公开(公告)号：US20100206091A1

公开(公告)日：2010-08-19

申请号：US12707763

申请日：2010-02-18

Applicant: Arie Ariav ,  Vladimir Ravitch

Inventor： Arie Ariav ,  Vladimir Ravitch

IPC: G01L5/00

CPC classification number: G01L1/255 ,  G01L5/16

Abstract: Apparatus for measuring components of a point force includes a first rigid member having an outer surface to receive the point force to be measured, and three spherical force transmitting elements, each of spherical or partial-spherical configuration, projecting from its inner surface, and a second rigid member having an inner surface facing the inner surface of the first member and formed with three sockets for receiving the three spherical force transmitting elements, each of the sockets includes two planar walls diverging in the direction towards the inner surface of the second member so as to be engaged by the respective spherical force transmitting element of the first member at two contact points, and to space apart the inner surfaces of the first and second members. A force sensor is located at each of the two contact points of each of the spherical force transmitting elements to sense the force applied by the respective spherical force transmitting element to each of the two planar surfaces of the second member.

Abstract translation: 用于测量点力的部件的装置包括具有外表面以接收待测量的点力的第一刚性构件和从其内表面突出的每个球形或部分球形构造的三个球形力传递元件， 第二刚性构件具有面向第一构件的内表面的内表面并且形成有用于接收三个球形力传递元件的三个插座，每个插座包括沿着朝向第二构件的内表面的方向发散的两个平面壁， 以便在两个接触点处由第一构件的相应的球形力传递元件接合，并且使第一和第二构件的内表面间隔开。 力传感器位于每个球形力传递元件的两个接触点中的每一个上，以感测由相应的球形力传递元件施加到第二构件的两个平坦表面中的每一个的力。

公开(公告)号：US20090173161A1

公开(公告)日：2009-07-09

申请号：US12227772

申请日：2007-05-24

Applicant: Ian E. Kibblewhite ,  Donald E. Kotas

Inventor： Ian E. Kibblewhite ,  Donald E. Kotas

IPC: F16B31/02

CPC classification number: G01L1/255 ,  B25B23/1456 ,  B25B23/147 ,  B25B23/1475 ,  F16B1/0071 ,  F16B2031/022 ,  G01L5/246

Abstract: A system is provided for both reading an optical identification mark, such as a bar code, on a fastener and for making ultrasonic load measurements in the fastener using a single probe for use during fastener installation with assembly tools and for the inspection of load in preinstalled fasteners. The probe includes both a fiber optic imaging cable and at least one electrical conductor. The fiber optic imaging cable is optically coupled to an imaging device such as a bar code reader allowing the bar code reader to be located remote from the fastener. The electrical conductor provides an electrical connection from the ultrasonic transducer on the fastener to load measurement instrumentation. The probe is further capable of providing illumination of the bar code to facilitate reading of the bar code.

Abstract translation: 提供一种系统，用于读取紧固件上的光学识别标记（例如条形码），并且使用单个探针在紧固件安装期间使用组装工具进行超声波载荷测量，并用于检查预先安装的载荷 紧固件。 探头包括光纤成像电缆和至少一个电导体。 光纤成像电缆光学耦合到诸如条形码读取器的成像装置，其允许条形码读取器远离紧固件定位。 电导体提供从紧固件上的超声换能器到负载测量仪器的电连接。 该探头还能够提供条形码的照明，以便于读取条形码。

公开(公告)号：US20090056454A1

公开(公告)日：2009-03-05

申请号：US12079925

申请日：2008-03-28

Applicant: Joseph Alan Turner

Inventor： Joseph Alan Turner

IPC: G01N29/11

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

Abstract: The present invention is directed to a system and methods with 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. The present invention includes a database of data, wherein a first set of data is used for comparison with a second set of data to determine the conditions of the material microstructure.

