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1. 发明授权

US4785243A Electronically scanned eddy current flaw inspection 失效
标题翻译：电子扫描涡流探伤
公开(公告)号：US4785243A
公开(公告)日：1988-11-15
申请号：US8572
申请日：1987-01-29
申请人： Richard F. Abramczyk , Steven J. Aron, Jr. , Richard M. Harris , James M. Toth
发明人： Richard F. Abramczyk , Steven J. Aron, Jr. , Richard M. Harris , James M. Toth
IPC分类号： G01N27/90
CPC分类号： G01N27/904 , G01N27/9013
摘要： Method and apparatus for performing eddy current flaw inspection on workpiece material such as steel bar stock. A drive mechanism propels a workpiece longitudinally along a workpiece path. An array of electromagnetic transmitter coils is disposed about the workpiece path. An electromagnetic source energizes the transmitter coils under control of multiplexing circuitry. The multiplexing circuitry and source actuate respective transmitter coils in a predetermined iterative sequence. The sequential actuation induces eddy currents in the workpiece at a succession of locations extending iteratively about the workpiece circumference. Circuitry coupled to multiple, differentially wound sensing coils detects variations in eddy current produced in the workpiece and utilizes these detected variations to produce flaw indicating signals.

2. 发明授权

US4673879A Eddy current flaw detector having rotatable field defining sleeve for selectively enhancing induced eddy currents in a workpiece 失效
标题翻译：涡流探伤仪具有可旋转的磁场限定套筒，用于选择性地增强工件中的感应涡流
公开(公告)号：US4673879A
公开(公告)日：1987-06-16
申请号：US625029
申请日：1984-06-27
申请人： Richard M. Harris , David A. Valek , James M. Toth , Richard F. Abramczyk
发明人： Richard M. Harris , David A. Valek , James M. Toth , Richard F. Abramczyk
IPC分类号： B21B38/00 , G01N27/90 , G01N27/82 , G01R33/12
CPC分类号： G01N27/9013 , G01N27/902 , B21B38/00
摘要： Method and apparatus for scanning a generally cylindrical workpiece for flaws. A cylindrical metallic sleeve is rotatably supported about a workpiece path of travel. Two differentially wound energization coils surround the sleeve near two apertures in the sleeve. The coils are energized with a high frequency signal that induces eddy currents in the workpiece. The apertures periodically disrupt the eddy current inducing magnetic fields and enhances signals from the coils indicative of the presence of flaws in the workpiece.
摘要翻译：用于扫描大致圆柱形工件以发现缺陷的方法和装置。圆柱形金属套筒绕工件行进路径被可旋转地支撑。两个差分缠绕的通电线圈围绕套筒中两个孔附近。线圈通过在工件中引起涡流的高频信号通电。孔径周期性地破坏涡流引起的磁场并增强来自线圈的信号，表明工件中存在缺陷。

3. 再颁专利

USRE30926E Ultrasonic inspection 失效
公开(公告)号：USRE30926E
公开(公告)日：1982-05-11
申请号：US231758
申请日：1981-02-05
申请人： Benjamin J. Ross , James M. Toth , Richard F. Abramczyk , Gerald R. Coy
发明人： Benjamin J. Ross , James M. Toth , Richard F. Abramczyk , Gerald R. Coy
IPC分类号： G01N29/26
CPC分类号： G01N29/26
摘要： An ultrasonic flaw detector for detecting irregularities in an object, such as a pipe, having a segment of annular cross-section. The detector includes a transducer with an involute transmitting surface for sending ultrasonic signals into the object at equal non-radial angles of incidence. The detector further includes transmission apparatus for maintaining a constant physical relationship between the transducer and the pipe and interpretive apparatus for correlating reflections of ultrasonic signals within the object with irregularities.

