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公开(公告)号：US5608691A
公开(公告)日：1997-03-04
申请号：US503777
申请日：1996-07-18
CPC分类号： B06B1/04
摘要： A shield for an electromagnetic acoustic transducer (EMAT) has multiple layers of electrically insulating and electrically conductive materials which contain a coil of the EMAT. A first insulating layer lies directly on top of the coil and is attached thereto by a suitable layer of non-conductive adhesive. A second layer having both insulating and conductive portions is provided on a side of the coil opposite the first insulating layer such that the coil is completely encapsulated within and in direct contact only with the insulating portions of the first and second layers. The insulating portion of the second layer has a high electrical resistance. A third, conductive layer having a conductive adhesive side is provided in contact with the conductive portion of the second layer. The third layer is also provided with a window extending completely therethrough having dimensions coextensive with those of the coil; shielding of the coil itself by this third layer is thus prevented. Finally, a fourth insulating layer preferably made of a thin layer of ultrahigh molecular weight polyethylene or similar insulating material is attached to the underlying third, conductive layer by adhesive means.An alternative shield and coil arrangement is also disclosed, wherein the coil is etched on one side of a substrate and a corresponding shield configuration is etched on the other side, resulting in an integrated shield and coil assembly for use in an electromagnetic acoustic transducer.
摘要翻译： 用于电磁声换能器（EMAT）的屏蔽件具有多层电绝缘和导电材料，其包含EMAT的线圈。 第一绝缘层直接位于线圈的顶部，并通过合适的非导电粘合剂层附着在其上。 具有绝缘和导电部分的第二层设置在与第一绝缘层相对的线圈的一侧上，使得线圈完全封装在第一和第二层的绝缘部分内并直接接触。 第二层的绝缘部分具有高的电阻。 具有导电粘合剂侧的第三导电层设置成与第二层的导电部分接触。 第三层还设置有完全延伸的窗口，其具有与线圈的尺寸共同的尺寸; 因此防止了该第三层对线圈本身的屏蔽。 最后，优选由超高分子量聚乙烯或类似绝缘材料的薄层制成的第四绝缘层通过粘合方式附着在下面的第三导电层上。 还公开了另一种屏蔽和线圈装置，其中线圈在衬底的一侧被蚀刻，并且在另一侧蚀刻相应的屏蔽结构，从而形成用于电磁声换能器的集成屏蔽和线圈组件。
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公开(公告)号：US5760307A
公开(公告)日：1998-06-02
申请号：US531573
申请日：1995-09-07
CPC分类号： B06B1/04 , G01N29/07 , G01N29/2412 , G01N29/2487 , G01N2291/0422 , G01N2291/0423 , G01N2291/0427 , G01N2291/044 , G01N2291/052 , G01N2291/101 , G01N2291/267
摘要： A method and apparatus of inspecting for flaws in a specular reflector, where the flaws having an expected length and the reflector is electrically conductive. The method includes directing a beam of an electromagnetic acoustic transmitting transducer along a beam axis toward the specular reflector for producing a reflected electromagnetic acoustic beam. The transmitted beam has side lobes with zero points therebetween, at least some of the side lobes being major side lobes. The reflected beam is received using an electromagnetic acoustic receiving transmitter set at an angle to the beam axis, the angle being selected to be at one of the zero points and past all of the major lobes of the transmitted beam to eliminate root and crown signals of the weld, in the reflected signal.
摘要翻译： 检查镜面反射器中的缺陷的方法和装置，其中具有期望长度的缺陷和反射器是导电的。 该方法包括将电磁声发射换能器的光束沿着光束轴线朝向镜面反射器引导以产生反射的电磁声束。 透射光束具有在其间具有零点的旁瓣，至少一些旁瓣是主旁瓣。 使用与波束轴成一定角度的电磁声接收发射机来接收反射光束，该角度被选择为处于透射光束的零点和所有主波瓣之一处，以消除透射光束的根和冠状信号 焊缝，在反射信号中。
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3.发明授权
公开(公告)号：US6158285A
公开(公告)日：2000-12-12
申请号：US918292
申请日：1997-08-26
CPC分类号： G01N29/2456 , G01N29/0645 , G01N29/07 , G01N29/2412 , G01N2291/0423 , G01N2291/0427 , G01N2291/044 , G01N2291/102 , G01N2291/267
摘要： A method for inspecting welds uses a single EMAT tranducer operated in pulse-echo mode that sends and receives Rayleigh waves to detect defects in a weld between sheet plates of dissimilar thicknesses.
摘要翻译： 用于检查焊缝的方法使用以脉冲回波模式操作的单个EMAT传感器，其发送和接收瑞利波，以检测不同厚度的板之间的焊缝中的缺陷。
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公开(公告)号：US5526691A
公开(公告)日：1996-06-18
申请号：US511049
申请日：1995-08-03
CPC分类号： G01N29/2412 , G01N2291/0258 , G01N2291/0422 , G01N2291/044 , G01N2291/102 , G01N2291/2634 , G01N2291/2695
摘要： A method for detecting corrosion fatigue cracks in membraned boiler tubes in a membrane tube panel employs at least one EMAT coil generating ultrasonic SH shear waves at a predetermined beam angle. The method of the present invention provides better signal-to-noise ratios than conventional ultrasonic techniques as well as not requiring any couplant.
