公开(公告)号：US20180306748A1

公开(公告)日：2018-10-25

申请号：US15770321

申请日：2016-10-28

申请人： QASS GmbH

发明人： Ulrich SEUTHE

IPC分类号： G01N27/80 ,  G01R33/00 ,  G01N27/90

CPC分类号： G01N27/725 ,  G01N27/72 ,  G01N27/82 ,  G01N27/90

摘要： The invention relates to a method for observing a magnetic field of a material volume, in particular for determining properties of a workpiece under, in particular, magnetic, mechanical, thermal, and/or electrical excitation of a material volume of the workpiece, wherein the magnetic field of the material volume is sensed as a function of time and of frequency with high frequency resolution.

公开(公告)号：US20150054501A1

公开(公告)日：2015-02-26

申请号：US14385800

申请日：2013-03-04

申请人： ZF Friedrichshafen AG

发明人： Oliver Bleicher ,  Herman Yakaria ,  Yiwen Xu

IPC分类号： G01N27/82 ,  G01N27/72 ,  G01R33/06

CPC分类号： G01N27/82 ,  G01N27/725 ,  G01R33/06

摘要： A method of inspecting a component (1) on the basis of Barkhausen noises in which a plurality of Barkhausen noise signals are processed, which have been or are determined at measurement positions (PS1, PS2, . . . , PS9) along the surface of the component (1) by a measuring device. According to the method, a computer forms a measurement matrix (M) from the Barkhausen noise signals, which matrix contains the Barkhausen noise signals detected as entries. A variety of characteristics are specified, each of which represents at least one cause of a manufacturing defect(s) of the component (1), each characteristic is associated with a processing procedure of the measurement matrix (M). The procedure is specific for the characteristic concerned. Finally, for each characteristic the measurement matrix (M) undergoes the associated processing procedure in which the intensity of the characteristic concerned is determined.

摘要翻译： 一种基于巴克豪森噪声检测组件（1）的方法，其中处理已经或者在测量位置（PS1，PS2，...，PS9）的表面上确定了多个巴克豪森噪声信号 组件（1）通过测量装置。 根据该方法，计算机从巴克豪森噪声信号形成测量矩阵（M），该矩阵包含检测为条目的巴克豪森噪声信号。 规定了各种特征，每个特征表示组件（1）的制造缺陷的至少一个原因，每个特性与测量矩阵（M）的处理过程相关联。 该程序是针对相关特征的。 最后，对于每个特征，测量矩阵（M）经历相关的处理过程，其中确定相关特征的强度。

公开(公告)号：US20130276546A1

公开(公告)日：2013-10-24

申请号：US13848077

申请日：2013-03-21

申请人： Iris Altpeter ,  Klaus Szielasko ,  Madalina Rabung ,  Siegfried Schmauder ,  Peter Binkele

发明人： Iris Altpeter ,  Klaus Szielasko ,  Madalina Rabung ,  Siegfried Schmauder ,  Peter Binkele

IPC分类号： G01N3/08 ,  G01N3/00

CPC分类号： G01N3/08 ,  G01N3/00 ,  G01N27/725 ,  G01N27/83 ,  G01N33/20

摘要： The present invention relates to methods for non-destructive quantitative determination of the internal microstresses of type II and/or III which are based on subtraction of the maximum values of the load stress dependency of the maximum Barkhausen noise amplitudes on a test piece before and after hardening of the test piece in specific thermal hardening states. The present invention hence enables independent determination of the internal microstress of type II or III, simultaneous and resolved determination of the internal microstresses of type II and III and also determination of the sum of both types of internal microstresses.

