Ingram
IPC分类号： G01T1/185 , A61B6/03 , H01J47/00 , H01J47/02 , G01T1/18
CPC分类号： H01J47/002 , H01J47/02
摘要： Method for improving signal response of a linear array ionization detector. The detector employs a detector assembly having plural closely-spaced detector elements mounted on a substrate with the assembly positioned in a high pressure, gas-filled chamber. Signal response is improved by cleaning the assembly and coating it with a moisture resistant material before insertion into the chamber.
摘要翻译：改善线性阵列电离检测器信号响应的方法。检测器采用具有安装在基板上的多个紧密间隔的检测器元件的检测器组件，该组件位于高压充气室中。通过清洁组件并在插入室内之前用防潮材料涂覆信号来改善信号响应。

3. 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。

4. 发明授权

US5848115A Computed tomography metrology 失效
标题翻译：计算机断层扫描计量学
公开(公告)号：US5848115A
公开(公告)日：1998-12-08
申请号：US850673
申请日：1997-05-02
申请人： Francis H. Little , John C. Janning
发明人： Francis H. Little , John C. Janning
IPC分类号： G01N23/04 , G06T1/00 , G06T17/00 , A61B6/03
CPC分类号： G06T17/00 , G01N23/046 , G01N2223/419 , Y10S378/901
摘要： The invention is a three-dimensional computed tomography method for inspecting and comparing actual geometry to predetermined geometry of an object. The method includes the following steps: A) three-dimensionally scanning the object using computed tomography to produce multiple slices of actual geometrical data of the object; B) processing the multiple slices of actual geometrical data into actual boundary data which defines internal and external boundaries of the object; and C) producing actual point cloud data from the actual boundary data. The method further includes comparing the actual point cloud data to object geometry predetermined data. The comparing may include outputting an image comparing the point cloud data to the predetermined data and the image may represent the geometry of non-conformance between the point cloud data and the predetermined data. The image may be rotated to present the non-conformance from different viewpoints around the feature.
摘要翻译：本发明是用于检查和比较实际几何与对象的预定几何的三维计算机断层摄影方法。该方法包括以下步骤：A）使用计算机断层摄影三维扫描物体以产生物体的实际几何数据的多个切片; B）将实际几何数据的多个切片处理成实际边界数据，界定对象的内部和外部边界; 和C）从实际边界数据生成实际点云数据。该方法还包括将实际点云数据与对象几何预定数据进行比较。比较可以包括输出将点云数据与预定数据进行比较的图像，并且图像可以表示点云数据和预定数据之间的不一致的几何形状。可以旋转图像以从特征周围的不同视点呈现不一致。

5. 发明授权

US06815872B2 Ultrasonic transducer system having an organic-structural-material housing 有权
标题翻译：具有有机结构材料外壳的超声换能器系统
公开(公告)号：US06815872B2
公开(公告)日：2004-11-09
申请号：US10104758
申请日：2002-03-21
申请人： Douglas Edward Ingram , Richard Eugene Klaassen , Francis H. Little
发明人： Douglas Edward Ingram , Richard Eugene Klaassen , Francis H. Little
IPC分类号： H02N200
CPC分类号： G10K11/006
摘要： An ultrasonic transducer system has at least one ultrasonic transducer. Each ultrasonic transducer includes a housing having a wall that is made at least in part of an organic structural material that is substantially impervious to water; and an ultrasonic sensor element located at least in part within the housing and positioned to transceive ultrasonic signals. The wall is preferably cylindrical in shape and made of polyvinylchloride plastic. An electrically grounded shield is within the housing and adjacent to an interior wall surface. The ultrasonic sensor element may be a piezoelectric copolymer film ultrasonic sensor element.
摘要翻译：超声换能器系统具有至少一个超声换能器。每个超声波换能器包括具有至少部分由基本上不透水的有机结构材料制成的壁的壳体; 以及超声波传感器元件，其至少部分地位于所述壳体内并且定位成收发超声波信号。该壁优选为圆柱形，由聚氯乙烯塑料制成。电接地屏蔽件在壳体内并且邻近内壁表面。超声波传感器元件可以是压电共聚物膜超声波传感器元件。

