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1. 发明授权

US6125706A High temperature electromagnetic acoustic transducer 失效
标题翻译：高温电磁换能器
公开(公告)号：US6125706A
公开(公告)日：2000-10-03
申请号：US898851
申请日：1997-07-25
申请人： Jonathan D. Buttram , John H. Flora
发明人： Jonathan D. Buttram , John H. Flora
IPC分类号： B06B1/04 , G01N29/22 , G01N29/24 , G01N29/42 , G01N29/04
CPC分类号： G01N29/42 , B06B1/045 , G01N29/228 , G01N29/2412 , G01N2291/0422 , G01N2291/0423 , G01N2291/0427
摘要： An improved high temperature electromagnetic acoustic transducer (EMAT) for conducting inspections of materials with elevated temperatures, which has cooling means using gas cooling, such as air or nitrogen, for cooling the transducer RF coil, the onboard circuitry and magnets, while also providing for the easy removal of the coil and onboard circuitry. Prior art EMAT's are susceptible to failure since high temperatures reduces the signal quality of the electronics components, degrades the insulation of the RF coils, and permanent magnets can loose field strength.
摘要翻译：一种改进的高温电磁换能器（EMAT），用于对具有高温的材料进行检查，其具有使用气体冷却（例如空气或氮气）的冷却装置来冷却换能器RF线圈，车载电路和磁体，同时还提供容易地去除线圈和车载电路。现有技术的EMAT易受故障的影响，因为高温降低了电子部件的信号质量，降低了RF线圈的绝缘，并且永久磁铁可能会使磁场强度下降。

2. 发明授权

US5491409A Multiple yoke eddy current technique for detection of surface defects on metal components covered with marine growth 失效
标题翻译：用于检测覆盖有海洋生长的金属部件上的表面缺陷的多重轭涡流技术
公开(公告)号：US5491409A
公开(公告)日：1996-02-13
申请号：US973515
申请日：1992-11-09
申请人： John H. Flora , Hubert L. Whaley
发明人： John H. Flora , Hubert L. Whaley
IPC分类号： G01N27/90 , G01R33/12 , G01N27/82
CPC分类号： G01N27/902
摘要： Defects such as corrosion located on the exterior of a component such as a metal pipe, tank, vessel or support structure which is insulated by a coating or cover, are detected by a low frequency eddy current (LOFEC) system. A magnetizing yoke in the shape of an inverted U is placed on the cover insulating a metal component. An excitation coil is wrapped around the magnetizing yoke for carrying an altering current in order to produce an alternating magnetic field by the magnetized yoke. The alternating magnetic field produced by the magnetized yoke induces an eddy current which runs through the metal component between the legs of the yoke. A pair of magnetic flux sensors are used in differential connection beneath one or more excitation coils which can be articulated to conform to varying pipe diameter. In addition, an absolute signal response can be obtained from one of the receiver coils. This arrangement allows for the reduction and minimizing of unwanted and extraneous signal responses caused by variations in the component structure while the yoke is scanned about the cover and a positive separation of loss of metal signals (CUI) from artifact signals. Defects located on the surface of pipes or tanks covered with marine growth can be detected using the DPEC probe with either a signal magnetic flux sensor located beneath the excitation coil or a plurality of magnetic flux sensors differentially connected.
摘要翻译：通过低频涡流（LOFEC）系统检测位于诸如金属管，罐，容器或由涂层或盖绝缘的支撑结构的部件的外部上的腐蚀的缺陷。呈倒U形的磁化轭放置在绝缘金属部件的盖上。励磁线圈缠绕在磁轭上，用于承载改变电流，以便通过磁化轭产生交变磁场。由磁化轭产生的交变磁场引起涡流通过轭的腿之间的金属部件。在一个或多个励磁线圈下方的差动连接中使用一对磁通量传感器，该励磁线圈可铰接以符合变化的管道直径。此外，可以从接收器线圈之一获得绝对信号响应。这种布置允许减少和最小化由元件结构的变化引起的不必要的和无关的信号响应，同时轭围绕盖被扫描，并且金属信号（CUI）与伪像信号的损失的正分离。可以使用位于激励线圈下方的信号磁通传感器或差分连接的多个磁通量传感器的DPEC探头来检测位于被海洋生长覆盖的管道或罐的表面上的缺陷。

