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    Device for checking the thickness and the cohesion of the interface of a duplex tube
    91.
    发明授权
    Device for checking the thickness and the cohesion of the interface of a duplex tube 失效
    用于检查双面管接口的厚度和内聚力的装置

    公开(公告)号：US5329561A

    公开(公告)日：1994-07-12

    申请号：US16890

    申请日：1993-02-12

    Applicant: Didier Desruelles

    Inventor： Didier Desruelles

    IPC: G01B17/02 ,  G01N27/72 ,  G01N27/90 ,  G01N29/04 ,  G01N29/11 ,  G01N29/22 ,  G01N29/24 ,  G01N29/26 ,  G21C17/017

    CPC classification number: G01N27/72 ,  G01B17/025 ,  G01N29/11 ,  G01N29/221 ,  G01N29/2456 ,  G01N2291/0231 ,  G01N2291/02854 ,  G01N2291/02863 ,  G01N2291/02881 ,  G01N2291/0421 ,  G01N2291/044 ,  G01N2291/048 ,  G01N2291/101 ,  G01N2291/2634

    Abstract: The duplex tube (1) comprises a tubular core (2) and a cladding or covering layer (3) made from an alloy, the base metal of which is identical to the base metal of the alloy constituting the tubular core (2). Ultrasonic waves at normal incidence are emitted into the thickness of the covering (3) and of the core (2) of the tube (1), the ultrasonic waves reflected by the inner and outer surfaces of the tube, by its interface (4) and by any flaws in cohesion at the interface (4) are collected, the propagation times of the ultrasonic waves in the thickness of the tube (1) are measured, the amplitude and the shape of the reflected waves is determined, the tube (1), from its outer surface, is subjected to a magnetic induction created by a multi-frequency sinusoidal current, measurements of the phase and/or amplitude of the currents induced in the tube (1) are made, the thickness of the covering layer (3) is deduced therefrom, the total thickness of the tube (1) is calculated from the measurements of the propagation times of the ultrasonic waves and of the thickness of the covering layer (3), and the cohesion of the tube at its interface (4) is determined by analyzing the amplitude and the shape of the ultrasonic waves reflected by the interface (4) or transmitted by the covering layer (3).

    Abstract translation: 双相管（1）包括管状芯（2）和由合金制成的包层或覆盖层（3），其基体金属与构成管状芯（2）的合金的母材相同。 正常入射的超声波被发射到管（1）的覆盖物（3）和芯（2）的厚度中，由管的内表面和外表面通过其界面（4）反射的超声波， 并且通过在界面（4）处的内聚力的任何缺陷被测量，测量超声波在管（1）的厚度上的传播时间，确定反射波的振幅和形状，管（1 ）从其外表面经受由多频正弦电流产生的磁感应，制成在管（1）中感应的电流的相位和/或振幅的测量，覆盖层（的厚度） 从图3（3）中可以看出，管（1）的总厚度是根据超声波的传播时间和覆盖层（3）的厚度的测量结果和管的界面处的内聚力 4）通过分析振幅和形状o来确定 f由接口（4）反射或由覆盖层（3）传输的超声波。

    Ultrasonic multilayer paint thickness measurement
    93.
    发明授权
    Ultrasonic multilayer paint thickness measurement 失效
    超声波多层涂料厚度测量

    公开(公告)号：US5038615A

    公开(公告)日：1991-08-13

    申请号：US521875

    申请日：1990-05-11

    Applicant: Frederick J. Trulson ,  August F. Scarpelli ,  George L. Sarosy

    Inventor： Frederick J. Trulson ,  August F. Scarpelli ,  George L. Sarosy

    IPC: G01B17/02

    CPC classification number: G01B17/025

    Abstract: Ultrasonic thickness measurement of layers of paint on a substrate produces pulse echoes indicative of each layer interface. Several ultrasonic waveforms are averaged in a digital oscilloscope and the resultant waveform is analyzed by a computer programmed to recognize wave forms resembling pulse echoes, compare such waveforms to stored reference waveform characteristics, and selecting the waveform having the best fit to the reference. Each selected pulse echo is graded based on amplitude, peak separation, peak symmetry, and spacing from a previous echo to determine the quality of the waveform. Layer thickness is calculated from the spacing between pulse echoes and the velocity of sound in the layer material.

