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1. 发明授权

US6122969A Main bang recovery EMAT 有权
标题翻译：主要爆炸恢复EMAT
公开(公告)号：US6122969A
公开(公告)日：2000-09-26
申请号：US138620
申请日：1998-08-24
申请人： Daniel T. MacLauchlan , Jimmy W. Hancock
发明人： Daniel T. MacLauchlan , Jimmy W. Hancock
IPC分类号： B06B1/04 , G01N29/24
CPC分类号： G01N29/2412 , B06B1/045 , G01N2291/0422 , G01N2291/0423 , G01N2291/102
摘要： An EMAT arrangement utilizes separate transmitter and receiver EMATs which may each be connected to a tuning capacitor by a stripline cable. An electrostatic shield may also be provided between the coils and the coils can be offset from each other by 1/2 the pitch distance of sections in the coil. This reduces the duration of main bang, thus making it possible for the EMAT arrangement to detect structures which are very close to the coils.
摘要翻译： EMAT装置使用单独的发射器和接收器EMAT，其可以通过带状线缆连接到调谐电容器。也可以在线圈之间设置静电屏蔽，并且线圈可以通过+ E，fra 1/2 + EE彼此偏移，线圈中部分的间距距离。这减少了主爆的持续时间，从而使得EMAT装置可以检测非常接近线圈的结构。

2. 发明授权

US5689070A High temperature electromagnetic acoustic transducer (EMAT) probe and coil assemblies 失效
标题翻译：高温电磁换能器（EMAT）探头和线圈组件
公开(公告)号：US5689070A
公开(公告)日：1997-11-18
申请号：US506413
申请日：1995-07-24
申请人： Steven P. Clark , John H. Flora , Daniel T MacLauchlan
发明人： Steven P. Clark , John H. Flora , Daniel T MacLauchlan
IPC分类号： B06B1/04 , G01N29/22 , G01N29/24 , G01N29/04
CPC分类号： G01N29/228 , B06B1/04 , G01N29/2412 , G01N2291/0422
摘要： An enhanced EMAT probe and coil construction takes advantage of heat transfer and magnetic flux principles to permit inspection of workpieces at elevated temperatures of 1200.degree. F. and higher. A ferromagnetic, cup-shaped probe assembly having an end cap and a barrel is provided for carrying a coil assembly, preferably one or more permanent magnets, and a frustoconical focus core. The magnets are located within the barrel and connected to the end cap, and the cup-shaped probe assembly positions the coil assembly proximate the surface of the workpiece. A plurality of passageways may be provided in the end cap and barrel for admitting cooling air to an interior portion of the cup-shaped probe assembly. The cup-shaped probe assembly serves to provide a return path for magnetic flux of the magnetic field back to the permanent magnet means. The coil assembly has a coil disk having a matrix of holes and grooves which allow at least one eddy current coil wire to be threaded and interwoven into the coil disk without shorting against itself. A layer of fiberglass cloth covers the coil assembly to thermally and electronically insulate it from the workpiece, providing a durable, rugged and economical construction.
摘要翻译：增强的EMAT探头和线圈结构利用传热和磁通原理，允许在1200°F以上的高温下对工件进行检查。提供具有端盖和筒体的铁磁性杯形探针组件，用于承载线圈组件，优选地一个或多个永磁体和截头圆锥形聚焦芯。磁体位于筒内并连接到端盖，并且杯状探针组件将线圈组件定位在工件的表面附近。多个通道可以设置在端盖和筒中，用于将冷却空气引入杯状探针组件的内部。杯形探针组件用于提供磁场的磁通量返回到永磁体装置的返回路径。线圈组件具有线圈盘，其具有孔和凹槽的矩阵，其允许至少一个涡流线圈线被螺纹连接并且交织到线圈盘中而不会自身短路。一层玻璃纤维布覆盖线圈组件，以使其与工件热电子和电子绝缘，从而提供耐用，坚固耐用和经济的结构。

