中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

139 records (took 0.017 seconds)

    System and Methods to Determine and Monitor Changes in Microstructural Properties
    112.
    发明申请
    System and Methods to Determine and Monitor Changes in Microstructural Properties 审中-公开
    确定和监测微结构特性变化的系统和方法

    公开(公告)号：US20150106038A1

    公开(公告)日：2015-04-16

    申请号：US14504603

    申请日：2014-10-02

    Applicant: Board of Regents of the University of Nebraska

    Inventor： Joseph A. Turner

    IPC: G01L1/25 ,  G01N29/44 ,  G01N29/04

    CPC classification number: G01L1/255 ,  B61K9/08 ,  G01N29/04 ,  G01N29/12 ,  G01N29/2418 ,  G01N29/4445 ,  G01N2291/02881 ,  G01N2291/102 ,  G01N2291/105 ,  G01N2291/2623

    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。

    Method and Apparatus for Detection of Structural Failure
    113.
    发明申请
    Method and Apparatus for Detection of Structural Failure 有权
    结构失效检测方法与装置

    公开(公告)号：US20140320298A1

    公开(公告)日：2014-10-30

    申请号：US14275061

    申请日：2014-05-12

    Applicant: Alertek, LLC

    Inventor： Zvi H. Meiksin

    IPC: G01N29/14 ,  G01H1/00 ,  F16B31/02

    CPC classification number: G01N29/14 ,  F16B31/02 ,  G01H1/00 ,  G01L1/255 ,  G01M5/0041 ,  G01M5/0066 ,  G01N2291/105 ,  G08B21/02

    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.

    Abstract translation: 提供了一种用于识别结构中的劣化的检测系统，其具有接收声发射波的声学传感器。 由声传感器检测到的声发射波被识别为命中。 存在识别A状态，B状态和C状态的分析电路。 B状态从速率B大于速率A乘以因子f1的A状态增加命中活动。 C状态从速率C大于速率A乘以因子f2的B状态增加了命中活动。 当C状态被识别为存在的时间量达到TM值时，或者当达到基于C状态下的命中次数和时间的阈值时，激活警报。

    STRESS DETECTION IN RAIL
    114.
    发明申请
    STRESS DETECTION IN RAIL 有权
    铁路应力检测

    公开(公告)号：US20140316719A1

    公开(公告)日：2014-10-23

    申请号：US14356615

    申请日：2012-10-30

    Applicant: The Regents of the University of California

    Inventor： Francesco Lanza di Scalea ,  Claudio Nucera ,  Robert Phillips ,  Stefano Coccia

    IPC: G01L1/25

    CPC classification number: G01L1/255 ,  G01M5/0025 ,  G01M5/0066

    Abstract: Methods and apparatus, including computer program products, are provided for determining rail stress. The method may include generating at least one ultrasonic guided wave to enable the at least one ultrasonic guided wave to propagate through a rail; detecting at least one of a fundamental frequency component of the at least one ultrasonic guided wave, one or more harmonics of the at least one ultrasonic guided wave, and/or a mixing component of the at least one ultrasonic guided wave; and determining a stress of the rail based on at least a nonlinearity parameter determined from the detected at least one of the fundamental frequency component, the one or more harmonics, and the mixing component. Related apparatus, systems, methods, and articles are also described.

    Abstract translation: 提供了包括计算机程序产品在内的方法和装置，以确定铁路应力。 该方法可以包括产生至少一个超声波引导波，以使得至少一个超声波引导波能够通过轨道传播; 检测所述至少一个超声波引导波的基频分量，所述至少一个超声波引导波的一个或多个谐波和/或所述至少一个超声波引导波的混合分量中的至少一个; 以及基于从所检测到的所述基本频率分量，所述一个或多个谐波和所述混合分量中的至少一个确定的至少一个非线性参数来确定所述轨道的应力。 还描述了相关装置，系统，方法和制品。

    COMPLEX DEVICE AND ROBOT HAND DRIVE CONTROL APPARATUS
    115.
    发明申请
    COMPLEX DEVICE AND ROBOT HAND DRIVE CONTROL APPARATUS 有权
    复杂装置和机器人手动控制装置

    公开(公告)号：US20140214209A1

    公开(公告)日：2014-07-31

    申请号：US14343526

    申请日：2012-08-28

    Applicant: Makiko Sugiura ,  Hirofumi Higuchi

    Inventor： Makiko Sugiura ,  Hirofumi Higuchi

    IPC: B25J9/16 ,  G01L1/16 ,  B06B1/06

    CPC classification number: B25J9/1612 ,  B06B1/0674 ,  B25J13/082 ,  G01B17/00 ,  G01L1/16 ,  G01L1/162 ,  G01L1/255 ,  G01L5/226

    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之外的超声波元件。 超声波元件在水平方向上至少布置在基板的空腔上。

    STRESS GAUGE HAVING AN ACOUSTIC RESONANT STRUCTURE AND SENSOR FOR AT LEAST ONE PHYSICAL PARAMETER USING SUCH STRESS GAUGE
    120.
    发明申请
    STRESS GAUGE HAVING AN ACOUSTIC RESONANT STRUCTURE AND SENSOR FOR AT LEAST ONE PHYSICAL PARAMETER USING SUCH STRESS GAUGE 有权
    具有声学谐振结构的应力测量和使用这种应力测量的至少一个物理参数的传感器

    公开(公告)号：US20110132098A1

    公开(公告)日：2011-06-09

    申请号：US12669256

    申请日：2008-07-18

    Applicant: Sylvain Jean Ballandras ,  Jérémy Masson

    Inventor： Sylvain Jean Ballandras ,  Jérémy Masson

    IPC: G01L1/16 ,  H01L41/22

    CPC classification number: G01L1/162 ,  G01L1/255 ,  G01L3/10 ,  G01L5/167 ,  G01L9/0022 ,  G01L11/06 ,  G01P15/0922 ,  G01P15/18 ,  G01P2015/084 ,  Y10T29/42

    Abstract: The invention relates to a stress gauge of the type having an acoustic resonant structure, including a piezoelectric transducer (10) connected to a holder (20), the holder (20) including opposite the piezoelectric transducer (10) an imbedded reflecting portion (40). The imbedded reflecting portion (40) reflects the volume acoustic waves generated by the piezoelectric transducer (10) when it is excited according to a harmonic mode of the structure and propagating into said holder (20), the reflecting portion (40) being arranged at a distance from the piezoelectric transducer (10) such that the integral of the stress on the propagation distance of the volume acoustic waves up to their reflection is different from zero.

    Abstract translation: 本发明涉及一种具有声学谐振结构的应力计，包括连接到保持器（20）的压电换能器（10），与压电换能器（10）相对的保持器（20），嵌入反射部分（40） ）。 嵌入反射部分（40）反射由压电换能器（10）产生的体积声波，根据该结构的谐波模式激励它并传播到所述保持器（20）中，反射部分（40）被布置在 与压电换能器（10）的距离使得体积声波的传播距离直到其反射的应力积分不同于零。

Patent Agency Ranking