비선형 유도초음파를 이용한 볼트 축력 측정 장치 및 방법
    91.
    发明公开
    비선형 유도초음파를 이용한 볼트 축력 측정 장치 및 방법 有权
    使用非线性引导超声波测量螺栓预载荷的装置和方法

    公开(公告)号:KR1020110136110A

    公开(公告)日:2011-12-21

    申请号:KR1020100055908

    申请日:2010-06-14

    CPC classification number: G01L5/246 F16B31/02 G01L1/255 G01N29/07

    Abstract: PURPOSE: A bolt tension measuring system and a method using a nonlinear conduction ultrasonic wave are provided to prevent the inconvenience on the horizontal plane contact between the outer side surface of a washer and the sensing surface of an ultrasonic sensor. CONSTITUTION: A bolt tension measuring system comprises an ultrasonic inducing member(100) and an ultrasonic sensor(200). The ultrasonic inducing member is arranged between a bolt(20) fixed on an object plane and a screwnut(30) fixed on the bolt. The ultrasonic sensor is attached to the ultrasonic inducing member. The ultrasonic sensor measures the tension of the object plane. The ultrasonic inducing member comprises one or more plane cut part(120). The ultrasonic sensor is attached to the plane cut part. The ultrasonic inducing member is a polygonal shape.

    Abstract translation: 目的:提供螺栓张力测量系统和使用非线性传导超声波的方法,以防止垫圈的外侧表面与超声波传感器的感测表面之间的水平面接触的不便。 构成:螺栓张力测量系统包括超声波引导构件(100)和超声波传感器(200)。 超声波引导构件设置在固定在物体平面上的螺栓(20)和固定在螺栓上的梳子(30)之间。 超声波传感器附接到超声波感应构件。 超声波传感器测量物体的张力。 超声波引导构件包括一个或多个平面切割部分(120)。 超声波传感器连接到平面切割部分。 超声波引导部件为多边形。

    Method and apparatus for detection of structural failure

    公开(公告)号:US09784718B2

    公开(公告)日:2017-10-10

    申请号:US14275061

    申请日:2014-05-12

    Applicant: Alertek, LLC

    Inventor: Zvi H Meiksin

    Abstract: A detection system for identifying deterioration in a structure is provided that has acoustic sensors that receive acoustic emission waves. The acoustic emission wave detected by the acoustic sensor is identified as a hit. An analysis circuit is present that identifies an A state, a B state, and a C state. The B state has increased hit activity from the A state where a rate B is greater than a rate A by a factor of f1. The C state has increased hit activity from the B state where a rate C is greater than the rate A by a factor of f2. An alarm is activated when an amount of time that the C state is identified as being present reaches a value of TM, or alternatively when a threshold value based upon of the number of hits and time in the C state is reached.

    Solid borne sound wave phase delay comparison
    97.
    发明申请
    Solid borne sound wave phase delay comparison 有权
    固体声波相位延迟比较

    公开(公告)号:US20160153847A1

    公开(公告)日:2016-06-02

    申请号:US14901972

    申请日:2014-07-04

    Inventor: Lutz MAY

    CPC classification number: G01L1/255 G01M5/0066

    Abstract: A mechanical force measurement system is for measuring a force onto an object. The measurement system includes a sound wave generator which is adapted to generate a solid borne sound wave signal within the object. The system further includes a first sound wave receiver which receives a first solid borne sound wave signal based on the solid borne sound wave signal generated within the object by the sound wave generator. In order to compare a phase of the generated solid borne sound wave signal and a phase of the first received solid borne sound wave signal, and to generate a comparison signal based thereon. The system also includes a comparator unit. An evaluation unit of the system determines the mechanical force based on a data base and the comparison signal. The data base has stored a relation of a mechanical force and a comparison.

    Abstract translation: 机械力测量系统用于测量物体上的力。 测量系统包括适于在物体内产生固体声波信号的声波发生器。 该系统还包括:第一声波接收器,其基于由声波发生器在物体内产生的固体声波信号接收第一固体声波信号。 为了比较所生成的固体声波信号的相位和第一接收的固体声波信号的相位,并基于此生成比较信号。 该系统还包括比较器单元。 该系统的评估单元基于数据库和比较信号确定机械力。 数据库存储了机械力和比较的关系。

    Pressure and ultrasonic sensor
    98.
    发明授权
    Pressure and ultrasonic sensor 有权
    压力和超声波传感器

    公开(公告)号:US09221171B2

    公开(公告)日:2015-12-29

    申请号:US14343526

    申请日:2012-08-28

    Abstract: A complex device includes: a substrate having a thick portion, a cavity and a membrane for bridging the cavity; and multiple piezoelectric elements having a lower electrode, a piezoelectric film and an upper electrode. A part of the piezoelectric elements has a projecting portion arranged on the upper electrode. The part of piezoelectric elements (30) provides a vertical pressure detection element. The piezoelectric elements further have an ultrasonic element other than the vertical pressure detection element. The ultrasonic element is arranged over at least the cavity of the substrate in a horizontal direction.

    Abstract translation: 复杂装置包括:具有厚部分的基底,用于桥接空腔的空腔和膜; 以及具有下电极,压电膜和上电极的多个压电元件。 压电元件的一部分具有布置在上电极上的突出部分。 压电元件(30)的一部分提供垂直压力检测元件。 压电元件还具有除垂直压力检测元件以外的超声波元件。 超声波元件在水平方向上至少布置在基板的空腔上。

    SYSTEM AND METHODS TO DETERMINE AND MONITOR CHANGES IN MICROSTRUCTURAL PROPERTIES
    100.
    发明申请
    SYSTEM AND METHODS TO DETERMINE AND MONITOR CHANGES IN MICROSTRUCTURAL PROPERTIES 审中-公开
    微结构特性决定和监测变化的系统和方法

    公开(公告)号:US20110098942A1

    公开(公告)日:2011-04-28

    申请号:US12984291

    申请日:2011-01-04

    Abstract: A system and methods with which changes in microstructure properties such as grain size, grain elongation, texture, and porosity of materials can be determined and monitored over time to assess conditions such as stress and defects. An example system includes a number of ultrasonic transducers configured to transmit ultrasonic waves towards a target region on a specimen, a voltage source configured to excite the first and second ultrasonic transducers, and a processor configured to determine one or more properties of the specimen.

    Abstract translation: 可以随时间确定和监测材料的微观结构特性如晶粒尺寸,晶粒伸长率,纹理和孔隙度等变化的系统和方法,以评估应力和缺陷等条件。 示例性系统包括多个超声波换能器,其配置成朝向样本上的目标区域发射超声波,配置成激发第一和第二超声波换能器的电压源以及被配置为确定样本的一个或多个特性的处理器。

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