-
1.发明授权
公开(公告)号：US5519225A
公开(公告)日：1996-05-21
申请号：US317049
申请日：1994-10-03
摘要： A system and method for using the detector to differentiate neutron attenuating material from high x-ray attenuating material in an object. The inspection system is used to detect the presence of nitride in titanium sponge nuggets or residual core material in a hollow-cast turbine engine blades. The inspection system uses a dual radiation source to alternately emit neutrons and x-rays or gamma rays at the object under inspection. A dual modality gas ionization detector detects the radiation passing through the object and sends the detected radiation to a processing means for image generation. The generated image is displayed on a display, enabling objects formed with low and high attenuating material to be distinguished.
摘要翻译： 一种使用该检测器将中子衰减材料与物体中的高X射线衰减材料区分开的系统和方法。 检查系统用于检测中空铸造涡轮发动机叶片中的钛海绵块或残留芯材中的氮化物的存在。 检查系统使用双重辐射源在被检查物体上交替发射中子和X射线或γ射线。 双模式气体电离检测器检测通过物体的辐射，并将检测到的辐射发送到用于图像产生的处理装置。 生成的图像被显示在显示器上，使得能够区分由低和高衰减材料形成的物体。
-
公开(公告)号：US5489781A
公开(公告)日：1996-02-06
申请号：US317051
申请日：1994-10-03
摘要： A dual modality gas ionization detector for differentiating neutron attenuating material from high x-ray attenuating material in an object. The dual modality gas ionization detector uses .sup.3 He and Xe gases pressurized in an ionization chamber to detect neutrons x-rays or gamma rays. The dual modality gas ionization detector is used in an inspection system for detecting, characterizing, or differentiating small amounts of neutron attenuating materials in objects composed primarily of materials of large attenuating x-ray material.
摘要翻译： 一种用于将中子衰减材料与物体中的高x射线衰减材料区分开的双重模态气体电离检测器。 双模式气体电离检测器使用在电离室中加压的3He和Xe气体来检测中子的X射线或γ射线。 双重模式气体电离检测器用于检测，表征或微分主要由大衰减X射线材料的材料组成的物体中的少量中子衰减材料的检测系统。
-
3.发明授权Method for ultrasonic evaluation of materials using time of flight measurements 失效使用飞行时间测量的材料超声波评估方法
公开(公告)号：US5631424A
公开(公告)日：1997-05-20
申请号：US509679
申请日：1995-07-31
CPC分类号： G01N29/40 , G01N29/0609 , G01N29/0681 , G01N29/07 , G01N29/2456 , G01N29/341 , G01N2291/011 , G01N2291/015
摘要： A nondestructive evaluation method is described for ultrasonic evaluation and detection of features in polycrystalline materials, such as grain orientation (e.g. texturing) or grain boundary orientation. The method may, for example, be employed to detect diffusion bonds that contain undesirable planar grain boundary arrays. The method utilizes time of flight statistics gathered from reflections associated with incident ultrasonic signals directed into a plurality of locations within the material.
摘要翻译： 描述了用于超声评估和多晶材料中的特征的检测的非破坏性评估方法，例如晶粒取向（例如纹理）或晶界取向。 该方法可以例如用于检测包含不期望的平面晶界阵列的扩散键。 该方法利用从引导到材料内的多个位置的入射超声信号相关联的反射收集的飞行时间统计数据。
-
4.发明授权
公开(公告)号：US4921415A
公开(公告)日：1990-05-01
申请号：US272358
申请日：1988-11-15
IPC分类号： B06B1/06 , B29C70/54 , G10K11/00 , H01L41/053
CPC分类号： B06B1/067 , B29C70/54 , G01N29/2475 , G10K11/004 , H01L41/053 , G01N2291/0251 , G01N2291/0421 , G01N2291/0422
摘要： An apparatus for monitoring the curing of a fiber reinforced composite plastic which is cured at temperatures of the order of 350.degree. C. and an ultrasonic transducer assembly useful in the apparatus. The transducer assembly comprises a lithium niobate piezoelectric element having anisotropic coefficients of thermal expansion which is mounted on a metal base of the transducer assembly by means of a layer of structured copper. The structured copper is thermo-compression diffusion bonded to the lithium niobate element and to the metal base, and is compliant in a transverse direction to compensate for differential thermal expansions while affording good electrical and thermal conductivity and good acoustic coupling between the lithium niobate element and metal base.
