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    • 1. 发明授权
    • Method and apparatus for visualizing elastic wave propagation in a solid substance
    • 可视化固体物质弹性波传播的方法和装置
    • US06535828B1
    • 2003-03-18
    • US09695911
    • 2000-10-26
    • Takashi FurukawaHiroshi YoneyamaYukihiko HoriiNobuo Uesugi
    • Takashi FurukawaHiroshi YoneyamaYukihiko HoriiNobuo Uesugi
    • G01F1700
    • G01H9/002G01H1/12G01H5/00G01H17/00G01N29/265G01N2291/0234G01N2291/0421G01N2291/0422G01N2291/044G01N2291/102G01N2291/2632G01N2291/267
    • A method and an apparatus for visualizing an elastic wave propagation in a solid substance can be applied to a subject substance which is any one of a transparent body and an opaque body, and can detect SV waves (transverse waves) and SH waves (transverse waves) in elastic wave motion modes, and longitudinal waves, surface waves, and creeping waves. The visualization method comprises the steps of: generating elastic waves in a solid substance in response to electric signals; measuring a quantity of stress change in the solid substance in connection with elastic waves propagation in the solid substance; synchronizing a transmission timing of the electric signals with a measurement timing of the stress change; carrying out measurement while scanning a sensor; and imaging wave fronts of the elastic waves propagated in the solid substance by synchronously indicating the stress change as a function of time. The visualization apparatus comprises an elastic wave generator (8) for generating elastic waves in a solid substance (9) in response to an electric signals; an electric signal transmitter (7) for transmitting electric signals to the elastic wave generator (8); a sensor (1) for measuring elastic waves propagated in the solid substance; a sensor scanner (3) for controlling a scanning position of said sensor; a detected-signal recorder (2) for receiving and recording detected-signals from the sensor (1); a synchronizing circuit (10) for sending the detected-signals from the sensor (1) to the recorder (1) in synchronization with timing signals from the sensor scanner (3) and electric signal transmitter (7); and an elastic wave stress distribution display (4) for imaging stress distribution signals of the detected-signals from the detected-signal recorder (2).
    • 用于使固体物质中的弹性波传播可视化的方法和装置可以应用于透明体和不透明体中的任何一个的被检体,并且可以检测SV波(横波)和SH波(横波 )在弹性波运动模式,以及纵波,表面波和爬行波。 可视化方法包括以下步骤:响应于电信号产生固体物质中的弹性波; 测量与固体物质中弹性波传播相关的固体物质的应力变化量; 使电信号的发送定时与应力变化的测量定时同步; 扫描传感器时进行测量; 以及通过同时指示应力变化作为时间的函数在固体物质中传播的弹性波的成像波前面。 可视化装置包括:弹性波发生器(8),用于响应于电信号产生固体物质(9)中的弹性波; 用于向弹性波发生器(8)发送电信号的电信号发射器(7); 传感器(1),用于测量在固体物质中传播的弹性波; 传感器扫描器(3),用于控制所述传感器的扫描位置; 用于从所述传感器(1)接收和记录检测信号的检测信号记录器(2); 与来自传感器扫描器(3)和电信号发射器(7)的定时信号同步地将检测信号从传感器(1)发送到记录器(1)的同步电路(10) 以及用于对来自检测信号记录器(2)的检测信号的应力分布信号进行成像的弹性波应力分布显示(4)。
    • 2. 发明授权
    • Nuclear reactor
    • 核反应堆
    • US4290849A
    • 1981-09-22
    • US953274
    • 1978-10-20
    • Nobuo UesugiTatsuo MiyazawaMituaki FurudateKeiichi SasakiHiroji Mizuguchi
    • Nobuo UesugiTatsuo MiyazawaMituaki FurudateKeiichi SasakiHiroji Mizuguchi
    • G01B17/00G01N29/26G21C17/00G21C17/08G21C19/19
    • G01N29/26G21C17/00G21C17/08
    • A nuclear reactor comprising a reactor vessel, a core housed in the reactor vessel, an ultrasonic transducer mounted in the vicinity of the upper end of the core for emitting and receiving an ultrasonic wave pulse signal propagating above the core, means for rotating the transducer by a prescribed angle to scan horizontally the ultrasonic wave emitted from the transducer, a plurality of reflective means mounted in the vicinity of the upper end of the core in a manner to face the transducer for reflecting the ultrasonic wave signal emitted from the transducer, means for energizing the transducer, and means for displaying the ultrasonic wave signal reflected by the reflective members and received by the transducer in synchronism with the wave scanning motion of the transducer, wherein each reflective member comprises reflective surfaces each capable of reflecting the incident ultrasonic wave signal in a direction parallel with the incident direction and is mounted such that the distances of the reflective surfaces from the transducer are different enough from each other to prevent interference among the reflected ultrasonic wave signals.
    • 一种核反应堆,包括反应器容器,容纳在反应器容器中的芯,安装在芯的上端附近的超声换能器,用于发射和接收在芯上传播的超声波脉冲信号,用于使换能器旋转的装置 水平地扫描从换能器发射的超声波的规定角度,多个反射装置,以反射从换能器发射的超声波信号的方式安装在芯的上端附近,以反射换能器的装置, 激励换能器,以及用于显示由反射构件反射并由换能器接收的与换能器的波扫描运动同步的超声波信号的装置,其中每个反射构件包括反射表面,每个反射表面能够将入射的超声波信号反射 与入射方向平行的方向并且安装成使得距离 来自换能器的反射表面彼此不同,以防止反射的超声波信号之间的干扰。