摘要翻译： 用于检测膜管板中的膜式锅炉管中的腐蚀疲劳裂纹的方法使用至少一个EMAT线圈，以预定的光束角产生超声波SH剪切波。 本发明的方法提供比常规超声技术更好的信噪比以及不需要任何耦合剂。
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公开(公告)号：US5714689A
公开(公告)日：1998-02-03
申请号：US842402
申请日：1997-04-24
IPC分类号： G01N29/04 , G01N29/24 , G01N29/265 , G01N29/20
CPC分类号： G01N29/2412 , G01N29/265 , G01N2291/0422 , G01N2291/0423 , G01N2291/044 , G01N2291/048 , G01N2291/105 , G01N2291/2632
摘要： A flaw detection method and arrangement utilizes electromagnetic acoustic transducers (EMATs) which ultrasonically test a material for cracks or flaws. Four EMATs are used in a pitch-catch configuration, i.e. two pairs of EMAT transmitters and receivers. The EMAT transmitters and receivers are arranged such that a first EMAT transmitter is located on the surface diagonally across from a first EMAT receiver and a second EMAT transmitter is located diagonally across from a second EMAT receiver. The first and second EMAT transmitters transmit ultrasonic signals to the first and second EMAT receivers respectively; and these ultrasonic signals are transmitted orthogonal to each other. A pulser/receiver is operatively connected to the first and second EMAT transmitters and the first and second EMAT receivers for inducing the EMAT transmitters to propagate their respective waves. The pulser/receiver also receives the signal transmitted through the material after being received by the first and second EMAT receivers. A power source is operatively connected to the pulser/receiver for powering the arrangement; and a computer or oscillator is operatively connected to the pulser/receiver for recording and displaying the signals.
摘要翻译： 瑕疵检测方法和装置使用电磁声换能器（EMAT），其超声波测试材料的裂纹或缺陷。 四个EMAT用于俯仰配置，即两对EMAT发射机和接收机。 EMAT发射器和接收器布置成使得第一EMAT发射器位于第一EMAT接收器的对角线上的表面上，并且第二EMAT发射器位于与第二EMAT接收器对角地对准的位置。 第一和第二EMAT发射机分别向第一和第二EMAT接收机发送超声波信号; 并且这些超声波信号彼此正交地传输。 脉冲发生器/接收器可操作地连接到第一和第二EMAT发射器以及第一和第二EMAT接收器，用于诱导EMAT发射器传播它们各自的波。 脉冲发生器/接收器还在由第一和第二EMAT接收器接收之后接收通过材料传输的信号。 电源可操作地连接到脉冲发生器/接收器以为该装置供电; 并且计算机或振荡器可操作地连接到脉冲发生器/接收器用于记录和显示信号。
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6.发明授权
公开(公告)号：US5436873A
公开(公告)日：1995-07-25
申请号：US251542
申请日：1994-05-31
CPC分类号： B06B1/04
摘要： A shield for an electromagnetic acoustic transducer (EMAT) has multiple layers of electrically insulating and electrically conductive materials which contain a coil of the EMAT. A first insulating layer lies directly on top of the coil and is attached thereto by a suitable layer of non-conductive adhesive. A second layer having both insulating and conductive portions is provided on a side of the coil opposite the first insulating layer such that the coil is completely encapsulated within and in direct contact only with the insulating portions of the first and second layers. The insulating portion of the second layer has a high electrical resistance. A third, conductive layer having a conductive adhesive side is provided in contact with the conductive portion of the second layer. The third layer is also provided with a window extending completely therethrough having dimensions coextensive with those of the coil; shielding of the coil itself by this third layer is thus prevented. Finally, a fourth insulating layer preferably made of a thin layer of ultrahigh molecular weight polyethylene or similar insulating material is attached to the underlying third, conductive layer by adhesive means.
