中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.017 seconds)

    Non-Contact Non-Destructive Testing Method and System
    1.
    发明申请
    Non-Contact Non-Destructive Testing Method and System 有权

    公开(公告)号：US20220146252A1

    公开(公告)日：2022-05-12

    申请号：US17436685

    申请日：2020-03-26

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Lei Zhang ,  Weng Heng Liew ,  Huajun Liu

    IPC: G01B11/16

    Abstract: A non-contact non-destructive testing method includes spatially and/or temporally controlling a laser excitation light based on a predetermined pattern. The laser excitation light is projected onto a surface of a test object to generate acoustic waves on the test object. The acoustic waves apply stress loading to the test object. The method also includes imaging the test object with and without stress loading using shearography imaging, and analyzing shearography imaging data to determine a presence of a defect in the test object.

    Systems and Methods for Monitoring Plastic Deformation of a Structured Material
    3.
    发明申请
    Systems and Methods for Monitoring Plastic Deformation of a Structured Material 审中-公开

    公开(公告)号：US20190383695A1

    公开(公告)日：2019-12-19

    申请号：US16487913

    申请日：2018-02-23

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Kui Yao ,  Shifeng Guo ,  Shuting Chen ,  Lei Zhang

    IPC: G01M5/00 ,  G01B17/04 ,  G01L1/16 ,  G01N29/04 ,  G01N29/44

    Abstract: Systems and methods for monitoring plastic deformation of a structural material are provided. An acoustic wave actuator is configured to generate acoustic wave signals to be propagated within the structural material and is in-situ fabricated on the structural material at a first location. An alternating current (AC) electric signal source drives the acoustic wave actuator to generate the acoustic wave signals at a predetermined frequency. One or more acoustic wave sensors detect the acoustic wave signals generated by the acoustic wave actuator and propagated within the structural material. More particularly, the acoustic wave detectors are configured to detect both fundamental and second harmonic acoustic signals at the predetermined frequency. The acoustic wave sensors are in-situ fabricated on the structural material at one or more second locations.

    Piezoelectric actuator, head gimbal assembly including the same and method of forming the same
    4.
    发明授权
    Piezoelectric actuator, head gimbal assembly including the same and method of forming the same 有权
    压电致动器，头万向架组件包括相同的方法和其形成方法

    公开(公告)号：US08767355B2

    公开(公告)日：2014-07-01

    申请号：US13746961

    申请日：2013-01-22

    Applicant: Agency for Science, Technology and Research

    Inventor： Lei Zhang ,  Kui Yao ,  Charanjit Singh Bhatia

    IPC: G11B5/58

    CPC classification number: H01L41/0906 ,  G11B5/483 ,  G11B21/16 ,  H01L41/0993 ,  H01L41/18 ,  H01L41/257 ,  H01L41/338 ,  Y10T29/42

    Abstract: According to embodiments of the present invention, a piezoelectric actuator is provided. The piezoelectric actuator includes a shear mode piezoelectric material including a first arm and a second arm intersecting each other, the shear mode piezoelectric material having a polarization direction oriented at least substantially along a length of the first arm, wherein the shear mode piezoelectric material has a first surface and a second surface opposite to the first surface, the first surface and the second surface being adapted to undergo a shear displacement relative to each other along an axis at least substantially parallel to the polarization direction in response to an electric field applied between the first surface and the second surface in a direction at least substantially perpendicular to the polarization direction.

    Abstract translation: 根据本发明的实施例，提供了一种压电致动器。 压电致动器包括剪切模式压电材料，其包括彼此交叉的第一臂和第二臂，所述剪切模式压电材料具有至少基本上沿着所述第一臂的长度取向的偏振方向，其中所述剪切模式压电材料具有 第一表面和与第一表面相对的第二表面，第一表面和第二表面适于经受至少基本上平行于偏振方向的轴线相对于彼此的剪切位移，响应于施加在第一表面之间的电场 第一表面和第二表面在至少基本垂直于偏振方向的方向上。

    Fluid jet dispenser using multilayer ceramic actuators
    5.
    发明授权
    Fluid jet dispenser using multilayer ceramic actuators 有权

    公开(公告)号：US11161125B2

    公开(公告)日：2021-11-02

    申请号：US15739695

    申请日：2016-06-22

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Meysam Sharifzadeh Mirshekarloo ,  Kui Yao ,  Szu Cheng Lai ,  Chee Kiang Ivan Tan ,  Lei Zhang

    IPC: H01L41/083 ,  B05B1/08 ,  H01L41/187 ,  H02N2/04 ,  H02N2/06

    Abstract: A fluid jet dispenser using at least two multilayer piezoelectric actuators is provided. The fluid jet dispenser includes a dispensing head and an electrical driver. The dispensing head includes at least two d31-mode multilayer piezoelectric actuators, a displacement magnifying element mechanically coupled to the d31-mode multilayer piezoelectric actuators, a piston, and a nozzle. More preferably, the two d31-mode multilayer piezoelectric actuators operate in an anti-phase condition. The electrical driver is electrically coupled to the d31-mode multilayer piezoelectric actuators for displacing the actuators in directions substantially perpendicular to polarization of piezoelectric layers in the d31-mode multilayer piezoelectric actuators in response to charging and discharging of the actuators by the electrical driver, to generate a fast movement of the piston to jet a pressurized fluid out of the nozzle of the dispensing head.

