公开(公告)号：US5825030A

公开(公告)日：1998-10-20

申请号：US822075

申请日：1997-03-20

申请人： Michael J. Hurwitz ,  Raymond J. Proctor ,  Siaka Yusuf

发明人： Michael J. Hurwitz ,  Raymond J. Proctor ,  Siaka Yusuf

IPC分类号： G01N23/04 ,  G01N23/222 ,  G01T1/167

CPC分类号： G01N23/222 ,  G01N23/04

摘要： In a bulk material analyzer in which bulk material is received in an activation region between a pair of neutron sources laterally disposed on one side of the activation region for emitting neutrons for bombarding the bulk material within the activation region to cause gamma-rays to be emitted from the bombarded bulk material and a pair of gamma-ray detectors laterally disposed on an opposite side of the activation region for detecting gamma-rays emitted from the bulk material, and in which a neutron moderator is disposed between the neutron sources and the activation region for reducing the velocity of the emitted neutrons such that the neutrons entering the activation region include thermal neutrons and faster neutrons, the uniformity of sensitivity of the bulk material analyzer to materials at different positions in a sample of the bulk material being analyzed is enhanced by controlling the proportions of thermal neutron at different positions within the sample being analyzed. A neutron absorber disposed close to the one side of the activation region reduces the proportion of thermal neutrons that enter the activation region from the one side of the activation region. A neutron reflector disposed on the opposite side of the activation region at least as close to the activation region as the gamma-ray detector(s) reflects neutrons into the activation region for bombarding bulk material within the activation region. In some embodiments, the neutron absorber and/or the neutron reflector are adjustable; and the disposition of the neutron sources also is adjustable for also adjusting the proportion of the thermal neutrons that enter the activation region from the one side of the activation region.

摘要翻译： 在散装材料分析仪中，其中散装材料被接收在横向设置在激活区域的一侧上的一对中子源之间的激活区域中，用于发射中子以用于轰击激活区域内的体材料以引起γ射线 来自被轰击的体材料和一对横向设置在激活区域的相对侧上的伽马射线检测器，用于检测从散装材料发射的γ射线，并且其中中子调节剂设置在中子源和激活区域之间 为了降低发射的中子的速度，使得进入激活区的中子包括热中子和更快的中子，通过控制散粒材料分析仪对待分析的散装材料的样品中不同位置处的材料的敏感性的均匀性， 分析样品内不同位置的热中子的比例。 靠近激活区域的一侧设置的中子吸收剂减少了从激活区域的一侧进入激活区域的热中子的比例。 设置在至少与伽马射线检测器的激活区域相近的激活区域的相对侧的中子反射体将中子反射到激活区域中，用于轰击激活区域内的散装材料。 在一些实施例中，中子吸收器和/或中子反射器是可调节的; 并且中子源的配置也是可调节的，用于也调节从激活区域的一侧进入激活区域的热中子的比例。

公开(公告)号：US4252024A

公开(公告)日：1981-02-24

申请号：US961788

申请日：1978-11-17

申请人： Michael J. Hurwitz

发明人： Michael J. Hurwitz

IPC分类号： G03H3/00 ,  G01N29/04 ,  G01N29/06 ,  G01S15/89 ,  G10K11/26

CPC分类号： G10K11/26 ,  G01N29/0663 ,  G01N29/343 ,  G01S15/8972 ,  G01N2291/0234 ,  G01N2291/2695

摘要： Echo ranging flaw detecting, characterizing and studying apparatus in which the work is scanned simultaneously by acoustic energy focused at a point from an acoustic-lens transducer and by acoustic energy focused along a line along which it is propagated from a focused-arc transducer. The acoustical echos from the lens transducer are combined with an electrical analog of an acoustical reference wave to produce an acoustical interference pattern which is reconstructed into a holographic display or hologram by a laser beam. The echos from the focused-arc transducer produce a cathode-ray tube display or are stored in a memory.

