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公开(公告)号：US6125706A
公开(公告)日：2000-10-03
申请号：US898851
申请日：1997-07-25
Applicant: Jonathan D. Buttram , John H. Flora
Inventor： Jonathan D. Buttram , John H. Flora
CPC classification number: G01N29/42 , B06B1/045 , G01N29/228 , G01N29/2412 , G01N2291/0422 , G01N2291/0423 , G01N2291/0427
Abstract: 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.
Abstract translation: 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。
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2.发明授权Crack orientation determination and detection using horizontally polarized shear waves 失效使用水平偏振剪切波的裂纹取向确定和检测
公开(公告)号：US5383365A
公开(公告)日：1995-01-24
申请号：US947123
申请日：1992-09-17
Applicant: Jonathan D. Buttram
Inventor： Jonathan D. Buttram
CPC classification number: G01N29/043 , G01N2291/0421 , G01N2291/0422 , G01N2291/044 , G01N2291/101
Abstract: The presence of a crack in a material and the orientation of the crack is determined by placing a transducer on the surface of the material for propagating a shear wave for reflection off of the back wall of the material. The reflected signal is evaluated such that no signal or a weak signal indicates the presence of a crack. The transducer is then held in place and rotated while propagating a shear wave in order to determine the orientation of the crack. The reflected shear wave is then evaluated in the same manner.
Abstract translation: 通过在材料的表面上放置换能器以传播用于从材料的后壁反射的剪切波来确定材料中裂纹的存在和裂纹的取向。 评估反射信号，使得没有信号或弱信号指示存在裂纹。 然后将传感器保持就位并在传播剪切波的同时旋转，以确定裂纹的取向。 然后以相同的方式评估反射的剪切波。
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公开(公告)号：US06769957B2
公开(公告)日：2004-08-03
申请号：US09896504
申请日：2001-06-29
Applicant: Jonathan D. Buttram
Inventor： Jonathan D. Buttram
IPC: B24B4900
CPC classification number: B24B49/10 , B21B28/02 , B24B5/167 , G01N29/043 , G01N29/28 , G01N2291/0421 , G01N2291/0422 , G01N2291/044 , G01N2291/2626 , Y10S451/91
Abstract: A method and apparatus for simultaneously inspecting and grinding roll mills which utilizes a transducer assembly which produces a creeping wave propagation in conjunction with a couplant fluid provider and data acquisition circuit which allows the operator to see the crack and imperfections in on the surface of the mill rolls as they are rotated and to grind them off.
Abstract translation: 一种用于同时检查和研磨辊磨机的方法和装置，其利用换能器组件，其与耦合剂流体提供器和数据采集电路一起产生蠕变波传播，其允许操作者看到磨机表面上的裂纹和缺陷 卷轴旋转并将其磨碎。
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公开(公告)号：US5092176A
公开(公告)日：1992-03-03
申请号：US546283
申请日：1990-06-29
Applicant: Jonathan D. Buttram , William E. Lawrie , Daniel M. Schlader
Inventor： Jonathan D. Buttram , William E. Lawrie , Daniel M. Schlader
CPC classification number: G01N29/11 , G01N9/24 , G01N2291/0231 , G01N2291/02818 , G01N2291/0422 , G01N2291/101 , G01N2291/2634
Abstract: A method of determining low density deposits on the inner surface of a boiler tube comprises the generation of ultrasonic energy which is directed from the outer surface of the tube to the inner surface of the tube. The energy is reflected back and forth between the inner and outer surfaces with each reflection of the inner surface loosing energy by attenuation into any existing low density deposit. The first and fourth reflections are measured and digitized for analysis to determine the amount of attenuation. The amount of attenuation is representative of the low density deposit on the inner surface of the tube. The tube is preferably empty of water to avoid transmission of ultrasonic energy through water in the tube.
Abstract translation: 确定锅炉管内表面上的低密度沉积物的方法包括从管的外表面引导到管的内表面的超声能量的产生。 能量在内表面和外表面之间来回反射，内表面的每个反射通过衰减成任何现有的低密度沉积物而失去能量。 测量第一和第四反射并数字化以进行分析以确定衰减量。 衰减量代表管内表面上的低密度沉积物。 管优选为空的水，以避免超声能量通过管中的水传播。