3. 发明授权

US5684406A Electromagnetic acoustic transducer fault detection circuit 失效
标题翻译：电磁换能器故障检测电路
公开(公告)号：US5684406A
公开(公告)日：1997-11-04
申请号：US615754
申请日：1996-03-13
申请人： Daniel T. MacLauchlan , Kenneth R. Camplin , Bradley E. Cox , Daniel Geier
发明人： Daniel T. MacLauchlan , Kenneth R. Camplin , Bradley E. Cox , Daniel Geier
IPC分类号： G01R31/06 , G01R35/00
CPC分类号： G01R31/2829
摘要： A fault detecting circuit for use with an electromagnetic acoustic transducer having an electrostatic shield and a wear surface for determining when the wear surface for contacting test surfaces has developed holes.
摘要翻译：一种与具有静电屏蔽的电磁换能器一起使用的故障检测电路和用于确定何时用于接触测试表面的磨损表面已经形成空穴的磨损表面。

4. 发明授权

US5675087A Fastener characterization with an electromagnetic acoustic transducer 失效
标题翻译：紧固件表征与电磁声换能器
公开(公告)号：US5675087A
公开(公告)日：1997-10-07
申请号：US594051
申请日：1996-01-30
申请人： Daniel T. MacLauchlan , Wayne M. Latham , Steven P. Clark
发明人： Daniel T. MacLauchlan , Wayne M. Latham , Steven P. Clark
IPC分类号： G01L5/00 , F16B31/02 , G01H11/00 , G01L1/25 , G01L5/24 , G01M13/00 , G01N29/04 , G01N29/24
CPC分类号： G01L5/246 , G01L1/25 , G01N29/045 , G01N29/2412 , F16B2031/022 , G01N2291/011 , G01N2291/015 , G01N2291/02827 , G01N2291/0423 , G01N2291/044 , G01N2291/101 , G01N2291/2691 , G01N2291/2695
摘要： A device for measuring a load on a part and for monitoring the integrity of the part such as a bolt, comprises a socket having walls defining an interior space wherein the socket engages the bolt for transmitting a load to the bolt. An electromagnetic acoustic transducer comprising a magnet and a coil is located in the interior space of the socket near the bolt. The coil provides a current while the magnet provides a magnetic field such that the magnet and the coil generate an ultrasonic signal within the bolt. A detector is used to detect and measure a change in the ultrasonic signal at the bolt for measuring the load on the bolt and for detecting any flaws in the bolt.
摘要翻译：用于测量部件上的负载并用于监测诸如螺栓的部件的完整性的装置包括具有限定内部空间的壁的插座，其中插座接合用于将负载传输到螺栓的螺栓。包括磁体和线圈的电磁声换能器位于插座附近的螺栓的内部空间中。线圈提供电流，同时磁体提供磁场，使得磁体和线圈在螺栓内产生超声波信号。检测器用于检测和测量螺栓处的超声信号的变化，以测量螺栓上的负载并检测螺栓中的任何缺陷。

5. 发明授权

US5608691A EMAT with integral electrostatic shield 失效
标题翻译： EMAT带有整体静电屏蔽
公开(公告)号：US5608691A
公开(公告)日：1997-03-04
申请号：US503777
申请日：1996-07-18
申请人： Daniel T. MacLauchlan , Paul J. Latimer , Wayne M. Latham
发明人： Daniel T. MacLauchlan , Paul J. Latimer , Wayne M. Latham
IPC分类号： B06B1/04 , H04R23/00
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。