摘要翻译： 本发明涉及用于对II型和/或III型内部微应力的非破坏性定量测定的方法，该方法基于减去最大巴克豪森噪声幅度对试验片前后的载荷应力依赖性的最大值 在特定的热硬化状态下硬化试样。 因此，本发明能够独立地确定II型或III型的内部微应力，同时和分辨的II型和III型微观应力的确定以及两种类型的内部微应力的总和的确定。

公开(公告)号：US20100075347A1

公开(公告)日：2010-03-25

申请号：US12375731

申请日：2007-08-15

申请人： Sridhar V. Dasaratha ,  Samuel J. Gason ,  Paul N. Holt

发明人： Sridhar V. Dasaratha ,  Samuel J. Gason ,  Paul N. Holt

IPC分类号： G01N33/569 ,  G01N33/543 ,  G01N33/554

CPC分类号： G01N29/022 ,  G01N27/725 ,  G01N33/54333 ,  G01N33/54373 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02863 ,  G01N2291/0422 ,  G01N2291/0423

摘要： Methods for detecting target biological analytes within sample material using acousto-mechanical energy generated by a sensor are disclosed. The acousto-mechanical energy may be provided using an acousto-mechanical sensor, e.g., a surface acoustic wave sensor such as, e.g., a shear horizontal surface acoustic wave sensor (e.g., a LSH-SAW sensor). The detection of the target biological analytes in sample material are enhanced by coupling of the target biological analyte (e.g., through the use of magnetic particles), application of a magnetic field to draw the target analyte to the sensor surface, and subsequent removal of the magnetic field before measuring detection.

摘要翻译： 公开了使用由传感器产生的声 - 机械能来检测样品材料内的目标生物分析物的方法。 声机械能可以使用诸如例如剪切水平声表面波传感器（例如LSH-SAW传感器）的表面声波传感器的声 - 机械传感器来提供。 通过将目标生物分析物（例如，通过使用磁性颗粒）的耦合，施加磁场以将目标分析物吸引到传感器表面，并随后将样品材料中的目标生物分析物除去 磁场测量前检测。

公开(公告)号：US07377168B2

公开(公告)日：2008-05-27

申请号：US11300090

申请日：2005-12-13

申请人： James Zt Liu

发明人： James Zt Liu

IPC分类号： H03H9/25 ,  G01L11/04

CPC分类号： G01N29/022 ,  G01N27/025 ,  G01N27/725 ,  G01N29/2412 ,  G01N29/2462 ,  G01N29/34 ,  G01N29/36 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02863 ,  G01N2291/0423

摘要： Many sensors could be used in a passive wireless mode. These include RLC, acoustic wave and magneto-elastic sensors. These types of sensors are designed to exhibit a change in fundamental frequency when exposed to environmental factors such as temperature, pressure, or chemicals. An interrogation circuit can inductively couple to the sensor and measure the change in fundamental frequency. The change can be used to measure the environmental factor. Sensor sensitivity and inductive coupling efficiency can be competing design constraints. A driver, electrically connected to the sensor and inductively coupled to the interrogation circuit, can relax the constraints. The driver, however, can introduce noise into the sensor. The sensor can be shielded using physical and geometric techniques to reduce the noise.

摘要翻译： 许多传感器可用于无源无线模式。 这些包括RLC，声波和磁弹性传感器。 这些类型的传感器被设计为当暴露于诸如温度，压力或化学品的环境因素时表现出基频的变化。 询问电路可以感应耦合到传感器并测量基频的变化。 该变化可用于测量环境因素。 传感器灵敏度和电感耦合效率可能是竞争设计的约束。 电连接到传感器并且感应耦合到询问电路的驱动器可以放宽约束。 然而，驱动程序可能会将噪音引入传感器。 传感器可以使用物理和几何技术进行屏蔽，以减少噪音。

公开(公告)号：US20070131032A1

公开(公告)日：2007-06-14

申请号：US11300090

申请日：2005-12-13

申请人： James Liu

发明人： James Liu

IPC分类号： G01N29/36 ,  G01N27/02 ,  G01D5/12 ,  G08C19/06

CPC分类号： G01N29/022 ,  G01N27/025 ,  G01N27/725 ,  G01N29/2412 ,  G01N29/2462 ,  G01N29/34 ,  G01N29/36 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02863 ,  G01N2291/0423

摘要： Many sensors could be used in a passive wireless mode. These include RLC, acoustic wave and magneto-elastic sensors. These types of sensors are designed to exhibit a change in fundamental frequency when exposed to environmental factors such as temperature, pressure, or chemicals. An interrogation circuit can inductively couple to the sensor and measure the change in fundamental frequency. The change can be used to measure the environmental factor. Sensor sensitivity and inductive coupling efficiency can be competing design constraints. A driver, electrically connected to the sensor and inductively coupled to the interrogation circuit, can relax the constraints. The driver, however, can introduce noise into the sensor. The sensor can be shielded using physical and geometric techniques to reduce the noise.