摘要翻译： 回声测距探伤，特征和研究装置，其中通过聚焦在声透镜换能器的点处的声能同时扫描工作，并且沿着从聚焦电弧传感器传播的线聚焦的声能。 来自透镜换能器的声学回声与声学参考波的电气模拟组合以产生声学干涉图案，其通过激光束被重建成全息显示器或全息图。 来自聚焦电弧传感器的回波产生阴极射线管显示器或存储在存储器中。

公开(公告)号：US4312229A

公开(公告)日：1982-01-26

申请号：US32841

申请日：1979-04-24

申请人： Michael J. Hurwitz ,  Paul G. Kennedy ,  James W. H. Justice

发明人： Michael J. Hurwitz ,  Paul G. Kennedy ,  James W. H. Justice

IPC分类号： G03H3/00 ,  G01N29/04 ,  G01N29/06 ,  G21C17/003

CPC分类号： G21C17/003 ,  G01N29/0636 ,  G01N2291/2695

摘要： The work is scanned by acoustic energy from a focused-arc transducer and from an acoustic-lens transducer. An echo-ranging subassembly energizes the focused-arc transducer and processes the echo trains relfected from the lines or pencils in the work along which the acoustic energy is focused. A holographic echo-processing subassembly is connected to energize the acoustic-lens transducer and to process the echoes reflected from the work where the energy from the acoustic lens impinges. The echo-ranging subassembly and the holographic echo-processing subassembly are enabled alternately and the acoustic energy from the focused-arc transducer and from the acoustic-lens transducer impinge on, and is reflected by, each of a succession of elemental areas of the work. The outputs of the echo-ranging subassembly and of the holographic echo-processing subassembly are supplied to an elastic store which may include one or more shift registers. The elastic store stores a set of magnitudes corresponding to the components of each echo train resulting from the impingement on each elemental area of acoustic energy from the focused-arc transducer and to the echo or echoes resulting from the impingement at a predetermined depth in the work of acoustic energy from the acoustic-lens transducer. The content of the elastic store is transferred to a video disc, the intelligence for each strip or each line of the work which is scanned is recorded on a track of the disc. A cathode-ray tube display is produced from the intelligences stored in the disc for the trains of echo components reflected from each strip of the work and a hologram is produced of the intelligences stored in the disc for the trains of echo components reflected from each strip of the work and a hologram is produced of the intelligences stored on the disc for the echoes resulting from the acoustic energy derived from the acoustic-lens transducer.

摘要翻译： 该工作由聚焦电弧换能器和声透镜换能器的声能进行扫描。 回波测距子组件激发聚焦电弧换能器，并处理从声能聚焦的工作中的线或铅笔重现的回波列。 连接全息回波处理子组件以激励声透镜换能器并处理从工作中反射的来自声透镜的能量的回波。 回波测距子组件和全息回波处理子组件交替启用，并且聚焦电弧换能器和声透镜换能器的声能冲击并被每个工作的一系列元素区域中的每一个所反射 。 回波测距子组件和全息回波处理子组件的输出被提供给可包括一个或多个移位寄存器的弹性存储器。 弹性存储器存储对应于由聚焦电弧换能器的每个声能区域上的撞击产生的每个回波串的分量的量值，以及在工作中预定深度处的冲击产生的回波或回波 的声能传感器的声能。 弹性存储器的内容被传送到视盘，每个条的智能或被扫描的工作的每行被记录在盘的轨道上。 从存储在光盘中的智能产生阴极射线管显示器，用于从每个工件条带反射的回波部件列，并且产生存储在盘中的智能的全息图，用于从每个条带反射的回波部件的列 并且由存储在盘上的由从声透镜换能器导出的声能产生的回波的智能产生全息图。

公开(公告)号：US4001766A

公开(公告)日：1977-01-04

申请号：US553403

申请日：1975-02-26

申请人： Michael J. Hurwitz

发明人： Michael J. Hurwitz

IPC分类号： G10K11/30 ,  H04B13/00

CPC分类号： G10K11/30

摘要： An acoustic imaging system utilizing an acoustic lens and a transducer array. A corrector device is placed in front of the transducer array to flatten the image field so as to conform to the surface of the transducer array.