6. 发明授权

US4777824A Electromagnetic acoustic transducer 失效
标题翻译：电磁换能器
公开(公告)号：US4777824A
公开(公告)日：1988-10-18
申请号：US66772
申请日：1987-06-25
申请人： George A. Alers , Leigh R. Burns, Jr. , Daniel T. MacLauchlan
发明人： George A. Alers , Leigh R. Burns, Jr. , Daniel T. MacLauchlan
IPC分类号： B06B1/04 , G01N29/24 , G01N29/04
CPC分类号： G01N29/2412 , B06B1/04 , G01N2291/0234 , G01N2291/0423 , G01N2291/0427
摘要： A noncontact ultrasonic transducer for studying the acoustic properties of a metal workpiece includes a generally planar magnetizing coil positioned above the surface of the workpiece, and a generally planar eddy current coil between the magnetizing coil and the workpiece. When a large current is passed through the magnetizing coil, a large magnetic field is applied to the near-surface regions of the workpiece. The eddy current coil can then be operated as a transmitter by passing an alternating current therethrough to excite ultrasonic waves in the surface of the workpiece, or operated as a passive receiver to sense ultrasonic waves in the surface by measuring the output signal. The geometries of the two coils can be varied widely to be effective for different types of ultrasonic waves. The coils are preferably packaged in a housing which does not interfere with their operation, but protects them from a variety of adverse environmental conditions.
摘要翻译：用于研究金属工件的声学特性的非接触式超声换能器包括位于工件表面上方的大致平面的磁化线圈，以及位于磁化线圈和工件之间的大体平面的涡流线圈。当大电流通过磁化线圈时，大的磁场被施加到工件的近表面区域。涡流线圈然后可以通过使交流电流通过其来激发工件表面中的超声波，或者作为无源接收器操作，作为发射器，以通过测量输出信号来感测表面中的超声波。两个线圈的几何形状可以广泛地变化，以对于不同类型的超声波是有效的。线圈优选地包装在壳体中，其不干扰其操作，而是保护它们免受各种不利的环境条件的影响。

7. 发明授权

US08301401B2 Low profile encircling ultrasonic probe for the inspection of in-situ piping in immersion mode 有权
标题翻译：薄型环绕超声波探头，用于在浸入式模式下检查原位管道
公开(公告)号：US08301401B2
公开(公告)日：2012-10-30
申请号：US12873082
申请日：2010-08-31
申请人： Donald W. Morrison, Jr. , Daniel T. MacLauchlan , William C. Rutherford , Todd E. Mitton
发明人： Donald W. Morrison, Jr. , Daniel T. MacLauchlan , William C. Rutherford , Todd E. Mitton
IPC分类号： G01B17/00
CPC分类号： G01N29/265 , G01N29/262 , G01N29/28 , G01N2291/2634
摘要： An ultrasonic probe encircles the perimeter of a target component to be ultrasonically tested and has a base and a pair of jaws pivotally mounted to the base at opposite ends of an arcuate inner surface of the base to encircle a target component with arcuate inner surfaces of the jaws as well. The inner surfaces form a coupling fluid chamber with an outer surface of the target component. Front and rear sets of seals connected to and extending along front and rear portions of the arcuate inner surfaces seal the chamber so that it can retain a coupling fluid such as water. An arcuate set of ultrasonic transducers is connected along at least one but preferably all of the arcuate inner surfaces for transmitting ultrasonic signals to the coupling fluid chamber and into the target component.
摘要翻译：超声波探头环绕目标部件的周边进行超声波测试，并具有基座和一对夹爪，该基座和一对夹爪可枢转地安装在基座的弧形内表面的相对端处，以围绕目标部件，其中弧形内表面颚也是。内表面形成具有目标部件的外表面的耦合流体室。连接到弓形内表面的前部和后部并且沿弓形内表面的前部和后部延伸的前部和后部密封件密封室，使得其可以保持诸如水的耦合流体。一组超声波换能器沿着至少一个但优选全部的弓形内表面连接，用于将超声信号传输到耦合流体室并进入目标部件。

8. 发明申请

US20120053856A1 LOW PROFILE ENCIRCLING ULTRASONIC PROBE FOR THE INSPECTION OF IN-SITU PIPING IN IMMERSION MODE 有权
标题翻译：用于在浸没模式下检查现场管道的低剖面超声探头
公开(公告)号：US20120053856A1
公开(公告)日：2012-03-01
申请号：US12873082
申请日：2010-08-31
申请人： DONALD W. MORRISON, JR. , Daniel T. MacLauchlan , William C. Rutherford , Todd E. Mitton
发明人： DONALD W. MORRISON, JR. , Daniel T. MacLauchlan , William C. Rutherford , Todd E. Mitton
IPC分类号： G01N29/04
CPC分类号： G01N29/265 , G01N29/262 , G01N29/28 , G01N2291/2634
摘要： An ultrasonic probe encircles the perimeter of a target component to be ultrasonically tested and has a base and a pair of jaws pivotally mounted to the base at opposite ends of an arcuate inner surface of the base to encircle a target component with arcuate inner surfaces of the jaws as well. The inner surfaces form a coupling fluid chamber with an outer surface of the target component. Front and rear sets of seals connected to and extending along front and rear portions of the arcuate inner surfaces seal the chamber so that it can retain a coupling fluid such as water. An arcuate set of ultrasonic transducers is connected along at least one but preferably all of the arcuate inner surfaces for transmitting ultrasonic signals to the coupling fluid chamber and into the target component.
摘要翻译：超声波探头环绕目标部件的周边进行超声波测试，并具有基座和一对夹爪，该基座和一对夹爪可枢转地安装在基座的弧形内表面的相对端处，以围绕目标部件，其中弧形内表面颚也是。内表面形成具有目标部件的外表面的耦合流体室。连接到弓形内表面的前部和后部并且沿弓形内表面的前部和后部延伸的前部和后部密封件密封室，使得其可以保持诸如水的耦合流体。一组超声波换能器沿着至少一个但优选全部的弓形内表面连接，用于将超声信号传输到耦合流体室并进入目标部件。

