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1. 发明授权

US5418823A Combined ultrasonic and eddy-current method and apparatus for non-destructive testing of tubular objects to determine thickness of metallic linings or coatings 失效
标题翻译：组合超声波和涡流方法和装置用于管状物体的非破坏性测试，以确定金属衬里或涂层的厚度
公开(公告)号：US5418823A
公开(公告)日：1995-05-23
申请号：US177023
申请日：1994-01-04
申请人： John A. Kervinen , Kurt D. Ellis
发明人： John A. Kervinen , Kurt D. Ellis
IPC分类号： G01B7/00 , G01B7/06 , G01B17/00 , G01B17/02 , G01B21/08 , G21C3/20 , G21C17/06 , G21C17/00
CPC分类号： G01B17/025 , G01B7/105 , G21C17/06 , G21Y2002/204 , G21Y2004/30 , G21Y2004/403
摘要： A combined ultrasonic and eddy-current method and apparatus for non-destructively determining the liner thickness of a zirconium liner provided at the inner surface of a zirconium alloy nuclear fuel rod tube utilizes dimensional data acquired via conventional ultrasonic measurement techniques and impedance data acquired through electromagnetic techniques to calculate liner thickness in accordance with a specific formula. The apparatus utilizes a computer or programmable arithmetic unit with associated memory and I/O devices connected to electromagnetic and ultrasonic measurement subsystems. A particular eddy-current probe arrangement consisting of a differential coil pair is employed to obtain impedance measurements from the outside of the cladding tube. Calibrated reference impedance values for various different inner and outer tube diameters having a constant liner thickness are measured and retained in a memory. Calibrated reference impedance values for tubes of various liner thicknesses with the same inside and outside diameter dimensions are also measured and stored. A specimen cladding tube is tested and an inside diameter is computed using conventional electromagnetic techniques. The specimen tube inside diameter is also measured ultrasonically and a specific calculation of liner thickness is performed based on the difference between the inside diameter as determined by ultrasonic technique and the inside diameter as measured by eddy-current technique. The specific method of calculation utilized corrects for the erroneous effect that variations in cladding tube liner thickness can have on dimensions computed via conventional electromagnetic eddy-current techniques alone.
摘要翻译：用于非破坏性地确定在锆合金核燃料棒管的内表面处设置的锆衬套的衬套厚度的组合的超声波和涡流方法和装置利用通过常规超声波测量技术获得的尺寸数据和通过电磁获取的阻抗数据根据具体公式计算衬套厚度的技术。该设备利用具有连接到电磁和超声测量子系统的相关联的存储器和I / O设备的计算机或可编程运算单元。采用由差分线圈对组成的特定的涡流探针装置，从包层管的外部获得阻抗测量值。测量具有恒定衬垫厚度的各种不同内管和外管直径的校准参考阻抗值并保留在存储器中。也测量和存储具有相同内径和外径尺寸的各种衬垫厚度的管的校准参考阻抗值。测试样品包层管，并使用常规电磁技术计算内径。试样管内径也被超声波测量，并且基于通过超声波技术确定的内径与通过涡流技术测量的内径之间的差异来执行衬垫厚度的具体计算。具体的计算方法利用了通过常规电磁涡流技术计算出的包层管衬套厚度的变化可能产生的尺寸误差的错误效果。

2. 发明授权

US5377236A Method and apparatus for measuring rod end squareness 失效
标题翻译：测量杆端矩形度的方法和装置
公开(公告)号：US5377236A
公开(公告)日：1994-12-27
申请号：US46291
申请日：1993-04-15
申请人： David G. Smith , Kurt D. Ellis , Harold B. King, Jr. , David K. Underwood
发明人： David G. Smith , Kurt D. Ellis , Harold B. King, Jr. , David K. Underwood
IPC分类号： G01B5/24 , G21C21/00 , G21C21/02 , G21C17/00
CPC分类号： G21C21/00 , G21Y2002/303 , G21Y2004/403
摘要： A method and apparatus measure squareness of an end of a rod relative to a longitudinal centerline axis thereof without requiring rotation of the rod. The apparatus includes a flat plate mounted substantially perpendicularly to the rod centerline axis. The method positions the plate in abutting contact with the rod end, and a tilt angle of the plate in abutting contact with the rod end is measured for determining squareness of the rod end.
摘要翻译：方法和装置测量杆的端部相对于其纵向中心线轴线的方位角而不需要旋转杆。该装置包括基本上垂直于杆中心线轴线安装的平板。该方法使板与棒端部抵接接触，并且测量与棒端部抵接的板的倾斜角度，以确定杆端的矩形度。

3. 发明授权

US5101366A Method for controlling the manufacture of zirconium tubes 失效
标题翻译：控制锆管制造的方法
公开(公告)号：US5101366A
公开(公告)日：1992-03-31
申请号：US451665
申请日：1989-12-18
申请人： Michael K. Cueman , Frederick C. Schoenig, Jr. , Kurt D. Ellis , James D. Landry
发明人： Michael K. Cueman , Frederick C. Schoenig, Jr. , Kurt D. Ellis , James D. Landry
IPC分类号： B21B21/00 , G01N27/90 , G01N29/00 , G01N29/04
CPC分类号： G01N29/048 , G01N27/9026 , B21B21/005 , Y10T29/53022
摘要： A method for operating a computer to control the manufacture process of zirconium tubes in a pilger mill operation, the computer including an electronic memory and being coupled to the pilger mill to receive, as input, data related to the operation of the mill. The method comprising, in one embodiment, the steps of storing in the computer memory respective test signals, each test signal corresponding to a signal obtained by inspecting a tube manufactured by the mill with a respective, known defective operation condition, inspecting a zirconium tube finished by the manufacture process and generating a signal representative of the physical dimensions and material configuration of the tube, comparing the generated representative signal of the zirconium tube with the stored test signals, alerting an operator if the generated representative signal of the zirconium tube correlates to a stored test signal, and identifying the defective operation condition which corresponds to the correlated stored test signal.
摘要翻译：一种用于操作计算机以控制打包机操作中的锆管的制造过程的方法，所述计算机包括电子存储器并且耦合到所述打孔机以接收与所述研磨机的操作有关的数据作为输入。在一个实施例中，该方法包括以下步骤：在计算机存储器中存储相应的测试信号，每个测试信号对应于通过用相应的已知缺陷操作条件检查由研磨机制造的管获得的信号，检查完成的锆管通过制造过程并产生代表管的物理尺寸和材料构造的信号，将锆管的生成的代表信号与存储的测试信号进行比较，如果锆管的产生的代表信号与一个存储测试信号，以及识别与相关的存储的测试信号相对应的故障操作条件。

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