公开(公告)号：US4252022A

公开(公告)日：1981-02-24

申请号：US961787

申请日：1978-11-17

申请人： Michael J. Hurwitz

发明人： Michael J. Hurwitz

IPC分类号： G10K15/00 ,  G01N29/04 ,  G01N29/06 ,  G01N29/28 ,  G01N29/44 ,  G01S15/89 ,  G03H3/00

CPC分类号： G01N29/0663 ,  G01N29/343 ,  G01N29/4463 ,  G01S15/897 ,  G01N2291/02854 ,  G01N2291/2695

摘要： In detecting, characterizing or studying flaws in work whose surface is irregular by acoustic imaging in which a holographic pattern is produced the irregular surface is scanned by acoustic energy focussed on or near the irregular surface and the reception of the acoustic energy resulting from echoes from flaws is controlled for each scanned elemental area so as to reduce to a negligible magnitude the effects or variations in the acoustical path caused by the irregularties at different elemental areas in accordance with the irregularity at that area. The control may be effected by filling in the depressions in the irregular surface with an acoustic energy absorbing material such as butyl rubber or with a material, such as wax, which is not wetted by the liquid through which the acoustic energy is propagated to the surface. The control may also be effected by introducing a phase-shift correction into the reference frequency signal, the electrical analog of an acoustical reference wave, which cooperatively with the signal derived from the received acoustic energy produces the interference pattern on the hologram.

摘要翻译： 在通过产生全息图形的声学成像来检测，表征或研究其表面不规则的缺陷时，不规则表面被聚焦在不规则表面上或其附近的声能被扫描，并且接收到来自缺陷的回波产生的声能 对于每个扫描的元素区域进行控制，以便根据该区域的不规则性将不同元素区域处的不规则性引起的声学路径的影响或变化幅度减小到可忽略的程度。 控制可以通过用诸如丁基橡胶的声能吸收材料或者诸如蜡的材料填充不规则表面中的凹陷来实现，所述材料不被被声能传播到表面的液体润湿 。 控制还可以通过将相移校正引入参考频率信号来实现，声学参考波的电模拟与从所接收的声能导出的信​​号协同地在全息图上产生干涉图案。

公开(公告)号：US4029395A

公开(公告)日：1977-06-14

申请号：US627734

申请日：1975-10-31

申请人： Michael J. Hurwitz ,  James W. Wonn

发明人： Michael J. Hurwitz ,  James W. Wonn

IPC分类号： G02B3/06 ,  G10K11/30

CPC分类号： G10K11/30 ,  G02B3/06 ,  Y10S359/90

摘要： A method for altering the lateral dimension of the focal zone produced by an integral ultrasonic lens system. The method comprises the steps of removing a volume of lens material from the integral lens system so as to define two separate and distinct remainder volumes on each side of the removed volume. The remainder volumes are then laterally or rotationally displaced relative each other to alter the lateral dimension of the focal zone produced by the integral lens or to produce a discrete focal zone for each of the remaining lens volumes.

摘要翻译： 一种用于改变由整体式超声波透镜系统产生的聚焦区的横向尺寸的方法。 该方法包括以下步骤：从整体透镜系统中去除一定体积的透镜材料，以便在去除的体积的每一侧上限定两个独立且不同的剩余体积。 然后，剩余体积相对于彼此横向或旋转移位，以改变由整体透镜产生的聚焦区域的横向尺寸，或者为每个剩余的透镜体积产生离散的聚焦区域。

公开(公告)号：US6157034A

公开(公告)日：2000-12-05

申请号：US109484

申请日：1998-07-02

申请人： Craig A. Griebel ,  Michael J. Hurwitz ,  Raymond J. Proctor ,  James P. Stronski ,  Kim-Chinh Tran ,  Siaka Yusuf

发明人： Craig A. Griebel ,  Michael J. Hurwitz ,  Raymond J. Proctor ,  James P. Stronski ,  Kim-Chinh Tran ,  Siaka Yusuf

IPC分类号： G01N23/222

CPC分类号： G01N23/222

摘要： A modular assembly for a bulk material includes container modules defining at least one radiation source cavity, at least one radiation detector channel and a passageway disposed for enabling passage of the conveyor belt through an activation region; and radiation shielding material disposed within the container means. A lower primary module contains a first portion of the radiation shielding material and defines either the radiation source cavity or the radiation detector channel. An upper primary module contains a second portion of radiation shielding material and defines the other of either the radiation source cavity or the radiation detector channel. A set of replaceable side modules contain additional portions of the radiation shielding material. The lower primary module, the upper primary module and the replaceable side modules are so shaped that the passageway is delimited by placement of side modules upon the lower primary module and placement of the upper primary module upon side modules; and portions of the replaceable side modules are shaped for delimiting the sides of a trough that is contoured for accommodating passage of the conveyor belt through the activation region. Replaceable liners of neutron moderating and/or absorbing and/or reflecting material may be placed adjacent the passageway and adjacent the side modules and/or the lower module and/or the upper module for further delimiting the passageway and/or the sides of the trough. The assembly can be modified for use with large ranges of conveyor belt sizes and shapes by replacing the replaceable side modules and/or the replaceable liners.