    Wireless piezoelectric accelerometer and system
    6.
    发明授权
    Wireless piezoelectric accelerometer and system 有权

    公开(公告)号：US10989732B2

    公开(公告)日：2021-04-27

    申请号：US15302976

    申请日：2015-04-10

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Kui Yao ,  Zhiyuan Shen ,  Chin Yaw Tan ,  Yi Fan Chen ,  Lei Zhang

    IPC: G01P15/09 ,  G01H11/08 ,  G01P15/08 ,  H04B1/04

    Abstract: Wireless piezoelectric accelerometers and systems are provided. A wireless piezoelectric accelerometer may comprise a piezoelectric sensing element configured to sense mechanical acceleration and produce an electrical charge signal in response of the sensed mechanical acceleration, a signal processing module (SPM) configured to convert the electrical charge signal into a voltage signal, and process and digitize the voltage signal, and a wireless module configured to modulate and transmit the digitized voltage signal as wireless signals. The piezoelectric sensing element, the SPM and the wireless module are packaged in a casing. The casing comprises a metallic shielding chamber configured to enclose the piezoelectric sensing element. The casing further comprises a non-metallic portion located in relative to the wireless module to allow transmission of the wireless signals. Corresponding wireless piezoelectric accelerometer systems are also provided.

    WIRELESS PIEZOELECTRIC ACCELEROMETER AND SYSTEM
    9.
    发明申请
    WIRELESS PIEZOELECTRIC ACCELEROMETER AND SYSTEM 审中-公开
    无线压电加速度计和系统

    公开(公告)号：US20170030944A1

    公开(公告)日：2017-02-02

    申请号：US15302976

    申请日：2015-04-10

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

    Inventor： Kui Yao ,  Zhiyuan Shen ,  Chin Yaw Tan ,  Yi Fan Chen ,  Lei Zhang

    IPC: G01P15/09 ,  G01P15/08 ,  G01H11/08

    CPC classification number: G01P15/0915 ,  G01H11/08 ,  G01P15/0802 ,  G01P15/0922 ,  G01P2015/0865 ,  H04B1/04

    Abstract: Wireless piezoelectric accelerometers and systems are provided. A wireless piezoelectric accelerometer may comprise a piezoelectric sensing element configured to sense mechanical acceleration and produce an electrical charge signal in response of the sensed mechanical acceleration, a signal processing module (SPM) configured to convert the electrical charge signal into a voltage signal, and process and digitize the voltage signal, and a wireless module configured to modulate and transmit the digitized voltage signal as wireless signals. The piezoelectric sensing element, the SPM and the wireless module are packaged in a casing. The casing comprises a metallic shielding chamber configured to enclose the piezoelectric sensing element. The casing further comprises a non-metallic portion located in relative to the wireless module to allow transmission of the wireless signals. Corresponding wireless piezoelectric accelerometer systems are also provided.

    Abstract translation: 提供无线压电加速度计和系统。 无线压电加速度计可以包括被配置为感测机械加速度并响应于感测的机械加速度而产生电荷信号的压电感测元件，被配置为将电荷信号转换成电压信号的信号处理模块（SPM） 并且对电压信号进行数字化，以及被配置为将数字化电压信号调制和发送为无线信号的无线模块。 压电传感元件，SPM和无线模块封装在外壳中。 壳体包括被配置为包围压电感测元件的金属屏蔽室。 壳体还包括相对于无线模块定位的非金属部分，以允许传输无线信号。 还提供了相应的无线压电加速度计系统。

    PEIZOELECTRIC ACTUATOR, HEAD GIMBAL ASSEMBLY INCLUDING THE SAME AND METHOD OF FORMING THE SAME
    10.
    发明申请
    PEIZOELECTRIC ACTUATOR, HEAD GIMBAL ASSEMBLY INCLUDING THE SAME AND METHOD OF FORMING THE SAME 有权
    PEICOELECTRIC执行器，包括其的头部组件及其形成方法

    公开(公告)号：US20130188282A1

    公开(公告)日：2013-07-25

    申请号：US13746961

    申请日：2013-01-22

    Applicant: Agency for Science, Technology and Research

    Inventor： Lei Zhang ,  Kui Yao ,  Charanjit Singh Bhatia

    IPC: H01L41/09 ,  G11B21/16 ,  H01L41/18

    CPC classification number: H01L41/0906 ,  G11B5/483 ,  G11B21/16 ,  H01L41/0993 ,  H01L41/18 ,  H01L41/257 ,  H01L41/338 ,  Y10T29/42

    Abstract: According to embodiments of the present invention, a piezoelectric actuator is provided. The piezoelectric actuator includes a shear mode piezoelectric material including a first arm and a second arm intersecting each other, the shear mode piezoelectric material having a polarization direction oriented at least substantially along a length of the first arm, wherein the shear mode piezoelectric material has a first surface and a second surface opposite to the first surface, the first surface and the second surface being adapted to undergo a shear displacement relative to each other along an axis at least substantially parallel to the polarization direction in response to an electric field applied between the first surface and the second surface in a direction at least substantially perpendicular to the polarization direction.

    Abstract translation: 根据本发明的实施例，提供了一种压电致动器。 压电致动器包括剪切模式压电材料，其包括彼此交叉的第一臂和第二臂，所述剪切模式压电材料具有至少基本上沿着所述第一臂的长度取向的偏振方向，其中所述剪切模式压电材料具有 第一表面和与第一表面相对的第二表面，第一表面和第二表面适于经受至少基本上平行于偏振方向的轴线相对于彼此的剪切位移，响应于施加在第一表面之间的电场 第一表面和第二表面在至少基本垂直于偏振方向的方向上。

Patent Agency Ranking