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1. 发明授权

US06810743B2 Non-destructive evaluation of wire insulation and coatings 失效
标题翻译：电线绝缘和涂层的无损评估
公开(公告)号：US06810743B2
公开(公告)日：2004-11-02
申请号：US10212563
申请日：2002-08-01
申请人： Eric I. Madaras , Robert F. Anastasi
发明人： Eric I. Madaras , Robert F. Anastasi
IPC分类号： G01N2908
CPC分类号： G01R31/1272 , G01N29/045 , G01N29/07 , G01N29/11 , G01N29/2418 , G01N2291/0231 , G01N2291/02827 , G01N2291/0421 , G01N2291/048 , G01N2291/102 , G01N2291/103 , G01N2291/2626 , G01R31/021
摘要： The present invention uses the generation and detection of acoustic guided waves to evaluate the condition of the insulation on electrical wiring. Low order axisymmetric and flexural acoustic modes are generated in the insulated wire and travel partially in the center conductor and partially in the outer insulation. The stiffness of the insulation and the insulation's condition affect the overall wave speed and amplitude of the guided wave. Analysis of the received signal provides information about the age or useful life of the wire insulation. In accordance with the present invention, signal transmission occurs at one location on the electrical wire to be evaluated, and detection occurs at one or more locations along the electrical wire. Additional receivers can be used to improve measurement accuracy. Either the transmission transducer or one or more receiver transducers may be angled at other than 90 degrees to the wire. Generation of the guided waves can be accomplished by imparting a pressure pulse on the wire. Alternative embodiments include generation via a laser, such as a Q-switched laser or a laser diode.

2. 发明授权

US5280722A Method and apparatus for indicating disbonds in joint regions 失效
标题翻译：指示接合区域脱粘的方法和装置
公开(公告)号：US5280722A
公开(公告)日：1994-01-25
申请号：US751489
申请日：1991-08-29
申请人： Eric I. Madaras
发明人： Eric I. Madaras
IPC分类号： G01N29/28 , G01N29/10
CPC分类号： G01N29/28 , G01N2291/0231 , G01N2291/044 , G01N2291/101 , G01N2291/102 , G01N2291/269
摘要： A method and apparatus are provided for indicating disbonds in joint regions. A critical bondline region is located between a first material and a second material having a higher acoustic impedance than the first material. A form member having an acoustic impedance which is substantially similar to the first material has a first face which is form fitted to a surface of the first material opposite to and non-parallel with the critical bondline region. The form member has an opposite second face which is shaped to be parallel to the critcal bondline region. Transducers are acoustically coupled to the second face of the form member to generate an ultrasonic tone burst through the acoustically similar form member and first material which is reflected by the critical bondline region. This reflected tone burst is received and a resulting signal is compared with a normal signal for no disbond to determine the presence of an unacceptable disbond.
摘要翻译：提供了一种用于指示接合区域中的脱离的方法和装置。临界粘合区域位于具有比第一材料更高的声阻抗的第一材料和第二材料之间。具有与第一材料基本相似的声阻抗的形状构件具有第一面，该第一面与第一材料的与临界粘合线区域相反并且不平行的表面配合。形成部件具有相对的第二面，该第二面被成形为平行于临界粘合线区域。传感器声耦合到形式构件的第二面，以通过声学上相似的形状构件和被临界粘结区域反射的第一材料产生超声波脉冲。接收该反射的音调脉冲串，并将所得到的信号与正常信号进行比较，以便不解散，以确定是否存在不可接受的离散。

3. 发明授权

US5691476A Method for ultrasonic imaging and device for performing the method 失效
标题翻译：超声波成像方法及其执行方法
公开(公告)号：US5691476A
公开(公告)日：1997-11-25
申请号：US585087
申请日：1996-01-12
申请人： Eric I. Madaras
发明人： Eric I. Madaras
IPC分类号： A61B8/00 , G01N29/24 , G01N29/28 , G10K11/02 , G01N29/04
CPC分类号： G01N29/28 , A61B8/4281 , A61B8/4483 , G01N29/2462 , G10K11/02 , A61B5/0051 , A61B8/485 , G01N2291/0422
摘要： A method for ultrasonic imaging of interior structures and flaws in a test specimen with a smooth or irregular contact surfaces, in which an ultrasonic transducer is coupled acoustically to the contact surface via a plurality of ultrasonic wave guides with equal delay times. The wave guides are thin and bendable, so they adapt to variations in the distance between the transducer and different parts of the contact surface by bending more or less. All parts of the irregular contact surface accordingly receive sound waves that are in phase, even when the contact surface is irregular, so a coherent sound wave is infused in the test specimen. The wave guides can be arranged in the form of an ultrasonic brush, with a flat head for coupling to a flat transducer, and free bristles that can be pressed against the test specimen. By bevelling the bristle ends at a suitable angle, shear mode waves can be infused into the test specimen from a longitudinal mode transducer.
摘要翻译：一种用于具有平滑或不规则接触表面的测试样品中的内部结构的超声成像和瑕疵的方法，其中超声换能器经由多个具有相等延迟时间的超声波引导器与接触表面耦合。波导是薄且可弯曲的，因此它们通过弯曲或多或少地适应变换器与接触表面的不同部分之间的距离的变化。不规则接触表面的所有部分因此接收同相的声波，即使接触表面是不规则的，因此在测试样本中注入相干声波。波导可以以超声波刷的形式布置，平头用于连接到平面换能器，以及可以压靠测试样本的自由刷毛。通过将刷毛以适当的角度倾斜，剪切模式波可以从纵向模式传感器输入到试样中。