摘要翻译： 用于散装材料的模块化组件包括限定至少一个辐射源腔的容器模块，至少一个辐射检测器通道和设置成允许传送带通过激活区域的通道; 以及设置在容器装置内的辐射屏蔽材料。 下部主要模块包含辐射屏蔽材料的第一部分并且限定辐射源腔或辐射探测器通道。 上主模块包含辐射屏蔽材料的第二部分，并且限定辐射源腔或辐射探测器通道中的另一个。 一组可更换侧模块包含辐射屏蔽材料的附加部分。 下主模块，上主模块和可更换侧模块的形状使得通道被侧模块放置在下主模块上并且将上主模块放置在侧模块上而限定; 并且所述可更换侧模块的一部分成形为限定槽的侧面，所述槽的轮廓用于容纳所述传送带通过所述致动区域的通道。 可以将中子缓和和/或吸收和/或反射材料的可替换的衬垫放置在通道附近并且邻近侧模块和/或下模块和/或上模块以进一步限定槽的通道和/或侧面 。 可以通过更换可更换的侧模块和/或可更换的衬垫来将组件改进用于大范围的传送带尺寸和形状。

公开(公告)号：US5064603A

公开(公告)日：1991-11-12

申请号：US397824

申请日：1989-08-24

申请人： Michael J. Hurwitz ,  Douglas E. Ekeroth ,  David Squarer

发明人： Michael J. Hurwitz ,  Douglas E. Ekeroth ,  David Squarer

IPC分类号： G21C17/10 ,  G21C17/108

CPC分类号： G21C17/108

摘要： A hydroball string sensing system for a nuclear reactor that includes stainless tubes positioned to guide hydroball strings into and out of the nuclear reactor core. A sensor such as an ultrasonic transducer transmitter and receiver is positioned outside of the nuclear reactor core and adjacent to the tube. The presence of an object such a bullet member positioned at an end a hydroball string, or any one of the hydroballs interrupts the transmission of ultrasound from the transmitter to the receiver. Alternatively, if the bullet member and hydroballs include a ferritic material, either a Hall effect sensor or other magnetic field sensors such as a magnetic field rate of change sensor can be used to detect the location and position of a hydroball string. Placing two sensors along the tube with a known distance between the sensors enables the velocity of a hydroball string to be determined. This determined velocity can be used to control the flow rate of a fluid within the tube so as to control the velocity of the hydroball string.

摘要翻译： 一种用于核反应堆的液压柱检测系统，其包括不锈钢管，其定位成将液压柱引导进入核反应堆核心。 诸如超声波换能器发射器和接收器的传感器位于核反应堆核心的外部并且与管相邻。 物体的存在，例如位于末端的子弹元件，或者任何一个液压球中断超声从发射器到接收器的传输。 或者，如果子弹构件和液压球包括铁素体材料，则可以使用霍尔效应传感器或诸如磁场变化率传感器的其它磁场传感器来检测水球串的位置和位置。 在传感器之间以已知的距离沿着管放置两个传感器，可以确定液压球柱的速度。 该确定的速度可以用于控制管内的流体的流速，以便控制液压球的速度。

公开(公告)号：US3965455A

公开(公告)日：1976-06-22

申请号：US464281

申请日：1974-04-25

申请人： Michael J. Hurwitz

发明人： Michael J. Hurwitz

IPC分类号： G10K11/28 ,  H04B13/00

CPC分类号： G10K11/28

摘要： An acoustic transducer-reflector using a single disc-shaped piezoceramic element radiating into a compound reflector for obtaining a line focus sound beam that is characteristic of focused-arc transducers that maybe used for underseas applications and for non-destructive materials testing. The single transducer emits acoustic energy into the compound reflector which reshapes a circular beam into a focused arc beam. A shadow mask or aperture stop positioned in front of the reflector assures a beam such as would be radiated from a ring source.

摘要翻译： 使用单个圆盘状压电陶瓷元件的声换能器 - 反射器，其辐射到复合反射器中，以获得可用于下部应用和非破坏性材料测试的聚焦电弧换能器特征的线聚焦声束。 单个传感器将声能发射到复合反射器中，将圆形光束重塑成聚焦弧光束。 定位在反射镜前面的荫罩或孔径光阑保证了一个从环形光源辐射的光束。