3. 发明授权

US5434506A Eddy current inspection with stationary magnetic fields and scanning sensor arrays 失效
标题翻译：用固定磁场和扫描传感器阵列进行涡流检测
公开(公告)号：US5434506A
公开(公告)日：1995-07-18
申请号：US973516
申请日：1992-11-09
申请人： John H. Flora
发明人： John H. Flora
IPC分类号： G01N27/90 , G01N27/82 , G01R33/12
CPC分类号： G01N27/902
摘要： Defects such as corrosion located on a covered metal component are detected through Eddy current inspection using stationary magnetic fields and scanning sensors arrays. A magnetizing yoke is held fixed to the cover of the component and a magnetic flux sensor is used to scan the area between the legs of the yoke over the cover of the component. Also, a fixed array of sensors can be provided between the legs of the yoke for automatic multiplexing of the sensors and sampling in sequence of signal responses picked up by sensors in the sensor array. Additionally, a stationary magnetic field arrangement is provided by a plurality of probes aligned adjacent and parallel with each other. A fixed array of magnetic flux sensors are arranged between the legs of the aligned probes for scanning for defects. This arrangement of fixed sesnsors can be used for underwater use and sealed by a sealing compound. An attachment means can be used for holding the arrangement stationary with respect to the surface of a submerged component during sampling of the signal responses.
摘要翻译：通过使用固定磁场和扫描传感器阵列的涡流检测来检测位于被覆金属部件上的腐蚀的缺陷。磁化轭被固定在组件的盖上，并且使用磁通量传感器来扫描在组件的盖上的轭的腿之间的区域。此外，传感器的固定阵列可以设置在轭的腿之间，用于传感器的自动多路复用和按照传感器阵列中的传感器拾取的信号响应的顺序进行采样。此外，通过彼此相邻并平行排列的多个探针提供固定磁场布置。在对准的探针的腿之间布置有固定的磁通量传感器阵列，用于扫描缺陷。这种固定式螺丝刀的布置可以用于水下使用，并由密封剂密封。在采样信号响应期间，可以使用连接装置来相对于浸没部件的表面保持静止。

4. 发明授权

US5085082A Apparatus and method of discriminating flaw depths in the inspection of tubular products 失效
标题翻译：在管状产品的检查中区分缺陷深度的装置和方法
公开(公告)号：US5085082A
公开(公告)日：1992-02-04
申请号：US603334
申请日：1990-10-24
申请人： Barry I. Cantor , John H. Flora , Paul J. Latimer
发明人： Barry I. Cantor , John H. Flora , Paul J. Latimer
IPC分类号： G01N29/04 , G01N29/06 , G01N29/11 , G01N29/24 , G01N29/27 , G01N29/30 , G01N29/40 , G01N29/44
CPC分类号： G01N29/30 , G01N29/041 , G01N29/0618 , G01N29/11 , G01N29/2412 , G01N29/27 , G01N29/40 , G01N29/4445 , G01N2291/0234 , G01N2291/0421 , G01N2291/0422 , G01N2291/044 , G01N2291/102 , G01N2291/2634
摘要： An apparatus and method for discriminating between flaw depths of 5% and 10% of the tube wall thickness of electric resistance welds are disclosed. At least two electromagnetic acoustic transducers (EMATs) are employed to generate ultrasonic surface and shear waves. A logic circuit discriminating means selectively activates an alarm for flaw depths of about 10% or greater, but does not activate the alarm for flaw depths of about 5% or less, thereby avoiding waste in time and materials.
摘要翻译：公开了一种用于区分电阻焊缝的管壁厚度的5％至10％的缺陷深度的装置和方法。使用至少两个电磁声换能器（EMAT）来产生超声表面和剪切波。逻辑电路识别装置选择性地激活大约10％或更大的漏洞深度的报警器，但是不会为约5％或更少的裂纹深度激活报警器，从而避免浪费时间和材料。

5. 发明授权

US4710710A Scanning apparatus and method for inspection of header tube holes 失效
标题翻译：头管孔检查的扫描仪和方法
公开(公告)号：US4710710A
公开(公告)日：1987-12-01
申请号：US855100
申请日：1986-04-22
申请人： John H. Flora , Robert E. Womack , Carlton E. Stinnett , Claude W. Dalton
发明人： John H. Flora , Robert E. Womack , Carlton E. Stinnett , Claude W. Dalton
IPC分类号： G01N27/20 , F22B37/00 , G01N27/90 , G01N27/82 , G01R33/12
CPC分类号： F22B37/005 , G01N27/902
摘要： An apparatus for scanning header tube holes includes a probe assembly designed to engage the surface of the header encircling a header tube hole. The probe assembly includes a spring mounted sensor, in a preferred arrangement, an eddy current probe. A mechanism is provided for supporting and positioning the probe assembly. The mechanism is adapted, in operation, with resilient rings engaging the tube stub. A drive device is provided for imparting axial and circumferential movement to the probe relative to the surface of the hole which is to be inspected.
摘要翻译：用于扫描集管管孔的装置包括设计成接合包围集管管孔的集管表面的探针组件。探针组件包括弹簧安装的传感器，在优选的布置中，涡流探针。提供了用于支撑和定位探针组件的机构。该机构在操作中适应于与管短管接合的弹性环。提供驱动装置，用于相对于待检查的孔的表面向探针施加轴向和周向运动。

