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208 条记录 (耗时 0.012 秒)

    Detection of corrosion by a radiometric technique
    51.
    发明授权
    Detection of corrosion by a radiometric technique 失效
    通过无线电技术检测腐蚀

    公开(公告)号：US3872310A

    公开(公告)日：1975-03-18

    申请号：US33211473

    申请日：1973-02-13

    申请人： ICI LTD

    发明人： CHARLTON JOHN STUART ,  ROSS JOHN FRANCIS

    IPC分类号： G01B15/02 ,  G01T1/16

    CPC分类号： G01B15/025

    摘要： Apparatus and method for detecting corrosion in boiler tubes. The tube wall thickness of each tube is measured in situ in the bundle using a radioisotopic method. The degree of corrosion thus indicated is plotted on a diagram in a way which highlights the corroded tubes.

    摘要翻译： 锅炉管腐蚀检测装置及方法。 使用放射性同位素方法在束中原位测量每个管的管壁厚度。 如图所示的腐蚀程度以突出腐蚀管的方式绘制在图上。

    Radiation gage with sample and hold feature in deviation measuring circuit
    52.
    发明授权
    Radiation gage with sample and hold feature in deviation measuring circuit 失效
    放大测量电路中的样品和保持特性

    公开(公告)号：US3832551A

    公开(公告)日：1974-08-27

    申请号：US26514072

    申请日：1972-06-22

    申请人： BETHLEHEM STEEL CORP

    发明人： BARTLETT W ,  MANGAN E

    IPC分类号： G01B15/02 ,  G01N23/16 ,  G01N23/02

    CPC分类号： G01N23/16 ,  G01B15/025

    摘要： Utility of a radiation gage having a direct-reading measuring circuit for determining a material property, such as thickness, density, or weight-per-unit area, is extended by use of a thickness deviation measuring circuit arrangement. In a thickness deviation gage, for example, the latter circuit arrangement includes a sample-and-hold circuit for automatically storing an initial thickness signal detected when the material first enters the gage, and a difference amplifier for comparing instantaneous or subsequent thickness signals with the stored thickness signal and producing a thickness deviation signal. The thickness deviation signal plus the stored and instantaneous thickness signals are fed separately to utilization devices such as indicators and recorders as used in the thickness profile analysis of said material from end-to-end, or said thickness deviation signals may provide a control signal in an automatic control system.

    摘要翻译： 通过使用厚度偏差测量电路装置来扩展具有用于确定诸如厚度，密度或每单位面积重量的材料特性的直接读取测量电路的辐射计的实用性。 例如，在厚度偏差计中，后一电路装置包括用于自动存储当材料首次进入量规时检测到的初始厚度信号的采样和保持电路，以及用于将瞬时或后续厚度信号与 存储厚度信号并产生厚度偏差信号。 厚度偏差信号加上存储和瞬时厚度信号被分别馈送到诸如指示器和记录器之类的利用装置，如在端到端的所述材料的厚度分布分析中使用的，或者所述厚度偏差信号可以提供控制信号 自动控制系统。

    Penetrating radiation gauge
    53.
    发明授权
    Penetrating radiation gauge 失效
    穿透辐射计

    公开(公告)号：US3729632A

    公开(公告)日：1973-04-24

    申请号：US3729632D

    申请日：1970-12-21

    申请人： INDUSTRIAL NUCLEONICS CORP

    发明人： CHO B ,  PFEIFER R ,  UTT O

    IPC分类号： G01B15/02 ,  G01N23/02

    CPC分类号： G01B15/025

    摘要： A PENETRATING RADIATION GAUGE INCLUDES A PULSED X-RAY SOURCE FOR DETERMINING WALL THICKNESS OF ARTICLES MOVING PAST THE SOURCE. THE GUAGE IS CONTINUOUSLY STANDERDIZED BY RESPECTIVELY PLACING IN THE SOURCE RADIATION FIELD FIRST AND SECOND DIFFERENT STANDARD SAMPLES BETWEEN FIRST AND SECOND DIFFERENT PAIRS OF ADJACENT ARTICLES. A DETECTOR RESPONDS TO THE LEVEL OF RADIATION ABSORBED BY ARTICLES WHILE THICKNESS IN BEING MEASURED AND BY THE SAMPLES WHILE STANDARDIZATION IS BEING PERFORMED TO DERIVE AN OUTPUT SIGNAL EXPONENTIALLY RELATED TO THE RADIATION ABSOBPTION PROPERTIES OF THE ARTICLES AND SAMPLES. A LINEARIZING NETWORK RESPONSIVE TO THE DIRECTOR CONVERTS THE EXPONENTIAL RELATIONSHIP INTO A STRAIGHT LINE FUNCTION WHEREBY A LINEAR RELATIONSHIP BETWEEN THE MAGNITUDE OF THE DETECTOR OUTPUT SIGNAL AND THE ABSORPTION PROPERTY IS DERIVED. WHILE THE LINEARIZING NETWORK IS DERIVING A SIGNAL INDICATIVE OF THE RADIATION ABSORPTION PROPERTIES OF THE FIRST SAMPLE, THE STRAIGHT LINE RELATIONSHIP IS ADJUSTED SO THAT THE GAUGE RESPONSE IS A POINT ON THE LINE HAVING A PREDETERMINED OUTPUT SIGNAL CORRESPONDING WITH THE ABSORPTION PROPERTIES OF THE FIRST SAMPLES. WHILE THE LINEARIZING NETWORK IS DERIVING A SIGNAL INDICATIVE OF THE OBSORPTION PROPERTIES OF THE SECOND SAMPLES, THE SLOPE OF THE LINE ADJUSTED SO THAT THE GUAGE DERIVES AN OUTPUT SIGNAL HAVING A PREDETERMINED MAGNITUDE CORRESPONDING WITH THE OBSORPTION PROPERTIES OF THE SECOND SAMPLES