4. 发明授权

US4195530A Ultrasonic inspection 失效
标题翻译：超声波检查
公开(公告)号：US4195530A
公开(公告)日：1980-04-01
申请号：US933668
申请日：1978-08-14
申请人： Benjamin J. Ross , James M. Toth , Richard F. Abramczyk , Gerald R. Coy
发明人： Benjamin J. Ross , James M. Toth , Richard F. Abramczyk , Gerald R. Coy
IPC分类号： G01N29/26 , G01N29/04
CPC分类号： G01N29/4463 , G01N29/26 , G01N2291/0289
摘要： An ultrasonic flaw detector for detecting irregularities in an object, such as a pipe, having a segment of annular cross-section. The detector includes a transducer with an involute transmitting surface for sending ultrasonic signals into the object at equal non-radial angles of incidence. The detector further includes transmission apparatus for maintaining a constant physical relationship between the transducer and the pipe and interpretive apparatus for correlating reflections of ultrasonic signals within the object with irregularities.
摘要翻译：一种超声波探伤仪，用于检测诸如管道的物体的不规则性，其具有环形横截面。检测器包括具有渐开线传递表面的传感器，用于以相等的非径向入射角将超声信号发送到物体中。检测器还包括用于保持换能器和管之间的恒定物理关系的传输装置和用于使物体内的超声信号的反射与不规则相关的解释装置。

5. 发明授权

US4644271A Method and apparatus for examining a workpiece 失效
标题翻译：检查工件的方法和装置
公开(公告)号：US4644271A
公开(公告)日：1987-02-17
申请号：US705149
申请日：1985-02-25
申请人： James M. Toth , Richard M. Harris
发明人： James M. Toth , Richard M. Harris
IPC分类号： G01B7/00 , G01B7/28 , G01N27/90 , G01N27/82
CPC分类号： G01N27/9046
摘要： An eddy current inspector for imaging of a workpiece shape. A differentially wound test coil mounted next to a workpiece path of travel is energized with a time varying signal to set up eddy currents in the workpiece. A field modifying sleeve is rotated with the field to periodically disrupt the eddy current inducing field. Two signals from the coil, a flaw signal and a shape signal, are time multiplexed and scaled to present a real time image of a workpiece surface as well as the orientation and severity of flaws existing at the workpiece surface.
摘要翻译：用于成像工件形状的涡流检测器。安装在工件行进路径上的差动绕组的测试线圈用时变信号通电以在工件中设置涡流。场修改套筒与场一起旋转以周期性地扰乱涡流感应场。来自线圈的两个信号，缺陷信号和形状信号被时间复用和缩放以呈现工件表面的实时图像以及存在于工件表面处的缺陷的取向和严重性。

6. 发明授权

US4355281A Eddy current surface flaw detection employing signal correlation 失效
标题翻译：使用信号相关的涡流表面探伤
公开(公告)号：US4355281A
公开(公告)日：1982-10-19
申请号：US66387
申请日：1979-08-14
申请人： James M. Toth , Tyler W. Judd
发明人： James M. Toth , Tyler W. Judd
IPC分类号： G01N27/90 , G01N27/72 , G01N27/82 , G01R33/12
CPC分类号： G01N27/9046 , G01N27/904
摘要： An eddy current flaw detection system for inspecting a workpiece for surface flaws is described. The system has a search unit for mounting a pair of eddy current search coils in close proximity to a workpiece at locations which are longitudinally spaced with respect to the workpiece. The system is disclosed in the environment of a workpiece support and transport mechanism which causes a workpiece to rotate and move axially with respect to the search unit.Coil energizing and detection circuitry is provided having a pair of eddy current channels. Each channel energizes a connected one of the search coils to induce eddy currents within a workpiece at slightly different energization frequencies. Each channel has an output for producing signals indicating the presence and severity of detected flaws. The coil energization at different frequencies results in each coil responding to self induced eddy currents rather than currents induced by the other of the two coils.Processing circuitry is provided having a pair of inputs each connected to a respective eddy current channel output. The processing circuitry algebraically multiplies concurrently received eddy current channel output signals to produce a resultant signal. The disclosed signal correlation circuitry will not process a signal from a single coil. Accordingly, the axial separation of the search coils establishes a minimum length of surface flaw which will be detected. The value of the resultant signal indicates the severity of the detected surface flaw.
摘要翻译：描述了用于检查工件表面缺陷的涡流探伤系统。该系统具有搜索单元，用于在相对于工件纵向间隔开的位置处将一对涡流搜索线圈安装在工件附近。该系统在工件支撑和运输机构的环境中被公开，其使工件相对于搜索单元旋转并且轴向移动。提供具有一对涡流通道的线圈通电和检测电路。每个通道激励连接的一个搜索线圈，以在稍微不同的通电频率下在工件内感应涡流。每个通道具有用于产生指示检测到的缺陷的存在和严重性的信号的输出。不同频率的线圈通电导致每个线圈响应于自感应涡流，而不是由两个线圈中的另一个引起的电流。提供具有一对输入的处理电路，每个输入连接到相应的涡流通道输出。处理电路代数地乘以并行接收的涡流通道输出信号以产生合成信号。所公开的信号相关电路将不处理来自单个线圈的信号。因此，搜索线圈的轴向分离建立将被检测到的表面缺陷的最小长度。所得信号的值表示检测到的表面缺陷的严重性。