4. 发明授权

US5115673A Non-destructive method for determining elastic moduli of material 失效
标题翻译：用于确定材料弹性模量的非破坏性方法
公开(公告)号：US5115673A
公开(公告)日：1992-05-26
申请号：US556584
申请日：1990-07-20
申请人： Ronald A. Kline , Eric I. Madaras
发明人： Ronald A. Kline , Eric I. Madaras
IPC分类号： G01N3/00 , G01N9/24 , G01N29/07 , G01N29/24 , G01N29/44
CPC分类号： G01N9/24 , G01N29/07 , G01N29/2431 , G01N29/4472 , G01N2203/0005 , G01N2291/02818 , G01N2291/02827 , G01N2291/0421 , G01N2291/0422 , G01N2291/0428
摘要： A non-destructive method for determining elastic moduli of isotropic or anisotropic or homogeneous or nonhomogeneous material. The material is subjected to x-radiation for determining the density of the material at a sufficient number of discrete measurement points over the material to create an image of local material density variation. Ultrasonic waves are propagated through the material to determine transit times for each wave at points corresponding to the measurement points. Using the determined density and transit times for each of the measurement points, the elastic moduli at each measurement point is determined. The elastic moduli provides a means for analyzing the mechanical performance of the material. In one aspect, the determined elastic moduli are inputted into a finite element method code for determining mechanical response of the material.
摘要翻译：用于确定各向同性或各向异性或均匀或非均质材料的弹性模量的非破坏性方法。材料经受x辐射以在材料上的足够数量的离散测量点处确定材料的密度，以产生局部材料密度变化的图像。超声波通过材料传播，以确定对应于测量点的点处的每个波的传播时间。使用确定的每个测量点的密度和传送时间，确定每个测量点处的弹性模量。弹性模量提供了一种用于分析材料的机械性能的方法。在一个方面，将确定的弹性模量输入到用于确定材料的机械响应的有限元方法代码中。

5. 发明授权

US5483571A Radiographic moire 失效
标题翻译：射线波纹
公开(公告)号：US5483571A
公开(公告)日：1996-01-09
申请号：US251434
申请日：1994-05-31
申请人： Eric I. Madaras
发明人： Eric I. Madaras
IPC分类号： G01B15/06 , G01N23/04 , G21K1/00
CPC分类号： G01N23/04 , G01B15/06
摘要： A method for the x-ray inspection of materials making use of the Moire effect is described. The Moire effect results when two patterns are superimposed, a third pattern is produced. Any change in either of the first two patterns creates a change in the third. Moire inspection is common with visible light, this invention allows the technique to be extended to locations inaccessible to visual inspection. A first pattern of high radio contrast material is attached to or included in the sample. X-rays are projected through the sample. A second pattern is imposed at the observation point, either before or after the formation of the x-ray image. The two patterns interact to create a third, Moire, pattern. As the material is stressed the Moire pattern changes, the degree of change indicating the degree of stress.
摘要翻译：描述了利用莫尔效应进行X射线检查的材料的方法。当叠加两个图案时，产生莫尔效应，产生第三图案。前两种模式中的任一种的任何变化都会在第三种模式中产生变化。莫尔条纹检查对于可见光是常见的，本发明允许将该技术扩展到无法进行视觉检查的位置。高无线电对比材料的第一种图案附于或包含在样品中。 X射线投射通过样品。在X射线图像的形成之前或之后，在观察点施加第二图案。这两种模式相互作用，创造出第三种，莫尔模式。由于材料的应力莫尔条纹发生变化，变化程度表明应力程度。

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