摘要翻译： 许多传感器可用于无源无线模式。 这些包括RLC，声波和磁弹性传感器。 这些类型的传感器被设计为当暴露于诸如温度，压力或化学品的环境因素时表现出基频的变化。 询问电路可以感应耦合到传感器并测量基频的变化。 该变化可用于测量环境因素。 传感器灵敏度和电感耦合效率可能是竞争设计的约束。 电连接到传感器并且感应耦合到询问电路的驱动器可以放宽约束。 然而，驱动程序可能会将噪音引入传感器。 传感器可以使用物理和几何技术进行屏蔽，以减少噪音。

公开(公告)号：US07038444B2

公开(公告)日：2006-05-02

申请号：US10708436

申请日：2004-03-03

申请人： Alfred E. Crouch ,  Gary L. Burkhardt

发明人： Alfred E. Crouch ,  Gary L. Burkhardt

IPC分类号： G01N27/72

CPC分类号： G01N27/725

摘要： A method and system for performing in-line measurement of stresses in pipeline walls by continuous Barkhausen method comprises an inspection pig including permanent or DC electromagnets for generating a magnetic field that moves with the inspection pig through a pipeline, inductive or other types of magnetic field sensors for reading Barkhausen noise signals generated by the moving magnetic field, and associated instrumentation for amplifying, filtering, detecting and storing the Barkhausen noise signals. The size of the sensors may be selected to match the size of defects being investigated. By comparing trending data over time to determine changes in Barkhausen noise levels, greater detection sensitivity may be achieved. The method may be particularly advantageous for use in inspection pigs that also use magnetic flux leakage to determine pipeline defects, since the magnetic flux leakage method also use permanent or DC electromagnets.

摘要翻译： 通过连续的巴克豪森方法对管壁内的应力进行在线测量的方法和系统包括：检查猪，其包括永久或直流电磁铁，用于产生与检查猪一起通过管道移动的磁场，感应或其他类型的磁场 用于读取由移动磁场产生的Barkhausen噪声信号的传感器，以及用于放大，滤波，检测和存储Barkhausen噪声信号的相关仪器。 可以选择传感器的尺寸以匹配正在研究的缺陷的尺寸。 通过比较随时间的趋势数据来确定巴克豪森噪声水平的变化，可以实现更高的检测灵敏度。 由于磁通泄漏方法也使用永久或直流电磁铁，所以该方法对于也可以使用磁通泄漏来确定管道缺陷的检查猪中尤为有利。

公开(公告)号：US5121058A

公开(公告)日：1992-06-09

申请号：US686263

申请日：1991-04-15

申请人： Sidney G. Allison ,  Min Namkung ,  William T. Yost ,  John H. Cantrell

发明人： Sidney G. Allison ,  Min Namkung ,  William T. Yost ,  John H. Cantrell

IPC分类号： G01N27/72

CPC分类号： G01N27/725 ,  G01N2291/02863

摘要： A method and apparatus for testing steel components for temperature embrittlement uses magneto-acoustic emission to nondestructively evaluate the component. Acoustic emission signals occur more frequently at higher levels in embrittled components. A pair of electromagnets are used to create magnetic induction in the test component. Magneto-acoustic emission signals may be generated by applying an AC current to the electromagnets. The acoustic emission signals are analyzed to provide a comparison between a component known to be umembrittled and a test component. Magnetic remanence is determined by applying a DC current to the electromagnets, then turning the magnets off and observing the residual magnetic induction.