7. 发明授权

US4288164A Method and apparatus for viewing glowing objects 失效
标题翻译：查看发光物体的方法和装置
公开(公告)号：US4288164A
公开(公告)日：1981-09-08
申请号：US59025
申请日：1979-07-19
申请人： James M. Toth
发明人： James M. Toth
IPC分类号： B07C5/34 , G01N21/88 , G01N21/55 , B07C5/342 , G05D25/00
CPC分类号： B07C5/3412 , G01N21/88
摘要： A method for viewing a glowing steel body such as a billet for flaw inspection or identification. The process identification includes the step of providing identifying indicia on a surface of the billet. The billet is viewed by illuminating the billet with a source of bright light to create shadows so that the indicia or flaws can be seen, and viewing the billet from behind a protective device which permits intermittent viewing of the object. Apparatus for carrying out the method includes a shutter by which the light emitted by the billet is attenuated. The shutter employs a pair of rotatable disks having spaced, parallel axes of rotation and the disks are overlapped near their peripheries. Each disk includes a viewing opening disposed near its periphery. When the disks are rotated in the same direction and at different angular speeds, the viewing openings periodically are aligned for short periods of time. The apparatus also includes a pulsed light source having a xenon flash lamp connected across capacitors. The shutter includes a timing mechanism so that the lamp is flashed when the shutter permits viewing of the object.
摘要翻译：一种用于观察发光钢体（例如坯料）以进行缺陷检查或识别的方法。过程识别包括在坯料的表面上提供识别标记的步骤。通过用明亮的光源照射坯料来观察钢坯，以产生阴影，从而可以看到标记或缺陷，并从允许间歇观察物体的保护装置后面观察钢坯。用于执行该方法的装置包括一个快门，通过该挡板使坯料发射的光被衰减。快门采用一对具有间隔开的平行旋转轴的可旋转盘，并且盘在其周边附近重叠。每个盘包括靠近其周边设置的观察开口。当盘以相同的方向和不同的角速度旋转时，观察开口周期性地对准短时间。该装置还包括具有连接在电容器两端的氙闪光灯的脉冲光源。快门包括定时机构，使得当快门允许观看对象时，灯被闪烁。