6. 发明授权

US4124792A Eddy current probe subsystem 失效
标题翻译：涡流探头子系统
公开(公告)号：US4124792A
公开(公告)日：1978-11-07
申请号：US818631
申请日：1977-07-25
申请人： John H. Flora , Nuri Akgerman
发明人： John H. Flora , Nuri Akgerman
IPC分类号： B23K9/127 , B23Q35/13 , B23K9/00
CPC分类号： B23K9/1276 , B23Q35/13
摘要： In a machine for edge welding magnetically permeable work pieces, e.g. ar plate, the improvement comprising probe means for centering the torch on the centerline of the gap between the work pieces. The probe also provides an electric signal representing the path taken by the torch along the gap joint. The signal can be used to program the machine for successive multiple passes over the gap joint.
摘要翻译：在用于边缘焊接导磁工件的机器中，例如，装甲板的改进包括探针装置，用于将割炬对准工件之间的间隙的中心线。探头还提供一个电信号，表示由割炬沿间隙接头所采取的路径。该信号可以用于对机器进行编程以在间隙接头上连续多次通过。

7. 发明授权

US3488576A Ferromagnetic ball magnetizer and remanence detector 失效
公开(公告)号：US3488576A
公开(公告)日：1970-01-06
申请号：US3488576D
申请日：1967-06-23
申请人： HOY O MCINTIRE , HARVEY H HUNTER , CLIFFORD L SEALE , JOHN H FLORA
发明人： MCINTIRE HOY O , HUNTER HARVEY H , SEALE CLIFFORD L , FLORA JOHN H
IPC分类号： G01N27/80 , G01R33/14 , H01F13/00 , G01R33/02
CPC分类号： H01F13/00 , G01N27/80 , G01R33/14

8. 发明授权

US3488575A Ferromagnetic ball magnetizer and remanence detector 失效
标题翻译： FERROMAGNETIC BALL MAGNETIZER和REMANENCE DETECTOR
公开(公告)号：US3488575A
公开(公告)日：1970-01-06
申请号：US3488575D
申请日：1967-06-23
申请人： HOY O MCINTIRE , HARVEY H HUNTER , CLIFFORD L SEALE , JOHN H FLORA
发明人： MCINTIRE HOY O , HUNTER HARVEY H , SEALE CLIFFORD L , FLORA JOHN H
IPC分类号： G01N27/80 , G01R33/14 , H01F13/00 , G01R33/02
CPC分类号： G01R33/14 , G01N27/80 , H01F13/00

9. 发明授权

US4914975A Serpentine tube inspection positioning spine 失效
公开(公告)号：US4914975A
公开(公告)日：1990-04-10
申请号：US399036
申请日：1989-08-28
申请人： William E. Bailey , John H. Flora , Robert E. Womack
发明人： William E. Bailey , John H. Flora , Robert E. Womack
IPC分类号： F16C1/20
CPC分类号： F16C1/20 , F16C1/28 , Y10T74/20456
摘要： A serpentine tube inspection positioning spine formed from a plurality of identical links mated together. Each link has first and second bifurcated ends with the first end sized to fit within the second end of an adjacent link. Links are mated together by a pivot pin or axle which is accepted in a bore through the bifurcated ends. The second bifurcated end is provided with a substantially oval-shaped bore to allow sliding of the adjacent links relative to each other. Flat alignment faces on each end, with the first end having rounded corners, prevent buckling due to compressive forces during insertion while still allowing pivoting of the links for traveling through tubing bends.

10. 发明授权

US08319494B2 Pipeline inspection tool with double spiral EMAT sensor array 有权
标题翻译：双螺旋EMAT传感器阵列管道检测工具
公开(公告)号：US08319494B2
公开(公告)日：2012-11-27
申请号：US12642031
申请日：2009-12-18
申请人： James Simek , Jed Ludlow , John H. Flora , Syed M. Ali , Huidong Gao
发明人： James Simek , Jed Ludlow , John H. Flora , Syed M. Ali , Huidong Gao
IPC分类号： G01R19/18 , G01R19/22
CPC分类号： G01N27/87
摘要： A pipeline inspection tool includes two pole magnets oriented at an oblique angle relative to the central longitudinal axis of the tool body. An array of sensor coil sets is located between opposing edges of the two pole magnets and oriented perpendicular to the central longitudinal axis. Each sensor coil set includes a transmitter coil and two opposing pairs of receiver coils that are gated to receive reflections from the wall of a tubular member. Because the line of sensor coils is rotated relative to the magnetic bias field, the receiver coils are in-line with, and have the same angular orientation as, the transmitter coil. The tool provides improved sensitivity to small defects, substantial decrease in RF pulser power requirements, full circumferential coverage, self-calibration of the transmitted signals, and less interference between transmitter coils caused by acoustic ring around.
摘要翻译：管道检查工具包括相对于工具主体的中心纵向轴线倾斜定向的两个磁极。传感器线圈组的阵列位于两个极磁体的相对边缘之间并且垂直于中心纵向轴线定向。每个传感器线圈组包括发射器线圈和两个相对的接收器线圈对，其被门控以从管状构件的壁接收反射。因为传感器线圈的线相对于磁偏置场旋转，所以接收器线圈与发射器线圈成一直线并具有相同的角度定向。该工具提供对小缺陷的改进的灵敏度，RF脉冲发生器功率要求的显着降低，全周期覆盖，发射信号的自校准以及由环形周围引起的发射器线圈之间的较小干扰。

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