9. 发明申请

US20110120223A1 ULTRASONIC INSPECTION METHOD 有权
标题翻译：超声波检查方法
公开(公告)号：US20110120223A1
公开(公告)日：2011-05-26
申请号：US12916748
申请日：2010-11-01
申请人： Daniel T. MacLauchlan , Bradley E. Cox
发明人： Daniel T. MacLauchlan , Bradley E. Cox
IPC分类号： G01B17/00
CPC分类号： G01N29/28 , G01N29/265 , G01N29/44 , G01N29/4463 , G01N2291/106
摘要： A method for ultrasonically inspecting components with wavy or uneven surfaces. A multi-element array ultrasonic transducer is operated with a substantial fluid layer, such as water, between the array transducer and the component surface. This fluid layer may be maintained by immersing the component in liquid or by using a captive couplant column between the probe and the component surface. The component is scanned, measuring the two dimensional surface profile using either a mechanical stylus, laser, or ultrasonic technique. Once an accurate surface profile of the component's surface has been obtained, data processing parameters are calculated for processing the ultrasonic signals reflected from the interior of the component that eliminate beam distortion effects and reflector mis-location that would otherwise occur due to the uneven surfaces.
摘要翻译：一种用于超声波检查具有波浪或不平坦表面的部件的方法。多阵列阵列超声波换能器在阵列换能器和部件表面之间用诸如水的实质流体层操作。该流体层可以通过将组分浸入液体中或通过在探针和组件表面之间使用捕获性耦合剂柱来维持。扫描组件，使用机械触针，激光或超声波技术测量二维表面轮廓。一旦已经获得了组件表面的精确表面轮廓，则计算数据处理参数，用于处理从组件内部反射的超声信号，消除由于不平坦表面而导致的波束失真效应和反射器错位。

10. 发明授权

US6164137A Electromagnetic acoustic transducer (EMAT) inspection of tubes for surface defects 有权
标题翻译：用于表面缺陷的管的电磁声换能器（EMAT）检查
公开(公告)号：US6164137A
公开(公告)日：2000-12-26
申请号：US243592
申请日：1999-02-03
申请人： Jimmy W. Hancock , Daniel T. MacLauchlan
发明人： Jimmy W. Hancock , Daniel T. MacLauchlan
IPC分类号： G01N29/07 , G01N29/24 , G01N29/08 , G01N29/28
CPC分类号： G01N29/2412 , G01N29/07 , G01N2291/015 , G01N2291/0423 , G01N2291/048 , G01N2291/103 , G01N2291/2634
摘要： An EMAT testing device for nondestructively testing tubes for surface defects and displaying the results has a EMAT transmitter arranged collinear with a pair of EMAT receivers. The EMAT receivers each receive a pair of oppositely propagating circumferential acoustic surface waves from the transmitter at different times and the relative amplitudes of the received waves are compared to located defects adjacent the receivers in the tube.
摘要翻译：用于非破坏性地测试用于表面缺陷的管和用于显示结果的EMAT测试装置具有与一对EMAT接收器共线的EMAT发射器。 EMAT接收器在不同时间接收来自发射器的一对相反传播的周向声表面波，并将接收波的相对幅度与管中的接收器相邻的定位缺陷进行比较。

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