摘要翻译： 一种用于监测在350℃温度下固化的纤维增强复合塑料的固化的装置和在该装置中有用的超声换能器组件。 换能器组件包括具有各向异性热膨胀系数的铌酸锂压电元件，其通过结构化铜层安装在换能器组件的金属基座上。 结构化铜是热压缩扩散结合到铌酸锂元素和金属基底上，并且在横向方向上是柔性的，以补偿不同的热膨胀，同时提供良好的导电性和导热性，以及铌酸锂元素与铌酸锂元素之间良好的声耦合 金属底座。
-
5.发明授权Method for improving waveform digitization and circuit for implementing said method 失效改进波形数字化方法和实现所述方法的电路
公开(公告)号：US5568144A
公开(公告)日：1996-10-22
申请号：US348011
申请日：1994-12-01
IPC分类号： H03M1/18
CPC分类号： H03M1/186
摘要： A method and circuit for improved digitization of waveforms having a large dynamic range, including selecting a signal threshold value which partitions the dynamic range of the waveform into a small signal region and a large signal region; sampling the waveform to obtain a sampled signal therefrom at a given sampling frequency; for each sampled signal, comparing the sampled signal with the signal threshold value to determine whether the sampled signal is within the small signal region or the large signal region; and directly digitizing the sampled signal if the sampled signal is within the small signal region or differentially digitizing the sampled signal if the sampled signal is within the large signal region, wherein differentially digitizing the sampled signal includes digitizing a value representing the difference between the sampled signal at a present sampling instant and a previous sampling instant. One bit of each word of the digitized signal is reallocated to indicate whether it represents a directly or differentially digitized signal to enable the waveform to be digitally reconstructed in a data processing device.
摘要翻译： 一种用于改进具有大动态范围的波形数字化的方法和电路，包括选择将波形的动态范围分成小信号区域和大信号区域的信号阈值; 以给定的采样频率对波形进行采样以获得采样信号; 对于每个采样信号，将采样信号与信号阈值进行比较，以确定采样信号是在小信号区域还是在大信号区域内; 如果采样信号在小信号区域内，则采样信号直接数字化，或者如果采样信号在大信号区域内差分数字化采样信号，则采样信号的差分数字化包括数字化表示采样信号之间的差值 在当前采样时刻和之前的采样时刻。 数字化信号的每个字的一位被重新分配以指示其是否表示直接或差分数字化的信号，以使波形能够在数据处理装置中进行数字重建。
-
6.发明授权Eddy current surface inspection probe for aircraft fastener inspection, and inspection method 失效用于飞机紧固件检查的涡流表面检测探头和检查方法
公开(公告)号：US5510709A
公开(公告)日：1996-04-23
申请号：US423489
申请日：1995-04-19
CPC分类号： G01N27/9013
摘要： An eddy current surface inspection array probe and method for detecting cracks and flaws in aircraft skin metal immediately surrounding rivets, without requiring rivet removal or manual scanning. The array probe includes a circular array of small sense coils positioned beneath a much larger drive coil encased in ferrite. The sense coils are differentially connected in pairs such that the signals from two sense coils located on opposite sides of the rivet (180.degree. apart) subtract to produce a resultant output signal. During operation, the probe is positioned concentrically over the rivet and data acquired from all sense coil pairs. If no cracks or other defects are present, all sense coil pairs produce a null (zero) signal. If a crack exists, some sense coil pairs (the exact number depending on the crack length, number of sense coils, and sense coil spacing) produce a non-zero signal. The probe and method can be employed to inspect a variety of other structural features which are nominally circularly symmetrical.
摘要翻译： 一种涡流表面检测阵列探头和方法，用于检测立即围绕铆钉的飞机皮肤金属中的裂纹和缺陷，无需拆除或手动扫描。 阵列探头包括位于铁氧体内包围的较大驱动线圈下面的小感测线圈的圆形阵列。 感测线圈成对地差分连接，使得来自位于铆钉（180°）相对侧上的两个感测线圈的信号减去以产生合成的输出信号。 在操作期间，探头同心地位于铆钉上，并从所有感测线圈对获得的数据。 如果没有出现裂纹或其他缺陷，则所有感测线圈对产生零（零）信号。 如果存在裂纹，则某些感测线圈对（根据裂纹长度，感测线圈数量和感测线圈间隔的精确数量）产生非零信号。 探头和方法可用于检查名义上圆形对称的各种其他结构特征。
-
7.发明授权
公开(公告)号：US5063779A
公开(公告)日：1991-11-12
申请号：US524415
申请日：1990-05-17
申请人： James D. Landry , Mark A. Joyce , John D. Young , Robert S. Gilmore , Frederick C. Schoenig, Jr.
发明人： James D. Landry , Mark A. Joyce , John D. Young , Robert S. Gilmore , Frederick C. Schoenig, Jr.
CPC分类号： G01N29/30 , G01N29/11 , G21C17/06 , G01N2291/044 , G01N2291/2634 , G01N2291/2675
摘要： Nuclear fuel cladding tube end plug welds are ultrasonically scanned to develop data indicative of weld thickness, weld penetration, and the existence and size of any included feature, such as pores. A computer analyzes the data to determine critical weld characteristics which are then tested against established quality assurance standards to see if the end plug weld is acceptable, all on an automated production line basis.