    Abstract translation: 衬底上涂层层的超声波厚度测量产生指示每层界面的脉冲回波。 在数字示波器中对几个超声波波形进行平均，并通过编程为识别类似于脉冲回波的波形的计算机分析结果波形，将这些波形与存储的参考波形特性进行比较，并选择具有最佳拟合参考的波形。 每个选择的脉冲回波基于振幅，峰值分离，峰值对称性和与先前回波的间隔进行分级，以确定波形的质量。 层厚度根据脉冲回波之间的间距和层材料中的声速来计算。

    Ultrasonic method of measuring the thickness of the plating on a metal tube, the corresponding apparatus and its application to Zr plated alloy tubes
    94.
    发明授权
    Ultrasonic method of measuring the thickness of the plating on a metal tube, the corresponding apparatus and its application to Zr plated alloy tubes 失效
    超声波测量金属管上电镀厚度的方法，相应的设备及其在镀锌合金管上的应用

    公开(公告)号：US4918989A

    公开(公告)日：1990-04-24

    申请号：US321071

    申请日：1989-03-09

    Applicant: Didier Desruelles ,  Andre Bodin ,  Philippe Moinard

    Inventor： Didier Desruelles ,  Andre Bodin ,  Philippe Moinard

    IPC: G01B17/02 ,  G01N29/07 ,  G01N29/44

    CPC classification number: G01N29/07 ,  G01B17/025 ,  G01N29/4454 ,  G01N29/4463 ,  G01N2291/02854

    Abstract: According to the method of the invention concerning tubes, of which the plating to be checked is at least 0.4 mm thick and in which the acoustic impedance differs by at least 1% relative from that of the core of the tube, a properly dampened transducer is selected which has a frequency of 4 to 10 MHz. The position of the transducer in respect to the tube is adjusted experimentally, and its parameters of distance and orientation are differently adjusted in order to increase the "signal-to-noise" ratio. For determining the thickness of the plating, at least one double echo from the interface between the plating and the tube core is used, or alternatively, a triple echo from this interface. Also, there is a corresponding ultrasonic measuring apparatus as well as an application of the method to the ultrasonic measuring of the thickness of the plating of Zr alloy tubes. The tubes are plated with non-alloyed Zr or with some other Zr alloy.

    Abstract translation: 根据本发明的关于管的方法，其中待检查的电镀厚度至少为0.4mm，并且其声阻抗相对于管芯的至少1％相差至少1％，适当地阻尼的换能器是 选择其频率为4至10MHz。 换能器相对于管子的位置通过实验调整，其距离和方向的参数被不同地调整，以增加“信噪比”比。 为了确定电镀的厚度，使用来自电镀和管芯之间的界面的至少一个双回波，或者替代地，来自该界面的三重回波。 此外，还有相应的超声波测量装置以及该方法用于超声波测量Zr合金管的镀层的厚度。 这些管镀有非合金化的Zr或一些其他的Zr合金。

    Quartz oscillator measuring head
    95.
    发明授权
    Quartz oscillator measuring head 失效
    石英振荡器测头

    公开(公告)号：US4362125A

    公开(公告)日：1982-12-07

    申请号：US283885

    申请日：1981-07-16

    Applicant: Walter Schadler

    Inventor： Walter Schadler

    IPC: G01B7/06 ,  G01B17/02 ,  B05C11/00

    CPC classification number: G01B7/066 ,  G01B17/025

    Abstract: An oscillator crystal measuring head is disclosed, for vacuum coating apparatus, intended for measuring the mass of substance which is deposited on an oscillator crystal during a deposition of thin layers, and by which the frequency of the crystal is changed. To obtain a longer, continuous measuring period, the measuring head is designed with a crystal changer in the form of a rotary support and to ensure that always identical surface areas of each crystal are coated, further apertured screens are provided in addition to an apertured screen which is fixed to the housing. These further screens are moved along with the individual crystals and can be pressed, in their measuring position, into heat conducting contact with the fixed screen. The movable screens may be designed as a single rotary screen plate which can be pressed against the fixed screen by a spring.

    Abstract translation: 公开了一种用于真空涂覆装置的振荡器晶体测量头，用于测量在薄层沉积期间沉积在振荡器晶体上的物质的质量，并且晶体的频率被改变。 为了获得更长，连续的测量周期，测量头设计有旋转支架形式的晶体变换器，并且确保每个晶体总是相同的表面积被涂覆，除了有孔屏幕之外还提供进一步的多孔屏幕 它固定在房屋上。 这些另外的屏幕与各个晶体一起移动，并且可以在它们的测量位置被压入与固定屏幕的热传导接触。 可移动屏幕可以设计成可以通过弹簧压靠在固定屏幕上的单个旋转屏幕板。

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