8. 发明授权

US4472681A Workpiece defect severity classifier with timing circuit to divide workpiece into equal inspection quadrants 失效
标题翻译：工件缺陷严重性分类器，具有定时电路，将工件分成等同的检查象限
公开(公告)号：US4472681A
公开(公告)日：1984-09-18
申请号：US406125
申请日：1982-08-09
申请人： James M. Toth
发明人： James M. Toth
IPC分类号： B07C5/34 , G01N27/90 , G01N27/72 , G01R33/12
CPC分类号： B07C5/3412 , G01N27/9046
摘要： A workpiece 18 classifying and marking system 10 is disclosed. The system includes a probe 12 for generating signals in response to the detection of defects along the workpiece length as that workpiece rotates and traverses past the probe 12. Circuitry coupled to the test head analyzes defects according to severity and classifies the workpiece as either "good", "salvageable", or "scrap". The circuitry also causes a marker 14 to affix a flaw indicating mark to the workpiece at the flaw location.The circuitry includes a flaw detection circuit 60, a defect classifying circuit 72, a timing control circuit 70, and a marker delay circuit 74. The timing control 70 transmits timing signals of different frequency to the defect classifying 72 and marker control 74 circuits and coordinates their operation. The defect classify circuit 72 divides the workpiece into quadrants and can sense the length of any flaws in each quadrant as the workpiece passes the probe 12. The detection of a flaw causes the timing control circuit to resynchronize itself by centering the flaw within a workpiece quadrant thereby preventing the flaw from "wandering" out of the quadrant. The circuitry is controllable by the user to change workpiece classification as a function of the use to which the workpiece is to be put.
摘要翻译：公开了一种分类和标记系统10的工件18。该系统包括用于响应于当工件旋转并穿过探针12时沿着工件长度的缺陷的检测来产生信号的探针12.耦合到测试头的电路根据严重性分析缺陷并将工件分类为“良好 “，”可救“或”废“。电路还使得标记14在缺陷位置处将缺陷指示标记附着到工件。电路包括缺陷检测电路60，缺陷分类电路72，定时控制电路70和标记延迟电路74.定时控制器70将不同频率的定时信号发送到缺陷分类72和标记控制74电路和坐标他们的操作。缺陷分类电路72将工件划分成象限，并且可以在工件通过探针12时感测每个象限中的任何缺陷的长度。缺陷的检测使定时控制电路通过将工件象限内的缺陷居中对准来自动重新同步从而防止缺陷从象限中“徘徊”。电路可由用户控制，以根据工件的放置用途来改变工件分类。

9. 发明授权

US4365198A Method and apparatus for detecting, classifying and marking defects in workpiece with improved timing control 失效
标题翻译：用于通过改进的时序控制来检测，分类和标记工件中的缺陷的方法和装置
公开(公告)号：US4365198A
公开(公告)日：1982-12-21
申请号：US127579
申请日：1980-03-06
申请人： James M. Toth
发明人： James M. Toth
IPC分类号： B07C5/34 , G01N27/90 , G01N27/72 , G01R33/00
CPC分类号： B07C5/3412 , G01N27/9046
摘要： A workpiece 18 classifying and marking system 10 is disclosed. The system includes a probe 12 for generating signals in response to the detection of defects along the workpiece length as that workpiece rotates and traverses past the probe 12. Circuitry coupled to the test head analyzes defects according to severity and classifies the workpiece as either "good", "salvageable", or "scrap". The circuitry also causes a marker 14 to affix a flaw indicating mark to the workpiece at the flaw location.The circuitry includes a flaw detection circuit 60, a defect classifying circuit 72, a timing control circuit 70, and a marker delay circuit 74. The timing control 70 transmits timing signals of different frequency to the defect classifying 72 and marker control 74 circuits and coordinates their operation. The defect classify circuit 72 divides the workpiece into quadrants and can sense the length of any flaws in each quadrant as the workpiece passes the probe 12. The detection of a flaw causes the timing control circuit to resynchronize itself by centering the flaw within a workpiece quadrant thereby preventing the flaw from "wandering" out of the quadrant. The circuitry is controllable by the user to change workpiece classification as a function of the use to which the workpiece is to be put.
摘要翻译：公开了一种分类和标记系统10的工件18。该系统包括用于响应于当工件旋转并穿过探针12时沿着工件长度的缺陷的检测来产生信号的探针12.耦合到测试头的电路根据严重性分析缺陷并将工件分类为“良好 “，”可救“或”废“。电路还使得标记14在缺陷位置处将缺陷指示标记附着到工件。电路包括缺陷检测电路60，缺陷分类电路72，定时控制电路70和标记延迟电路74.定时控制器70将不同频率的定时信号发送到缺陷分类72和标记控制74电路和坐标他们的操作。缺陷分类电路72将工件划分成象限，并且可以在工件通过探针12时感测每个象限中的任何缺陷的长度。缺陷的检测使定时控制电路通过将工件象限内的缺陷居中对准来自动重新同步从而防止缺陷从象限中“徘徊”。电路可由用户控制，以根据工件的放置用途来改变工件分类。

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