摘要翻译： 超声波扫描核燃料包覆管端塞焊缝，以形成指示焊缝厚度，焊缝穿透度以及所包含的特征（如孔隙）的存在和尺寸的数据。 计算机分析数据以确定关键的焊接特性，然后根据既定的质量保证标准进行测试，以查看终端焊缝是否可接受，全部采用自动化生产线。
-
公开(公告)号：US5533401A
公开(公告)日：1996-07-09
申请号：US241520
申请日：1994-05-12
申请人： Robert S. Gilmore
发明人： Robert S. Gilmore
CPC分类号： G01S15/8945 , G01N29/0609 , G01N29/221 , G01N29/225 , G01N29/26 , G01N2291/044 , G01N2291/106 , G01N2291/2634 , G01S7/52025
摘要： A multizone ultrasonic inspection apparatus and method of employing the apparatus for inspecting titanium billets is provided, in which a plurality of ultrasonic transducers having focal zones of increasing depth are positioned to examine a cylindrical billet of titanium through the thickness of the billet. The focal zones partially overlap the adjacent focal zones, thus assuring complete examination through the thickness of the entire billet. The reflected signals from the transducer receivers are processed into digital form in order to be used in generating an image of the billet undergoing inspection, and to be used in storing the image data in, for example, a hard disk or an optical disk.
摘要翻译： 提供了一种使用该钛制坯检查装置的多区超声波检查装置和方法，其中定位有多个具有增加深度的聚焦区的超声波换能器，以通过坯料的厚度检查圆柱形的钛钢坯。 焦点区域部分地与相邻的聚焦区域重叠，从而通过整个坯料的厚度确保完整的检查。 来自换能器接收器的反射信号被处理成数字形式，以便用于生成正在进行检查的坯料的图像，并且用于将图像数据存储在例如硬盘或光盘中。
-
9.发明授权Water jet mixing tubes used in water jet cutting devices and method of preparation thereof 失效用于水射流切割装置的喷水混合管及其制备方法
公开(公告)号：US5363556A
公开(公告)日：1994-11-15
申请号：US099989
申请日：1993-07-30
申请人： William F. Banholzer , Thomas R. Anthony , Robert S. Gilmore , Paul A. Siemers , John C. McCloskey
发明人： William F. Banholzer , Thomas R. Anthony , Robert S. Gilmore , Paul A. Siemers , John C. McCloskey
IPC分类号： B24C1/04 , B24C5/04 , B26F3/00 , C23C16/01 , C23C16/26 , C23C16/27 , C23C28/00 , B05B1/02 , B05D7/22 , B29C41/02
CPC分类号： C23C16/27 , B24C1/045 , B24C5/04 , C23C16/01 , Y02T50/67 , Y10S239/19 , Y10T29/49432 , Y10T29/49812 , Y10T29/49822
摘要： An improved two membered substantially crack-free water jet mixing tube of an abrasive water jet cutting device and a method of its preparation. The method comprises chemically vapor depositing diamond layer on a funnel shaped support member to form an inner member of the mixing tube, separating the inner member from the support member, depositing and then cooling an outer member on the outer side of the inner member to produce a compressive stress on the inner member that substantially prevents formation cracks on the inner member. The inner side of the inner member has a smooth bore having a microcrystalline structure and the outer member has a higher coefficient of thermal expansion than diamond. The invention is also directed to a water jet cutting device that incorporates the aforementioned improved substantially crack-free water jet mixing tube.
摘要翻译： 磨料水射流切割装置的改进的两元基本上无裂缝的水射流混合管及其制备方法。 该方法包括在漏斗状支撑构件上化学气相沉积金刚石层以形成混合管的内部构件，将内部构件与支撑构件分离，沉积然后冷却内部构件的外侧上的外部构件以产生 内部构件上的压缩应力基本上防止内部构件上的形成裂纹。 内部构件的内侧具有具有微晶结构的光滑孔，并且外部构件具有比金刚石更高的热膨胀系数。 本发明还涉及一种水射流切割装置，其包括上述改进的基本上无裂缝的水射流混合管。
-
公开(公告)号：US4825117A
公开(公告)日：1989-04-25
申请号：US126138
申请日：1987-11-27
IPC分类号： B06B1/06 , B29C70/54 , G10K11/00 , H01L41/053 , H01L41/08
CPC分类号： B06B1/067 , B29C70/54 , G10K11/004 , H01L41/053
摘要： An apparatus for monitoring the curing of a fiber reinforced composite plastic which is cured at temperatures of the order of 350.degree. C. and an ultrasonic transducer assembly useful in the apparatus. The transducer assembly comprises a lithium niobate piezoelectric element having anisotropic coefficients of thermal expansion which is mounted on a metal base of the transducer assembly by means of a layer of structured copper. The structured copper is thermo-compression diffusion bonded to the lithium niobate element and to the metal base, and is compliant in a transverse direction to compensate for differential thermal expansions while affording good electrical and thermal conductivity and good acoustic coupling between the lithium niobate element and metal base.
摘要翻译： 一种用于监测在350℃温度下固化的纤维增强复合塑料的固化的装置和在该装置中有用的超声换能器组件。 换能器组件包括具有各向异性热膨胀系数的铌酸锂压电元件，其通过结构化铜层安装在换能器组件的金属基座上。 结构化铜是热压缩扩散结合到铌酸锂元素和金属基底上，并且在横向方向上是柔性的，以补偿不同的热膨胀，同时提供良好的导电性和导热性，以及铌酸锂元素与铌酸锂元素之间良好的声耦合 金属底座。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.03 秒)