6. 发明授权

US5013922A Reduced thickness radiation window for an ionization detector 失效
标题翻译：用于电离检测器的减小厚度的辐射窗口
公开(公告)号：US5013922A
公开(公告)日：1991-05-07
申请号：US492169
申请日：1990-03-13
申请人： Francis H. Little , Douglas E. Ingram
发明人： Francis H. Little , Douglas E. Ingram
IPC分类号： H01J47/00
CPC分类号： H01J47/004
摘要： A method and apparatus for increasing response to low intensity radiation in a radiation detector includes a housing surrounding a chamber, a window adjoining the chamber, and a slot formed in one side of the chamber for admitting a circuit board into the chamber. The board supports an array of elongated detector elements on a surface thereof, an electrically conductive plate within the chamber and substantially parallel with the array of detector elements, sealant means in the slot surrounding the circuit board for providing a gas impervious seal, an ionizable gas contained in the chamber under high pressure, and a collimator mounted in a collimator support and positioned outside the chamber for directing ionizing radiation through the window for detection. The method comprises reducing the window thickness to a value below that required to withstand gas pressure in the chamber without distortion, and also comprises clamping the collimator support to the housing and against the window such that a major portion of the window abuts the collimator support and is externally supported thereby.
摘要翻译：用于增加对辐射检测器中的低强度辐射的响应的方法和装置包括：围绕室的壳体，与所述室邻接的窗口，以及形成在所述室的一侧中的槽，用于允许电路板进入所述室。板支撑在其表面上的细长检测器元件阵列，腔室内的导电板并且基本上平行于检测器元件阵列，围绕电路板的槽中的密封装置用于提供不透气密封件，可电离气体容纳在室内的高压下，以及准直器，其安装在准直器支撑件中并定位在室外，用于引导电离辐射通过窗口进行检测。该方法包括将窗口厚度减小到低于在室内承受气体压力而不变形所需的值，并且还包括将准直器支撑件夹紧到壳体并抵靠窗户，使得窗的主要部分邻接准直器支撑件，并且由外部支撑。

7. 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。

8. 发明授权

US5283822A Blackline indicator for use in tomographic and/or radioscopic inspection of weld joints 失效
标题翻译：用于断层和/或焊接接头放射检查的黑线指示器
公开(公告)号：US5283822A
公开(公告)日：1994-02-01
申请号：US953151
申请日：1992-09-29
申请人： Francis H. Little , Gerald B. Nightingale
发明人： Francis H. Little , Gerald B. Nightingale
IPC分类号： G01N23/18 , H05G1/26 , H05G1/28
CPC分类号： G01N23/18 , H05G1/26 , G01N2223/1016 , G01N2223/629
摘要： A blackline indictor for use in tomographic and/or radioscopic inspection of a weld joint is disclosed. The indicator includes a first elongated member having a first end and a second end and a second elongated member juxtaposed to said first member and also having a first end and a second end. The first ends of the elongated members are in contact with one another, and a spacer is disposed between the first and second members to position the second ends of the members at a selected distance from one another. The selected distance is at least equal to a thickness of the weld joint under inspection, and the first and second members and the spacer define a calibrated wedge shaped gap which is radiographically imageable to permit determination and control of the x-ray inspection parameters. The blackline indicator constituents may be magnetized to hold the constituents together and to permit attachment of the indicator to a workpiece under inspection in a position where the calibrated wedge shaped gap will be substantially superimposed over the weld joint in a radiographic image thereof with one of the elongated members being substantially parallel to the weld joint.
摘要翻译：公开了用于焊接接头的断层和/或放射检查的黑线指示器。指示器包括具有第一端和第二端的第一细长构件和与所述第一构件并置并且还具有第一端和第二端的第二细长构件。细长构件的第一端彼此接触，并且间隔件设置在第一构件和第二构件之间，以将构件的第二端彼此间隔开选定的距离。所选择的距离至少等于被检查的焊接接头的厚度，并且第一和第二构件和间隔件限定校准的楔形间隙，其可放射学地成像以允许X射线检查参数的确定和控制。黑线指示器成分可以被磁化以将组件保持在一起，并且允许将指示器附接到被检查的工件，其中校准的楔形间隙将在其放射线图像中基本上叠加在焊接接头上的位置，其中细长构件基本上平行于焊接接头。