摘要翻译： 用于电磁声换能器（EMAT）的屏蔽件具有多层电绝缘和导电材料，其包含EMAT的线圈。 第一绝缘层直接位于线圈的顶部，并通过合适的非导电粘合剂层附着在其上。 具有绝缘和导电部分的第二层设置在与第一绝缘层相对的线圈的一侧上，使得线圈完全封装在第一和第二层的绝缘部分内并直接接触。 第二层的绝缘部分具有高的电阻。 具有导电粘合剂侧的第三导电层设置成与第二层的导电部分接触。 第三层还设置有完全延伸的窗口，其具有与线圈的尺寸共同的尺寸; 因此防止了该第三层对线圈本身的屏蔽。 最后，优选由超高分子量聚乙烯或类似绝缘材料的薄层制成的第四绝缘层通过粘合方式附着在下面的第三导电层上。
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7.发明申请METHODS OF PROCESSING CHECK IMAGE DATA FROM A REMOTE DEPOSIT CAPTURE DEVICE TO DETECT A DUPLICATE CHECK DEPOSIT 审中-公开处理方法从远程存款检测设备检查图像数据以检测双重检查存款公开(公告)号：US20130198069A1
公开(公告)日：2013-08-01
申请号：US13362207
申请日：2012-01-31
申请人： Paul J. Latimer
发明人： Paul J. Latimer
IPC分类号： G06Q40/02
CPC分类号： G06Q40/02 , G06Q20/042
摘要： A method is provided of operating a check image data processing facility to detect a duplicate check deposit. The method comprises receiving from a remote deposit capture device check image data which is representative of an image of a check being deposited by the customer, determining whether a MICR code line of the check image matches a MICR code line stored in a check item database, extracting check data from at least one focus area of the check image, transmitting a message to the remote deposit capture device to indicate to the customer that the check is a duplicate check based upon the check data extracted from the at least one focus area of the check image.
摘要翻译： 提供了一种操作检查图像数据处理设备以检测重复支票存款的方法。 所述方法包括从远程存储捕获设备接收检查表示由客户存放的检查的图像的图像数据，确定检查图像的MICR代码行是否与存储在检查项数据库中的MICR代码行匹配， 从所述检查图像的至少一个焦点区域提取检查数据，将消息发送到所述远程存储捕获设备，以基于从所述至少一个对焦区域提取的检查数据向所述客户指示所述检查是重复检查 检查图像。
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公开(公告)号：US5237874A
公开(公告)日：1993-08-24
申请号：US772316
申请日：1991-10-07
CPC分类号： G01N29/26 , G01N29/2412 , G01N2291/0422 , G01N2291/0423 , G01N2291/044 , G01N2291/101 , G01N2291/2632 , G01N2291/2634
摘要： This invention pertains to a method and apparatus of non-destructive testing wherein a generally bidirectional wave generating electromagnetic acoustic transducer is pivotally mounted upon a base with this transducer being continuously rotated or oscillated upon the base as it is moved with respect to the workpiece (or the workpiece is moved with respect to the base). This oscillation or rotation causes a wave to be generated along an arc with these waves extending radially outward from the base so that any flaws in the workpiece can be struck at an angle as close to 90 degrees as possible (the optimal incident angle).
摘要翻译： 本发明涉及一种非破坏性测试的方法和装置，其中大致双向的产生波动的电磁换能器枢转地安装在基座上，当该换能器相对于工件移动时，该换能器在基座上连续地旋转或振荡（或 工件相对于基座移动）。 这种振荡或旋转使得沿着电弧产生波，这些波从基座径向向外延伸，使得工件中的任何缺陷可以以尽可能接近90度的角度（最佳入射角）被击打。
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公开(公告)号：US5035143A
公开(公告)日：1991-07-30
申请号：US507427
申请日：1990-04-10
申请人： Paul J. Latimer , Hubert L. Whaley
发明人： Paul J. Latimer , Hubert L. Whaley
IPC分类号： G01N29/04
CPC分类号： G01N29/041 , G01N2291/0421 , G01N2291/0422
摘要： A method is disclosed for ultrasonically detecting creep swelling in tubular members such as fossil utility steam lines and headers. Ultrasonic surface waves (34) are propagated around the pipe (10) in a circumferential direction. The transit time (.DELTA.T) is measured by using the pulse overlap technique with an oscilloscope (24). Circumferential dimension is obtained by multiplying the transit time (.DELTA.T) by the known Raleigh velocity of sound in the tubular member.
摘要翻译： 公开了一种用于超声波检测管状构件如化石燃用蒸汽管线和集管中的蠕变膨胀的方法。 超声表面波（34）沿圆周方向在管道（10）周围传播。 通过使用示波器（24）的脉冲重叠技术来测量传输时间（DELTA T）。 通过将传播时间（DELTA T）乘以管状构件中已知的罗利声速来获得周向尺寸。
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公开(公告)号：US6079273A
公开(公告)日：2000-06-27
申请号：US69445
申请日：1998-04-29
IPC分类号： G01N29/24 , G01N29/265 , G01N29/04
CPC分类号： G01N29/265 , G01N29/2412 , G01N2291/0422 , G01N2291/2634
摘要： A method for non-destructively testing closely-spaced objects, such as header tube stubs for a furnace or boiler using electromagnetic acoustic transducers (EMATs) having meander coil sensors. The small size of the sensor combined with the need to move the sensor only a small fraction of the circumference of a tube to scan the entire circumference of the tube under test permits easy and accurate testing of an entire tube, even when the tube is one of a closely-spaced bundle.
摘要翻译： 一种用于非破坏性地测试紧密间隔物体的方法，例如使用具有曲折线圈传感器的电磁声换能器（EMAT）的用于炉或锅炉的集管管桩。 传感器的小尺寸与需要将传感器移动到管的圆周的一小部分以扫描待测试管的整个圆周的需要允许容易且准确地测试整个管，即使管是一个 一个紧密排列的束。
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