    D R A W I N G

    Instrument for measuring the thickness of layers with radio-active nucleides
    54.
    发明授权
    Instrument for measuring the thickness of layers with radio-active nucleides 失效
    用无线电激活核测量层厚度的仪器

    公开(公告)号：US3705305A

    公开(公告)日：1972-12-05

    申请号：US3705305D

    申请日：1970-09-14

    申请人： FISCHER HELMUT

    发明人： FISCHER HELMUT

    IPC分类号： G01B15/02 ,  G01T1/16

    CPC分类号： G01B15/025

    摘要： An instrument for measuring the thickness of layers by means of radiation emitted from radio-active nucleides which interact with material of the layer and are then absolved by a radiation detector. A sighting mechanism determines the area of the layer to be irradiated and a diaphragm is interposed between the radioactive nucleide and the layer to define this area. A radiation detector on a supporting device can be moved into and out of a measuring position relative to this area. The sighting mechanism is operational when the radiation detector is out of measuring position and vice versa.

    摘要翻译： 一种用于通过从与层的材料相互作用并由放射线检测器去除的放射性活性核发射的辐射来测量层的厚度的仪器。 瞄准机构确定被照射层的面积，并且在放射活性核和层之间插入隔膜以限定该区域。 支撑装置上的放射线检测器可以相对于该区域移动进出测量位置。 瞄准机制

    System and method for facilitating the operating set-up of a radiation gauge
    55.
    发明授权
    System and method for facilitating the operating set-up of a radiation gauge 失效
    用于促进辐射计的操作设置的系统和方法

    公开(公告)号：US3668398A

    公开(公告)日：1972-06-06

    申请号：US3668398D

    申请日：1968-12-26

    申请人： INDUSTRIAL NUCLEONICS CORP

    发明人： DOERING GEORGE I

    IPC分类号： G01B15/02 ,  G01T1/16

    CPC分类号： G01B15/025

    摘要： Disclosed are a system and method for facilitating the setup of a nucleonic gauge and automatic controller for measuring and controlling the thickness of a material. The gauge includes conventional calibration circuits having variable voltage dividers set in accordance with the expected operating points for the material thickness center scale and gauge sensitivity. In one embodiment, the sensitivity and operating point voltage dividers as well as the automatic controller set-point voltage divider are set with the aid of an auxiliary bridge including additional voltage dividers ganged with the voltage dividers of the gauge calibration circuits. In another embodiment, one of the auxiliary bridge voltage dividers has a logarithmic response, enabling calibration for different materials to be established by changing the input voltage to the auxiliary bridge.

    摘要翻译： 公开了一种用于便于设置用于测量和控制材料厚度的核子量规和自动控制器的系统和方法。 该量规包括具有根据材料厚度中心尺度和量度灵敏度的预期操作点设置的可变分压器的常规校准电路。 在一个实施例中，灵敏度和工作点分压器以及自动控制器设定点分压器借助辅助桥设置，辅助桥包括与量规校准电路的分压器组合的附加分压器。 在另一个实施例中，辅助桥分压器之一具有对数响应，使得能够通过改变对辅助桥的输入电压来建立不同材料的校准。

    Method for measuring wall thickness of articles using gaseous radioactive material
    56.
    发明授权
    Method for measuring wall thickness of articles using gaseous radioactive material 失效
    使用气体放射性物质测量文章的壁厚的方法

    公开(公告)号：US3564247A

    公开(公告)日：1971-02-16

    申请号：US3564247D

    申请日：1966-06-16

    申请人： UNITED AIRCRAFT CORP

    发明人： PACKE LOUIS L

    IPC分类号： G01B15/02

    CPC分类号： G01B15/025

    摘要： A method is provided for measuring the wall thickness of hollow turbine blades and turbine vanes by transferring a radioactive gas into the hollow blades or vanes to fill the interior cavity of these articles with the radioactive gas, and then measuring the intensity of the radiation transmitted through the wall of the hollow blade or vane, the intensity of this radiation providing an indication of the thickness of the wall.