9. 发明授权

US4969110A Method of using a priori information in computerized tomography 失效
标题翻译：在计算机断层扫描中使用先验信息的方法
公开(公告)号：US4969110A
公开(公告)日：1990-11-06
申请号：US226497
申请日：1988-08-01
申请人： Francis H. Little , David L. Hampson
发明人： Francis H. Little , David L. Hampson
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00
CPC分类号： G06T11/008 , G01N23/046 , G01N2223/419 , Y10S378/901
摘要： To improve computerized tomography (CT) imaging quality, a priori information of the test object is developed by probing the surfaces thereof at a multiplicity of points sufficient to spatially locate and define the envelope of the test object cross section to be imaged. A CT scan of the test object is then performed, and the CT image reconstructed therefrom is corrected with this a priori information. To expedite a priori information development, the convex hull of the test object is constructed from X-ray projection data and fitted with the probe developed measurement data to define the cross section envelope.
摘要翻译：为了提高计算机断层摄影（CT）成像质量，通过以足以空间定位并限定待成像的被测物体横截面的包络线的多个点探测其表面来开发测试对象的先验信息。然后执行测试对象的CT扫描，并且用其先验信息校正从其重建的CT图像。为了加快先验信息开发，测试对象的凸包由X射线投影数据构成，并配有探针开发的测量数据，以定义横截面包络。

10. 发明授权

US5442286A Eddy current array inspection device 失效
标题翻译：涡流电流阵列检测装置
公开(公告)号：US5442286A
公开(公告)日：1995-08-15
申请号：US125469
申请日：1993-09-22
申请人： George H. Sutton, Jr. , Francis H. Little , Carl Granger, Jr. , Philip F. Stapf
发明人： George H. Sutton, Jr. , Francis H. Little , Carl Granger, Jr. , Philip F. Stapf
IPC分类号： G01N27/90 , G01N27/82
CPC分类号： G01N27/902
摘要： A device for inspecting a component, such as a dovetail slot of a gas turbine engine or the like, includes an eddy current array circuit having an active face for positioning on the surface of the component during the inspection operation and a backing disposed on a face of the eddy current array circuit opposite to the active face. The eddy current array circuit and the backing are disposed over the operating face and expandable sides of an expandable bar. The expandable bar has a slot formed therein with interior side edges which narrow toward the operating face of the bar at a predetermined slope. An expanding wedge with angled sides is positioned to cause the angled sides to respectively matingly engage the interior sides of the slot to cause the exterior sides of the expandable bar to expand outwardly a greater distance as the wedge is pushed deeper into the slot to cause the eddy current array circuit into conformance with the shape of the surface being inspected.
摘要翻译：用于检查诸如燃气涡轮发动机等的燕尾槽的部件的装置包括涡流阵列电路，其具有用于在检查操作期间在部件的表面上定位的主动面和设置在面部上的背衬与激活面相反的涡流阵列电路。涡流阵列电路和背衬设置在可扩张杆的操作面和可膨胀侧上。可膨胀杆具有形成在其中的槽，其内侧边缘以预定斜率朝向杆的操作面变窄。定位的具有成角度侧面的膨胀楔形物使得成角度的侧面分别配合地接合槽的内侧，以使得可膨胀杆的外侧向外扩张更大的距离，因为楔被更深地推入槽中，涡流阵列电路符合正在检查的表面的形状。

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