Method and apparatus for acoustic emissions testing

    公开(公告)号:US09989501B2

    公开(公告)日:2018-06-05

    申请号:US15150595

    申请日:2016-05-10

    CPC classification number: G01N29/14 G01H1/00 G01L1/106

    Abstract: A method and apparatus for analyzing an object using acoustic emissions. Load data is received for the object. Acoustic waveform data is received for the object from an acoustic sensing system. The acoustic waveform data represents acoustic emissions emanating from the object and is detected using the acoustic sensing system. A plurality of bins is created for the load data. A plurality of frequency distribution functions is generated for the plurality of bins using the acoustic waveform data. A set of learning algorithms is applied to the plurality of frequency distribution functions and the acoustic waveform data to generate an output that allows an operator to more easily and quickly assess a structural integrity of the object.

    Wire timing and tensioning device
    105.
    发明授权
    Wire timing and tensioning device 有权
    电线定时和张紧装置

    公开(公告)号:US09464949B2

    公开(公告)日:2016-10-11

    申请号:US13857221

    申请日:2013-04-05

    CPC classification number: G01L1/10 G01L5/042

    Abstract: A “semi-automated” device, method and/or system for the determination of line sag in a tensioned (e.g., power) line is described. A prescribed number of waves based on the waves required by a given sag-tension chart is input. After the device is directly or indirectly attached onto the line, the user then induces a wave on the line either by pulling/striking the tensioned line. The device automatically measures the acceleration/inflection of the passing waves and the time of arrival of waves, as well as ambient temperature, and signaling the user upon completion of the measurement. These recorded values can be used to determine the actual sag of the tensioned line, thus avoiding the current error-prone approach of using a manual stopwatch and visual deflection of the waves.

    Abstract translation: 描述了用于确定张紧(例如功率)线中的线下垂的“半自动化”装置,方法和/或系统。 输入基于给定的下垂张力图所需的波的规定数量的波。 在设备直接或间接附着在线路上之后,用户然后通过拉/拉张紧的线路在线路上引起波浪。 该装置自动测量通过波的加速/弯曲,波的到达时间以及环境温度,并在测量完成时向用户发出信号。 这些记录值可用于确定张紧线的实际下垂,从而避免使用手动秒表的当前容易出错的方法和波浪的视觉偏转。

    Method, apparatus and software for providing user feedback
    106.
    发明授权
    Method, apparatus and software for providing user feedback 有权
    用于提供用户反馈的方法,设备和软件

    公开(公告)号:US09208763B2

    公开(公告)日:2015-12-08

    申请号:US14268324

    申请日:2014-05-02

    Abstract: A device for providing feedback to a user of a string instrument is described. The device comprises receiving circuitry operable in use to communicate with at least one finger sensor capable of detecting the force of a finger on a string, a camera operable in use to capture an image and a display operable in use to display data, wherein the receiving circuitry, camera and display are connected to processing circuitry which is operable to: detect, from the receiving circuitry, the force of a user's finger on at least one string at a given time; detect, from the camera, the position of the user's finger on the at least one string at the given time; compare the detected force of the user's finger and the position of the user's finger on the at least one string at the given time with a predetermined value of force and position at the given time; and generate, on the basis of the said comparison, feedback to display on the display.

    Abstract translation: 描述了用于向弦乐器的用户提供反馈的装置。 该装置包括可操作的接收电路,用于与能够检测手指在弦上的力的至少一个手指传感器通信,可用于捕获图像的相机和可用于显示数据的显示器,其中接收 电路,相机和显示器连接到处理电路,处理电路可操作以:在给定时间,从接收电路检测用户手指对至少一个串的力; 在给定时间从相机检测用户手指在至少一个弦上的位置; 在给定时间用给定时间的预定的力和位置值比较所检测的用户手指的力和用户手指在至少一个弦上的位置; 并且基于所述比较生成在显示器上显示的反馈。

    LOAD SENSOR
    107.
    发明申请
    LOAD SENSOR 审中-公开
    负载传感器

    公开(公告)号:US20140338469A1

    公开(公告)日:2014-11-20

    申请号:US14450293

    申请日:2014-08-04

    Inventor: KOUMEI FUJITA

    CPC classification number: G01L1/10 G01H1/003 G01L1/106 G01L5/00

    Abstract: A load sensor includes a vibrator, a drive electrode provided at the vibrator, a drive circuit that supplies, to the drive electrode, a drive voltage for vibrating the vibrator, a detection electrode that outputs a current in response to a vibration of the vibrator, and an IV converter that converts the current output from the detection electrode into a voltage. The drive circuit includes an operational amplifier that outputs the drive voltage and a resistor connected to the operational amplifier. The drive circuit has a small internal resistance. The IV converter has an inverted input terminal that is virtually grounded and that has the current input thereto. The IV converter may constitute a negative feedback circuit.

    Abstract translation: 负载传感器包括振动器,设置在振动器处的驱动电极,向驱动电极提供用于使振动器振动的驱动电压的驱动电路,响应于振动器的振动而输出电流的检测电极, 以及将检测电极的电流输出转换为电压的IV转换器。 驱动电路包括输出驱动电压的运算放大器和连接到运算放大器的电阻。 驱动电路内阻小。 IV转换器具有实际上接地并具有电流输入的反相输入端子。 IV转换器可以构成负反馈电路。

    METHOD OF DETERMINING THE BREAKING STRESS IN SHEAR OF A PART OF DETERMINED THICKNESS
    109.
    发明申请
    METHOD OF DETERMINING THE BREAKING STRESS IN SHEAR OF A PART OF DETERMINED THICKNESS 审中-公开
    确定切割厚度部分断裂应力的方法

    公开(公告)号:US20130345992A1

    公开(公告)日:2013-12-26

    申请号:US13917227

    申请日:2013-06-13

    Applicant: SNECMA

    CPC classification number: G01L1/10 G01N29/46 G01N2291/02827 G01N2291/2693

    Abstract: A method of determining the breaking stress in shear for a part of determined thickness and made up of two elements that are bonded together by a layer of adhesive. A plane sensor emits an ultrasound wave at the part of determined thickness. The plane sensor receives a reflected signal made up of a plurality of successive echoes. A processor unit calculates a fast Fourier transform of the reflected signal. A Gaussian envelope connecting together the peaks of all of the resonances of the fast Fourier transform is determined. A frequency at which the Gaussian envelope is at a maximum is determined. The breaking stress from a predetermined correspondence relationship between the frequency of the maximum of the Gaussian envelope and the breaking stress is determined.

    Abstract translation: 确定部分确定厚度的剪切中的断裂应力的方法,并由由粘合剂层粘合在一起的两个元件组成。 平面传感器在确定的厚度部分发射超声波。 平面传感器接收由多个连续回波构成的反射信号。 处理器单元计算反射信号的快速傅里叶变换。 确定将快速傅里叶变换的所有谐振的峰值连接在一起的高斯包络线。 确定高斯包络处于最大值的频率。 确定高斯包络的最大值的频率与断裂应力之间的预定对应关系的断裂应力。

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