摘要翻译： 用于测试用于温度脆化的钢部件的方法和装置使用磁声发射来非破坏性地评估部件。 在较脆弱的组件中，声发射信号更频繁地发生在较高的水平。 一对电磁铁用于在测试部件中产生磁感应。 可通过向电磁铁施加AC电流来产生磁声发射信号。 分析声发射信号以提供已知的元件与测试部件之间的比较。 通过向电磁铁施加直流电流，然后关闭磁体并观察残余磁感应来确定磁剩磁。

公开(公告)号：US4309903A

公开(公告)日：1982-01-12

申请号：US107313

申请日：1979-12-26

申请人： Kanji Ono

发明人： Kanji Ono

IPC分类号： G01N27/72 ,  G01N3/08 ,  G01N27/00 ,  G01N29/00

CPC分类号： G01N27/725 ,  G01N2291/02491 ,  G01N2291/02863 ,  G01N2291/02881

摘要： A method and apparatus for analyzing selected properties of a ferromagnetic material by magnetically inducing acoustic emissions in the material. The acoustic emission response is measured at a plurality of values of a selected response parameter, the response parameter being characterized by an acoustic emission response which, for each of its selected values, varies in mutual nonlinearity with the acoustic emission responses for the other selected values. The measured acoustic emission responses are compared to each other and to standard responses, thereby providing a more reliable measurement of the selected property than is attainable by analyzing at only one value of the response parameter. Comparing the ratio between acoustic emission responses at different values of the selected response parameter, with standard response ratios for the same response parameter values, further enhances reliability of the measurement.In preferred embodiments the selected response parameter is the frequency of the acoustic emission response, the signal threshold level for obtaining an acoustic emission count rate, or the magnetic field strength. Properties selected for analysis in the preferred embodiments are stress, plastic deformation, microstructure and chemical composition.The invention further includes structure in which transducers for measuring acoustic emission responses at different response parameter values are coupled to a specimen by a unitary coupling mechanism, thereby reducing spurious differences between the measurements at the various response parameter values.

摘要翻译： 一种用于通过磁感应材料中的声发射来分析铁磁材料的选定性质的方法和装置。 在所选择的响应参数的多个值处测量声发射响应，响应参数由声发射响应表征，声发射响应对于其每个选定值，在与其他选定值的声发射响应的相互非线性方面变化 。 将测量的声发射响应彼此进行比较，并与标准响应进行比较，从而提供所选特性的更可靠的测量，而不仅仅是通过仅在响应参数的一个值处进行分析而得到的。 将所选响应参数的不同值的声发射响应之间的比率与相同响应参数值的标准响应比进行比较，进一步提高了测量的可靠性。 在优选实施例中，所选择的响应参数是声发射响应的频率，用于获得声发射计数率的信号阈值电平或磁场强度。 在优选实施例中选择用于分析的性质是应力，塑性变形，微结构和化学组成。 本发明还包括其中用于测量不同响应参数值的声发射响应的换能器通过单一耦合机构耦合到样本，从而减少各种响应参数值处的测量之间的虚假差异的结构。

公开(公告)号：US20170307500A1

公开(公告)日：2017-10-26

申请号：US15495108

申请日：2017-04-24

申请人： Microline Technology Corporation

发明人： Bruce I. Girrell ,  Dean M. Vieau ,  Johana M. Chirinos ,  Douglas W. Spencer ,  Trenton M. Bruce ,  Jabin D. Reinhold

IPC分类号： G01N15/08 ,  G01N27/72 ,  G01N27/02 ,  G01N29/04 ,  G01N3/40

CPC分类号： G01N29/04 ,  G01N27/02 ,  G01N27/72 ,  G01N27/725 ,  G01N27/902 ,  G01N29/11 ,  G01N29/265 ,  G01N2291/2636

摘要： A material property determining system operable to determine properties of a conduit. The material property determining system includes a tool movable along a conduit and having at least one sensing device for sensing at least one property of the conduit. A processor is operable to process outputs of the at least one sensing device. Responsive to processing of the outputs by the processor, the processor correlates the processed outputs to determine the type of material of the conduit.