Abstract translation: 本发明涉及随着时间的推移可以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，以评估诸如应力和缺陷的条件。 本发明包括数据库，其中第一组数据用于与第二组数据进行比较，以确定材料微观结构的条件。

公开(公告)号：US06679119B2

公开(公告)日：2004-01-20

申请号：US09870025

申请日：2001-05-30

Applicant: David B. Board

Inventor： David B. Board

IPC: G01N2900

CPC classification number: G01N29/42 ,  G01H1/003 ,  G01L1/255 ,  G01N29/045 ,  G01N29/12 ,  G01N29/227 ,  G01N29/36 ,  G01N2291/014 ,  G01N2291/015 ,  G01N2291/02827 ,  G01N2291/269

Abstract: A sensor for detecting stress waves for use in a stress wave analysis system. The stress waves are preferably detected in a narrow frequency range of 35-40 KHz. At this range, stress waves from friction and impact sources typically propagate through machine structures at detectable amplitudes. In order to maximize the signal to noise ratio of stress waves, relative to background noise and vibration, the sensor of the present invention is designed and calibrated with a frequency response and damping features that are specifically tailored for stress wave analysis. The sensor is a multi-functional sensor that can measure a number of logically related parameters for indicting the mechanical condition of a machine. It is often desirable to measure both friction and one or more other parameters appropriate for indication of a machine's health, where all of the measuring capability is contained in one sensor. The multi-functional capability of the present invention significantly reduces the acquisition, installation, and maintenance costs of the condition monitoring instrumentation system.

Abstract translation: 一种用于检测应力波分析系统应用的传感器。 应力波优选在35-40KHz的窄频范围内检测。 在这个范围内，来自摩擦和冲击源的应力波通常以可检测的振幅传播通过机械结构。 为了使应力波的相对于背景噪声和振动的信噪比最大化，本发明的传感器被设计和校准，其具有针对应力波分析专门定制的频率响应和阻尼特征。 传感器是一种多功能传感器，可以测量多个与逻辑相关的参数，用于指示机器的机械状态。 通常希望测量摩擦和适合于指示机器健康的一个或多个其它参数，其中所有测量能力都包含在一个传感器中。 本发明的多功能能力显着降低了状态监测仪表系统的采集，安装和维护成本。

公开(公告)号：US06477473B2

公开(公告)日：2002-11-05

申请号：US09898218

申请日：2001-07-03

Applicant: Don E. Bray

Inventor： Don E. Bray

IPC: G01L100

CPC classification number: G01N29/07 ,  G01L1/255 ,  G01N29/227 ,  G01N2291/02827 ,  G01N2291/103 ,  G01N2291/2623 ,  G01N2291/2693

Abstract: The latent stress in a material can be measured using critically refracted longitudinal ultrasonic technique. The system uses a frame to hold a hydraulic piston. The piston is used to apply an adjustable force against the probes. A signal is initiated by a first transducer. The signal is angled against the piece under test so as to create a critically refracted wave along the piece. The delay time to receive the wave at a first and second probe is measured. The delay time correlates to a stress in the piece.

公开(公告)号：US20020043106A1

公开(公告)日：2002-04-18

申请号：US09870025

申请日：2001-05-30

Applicant: SWANTECH, L.L.C.

Inventor： David B. Board

IPC: G01L001/00

CPC classification number: G01N29/42 ,  G01H1/003 ,  G01L1/255 ,  G01N29/045 ,  G01N29/12 ,  G01N29/227 ,  G01N29/36 ,  G01N2291/014 ,  G01N2291/015 ,  G01N2291/02827 ,  G01N2291/269

Abstract: A sensor for detecting stress waves for use in a stress wave analysis system. The stress waves are preferably detected in a narrow frequency range of 35-40 KHz. At this range, stress waves from friction and impact sources typically propagate through machine structures at detectable amplitudes. In order to maximize the signal to noise ratio of stress waves, relative to background noise and vibration, the sensor of the present invention is designed and calibrated with a frequency response and damping features that are specifically tailored for stress wave analysis. The sensor is a multi-functional sensor that can measure a number of logically related parameters for indicting the mechanical condition of a machine. It is often desirable to measure both friction and one or more other parameters appropriate for indication of a machine's health, where all of the measuring capability is contained in one sensor. The multi-functional capability of the present invention significantly reduces the acquisition, installation, and maintenance costs of the condition monitoring instrumentation system.

Abstract translation: 一种用于检测应力波分析系统应用的传感器。 应力波优选在35-40KHz的窄频范围内检测。 在这个范围内，来自摩擦和冲击源的应力波通常以可检测的振幅传播通过机械结构。 为了使应力波的相对于背景噪声和振动的信噪比最大化，本发明的传感器被设计和校准，其具有针对应力波分析专门定制的频率响应和阻尼特征。 传感器是一种多功能传感器，可以测量多个与逻辑相关的参数，用于指示机器的机械状态。 通常希望测量摩擦和适合于指示机器健康的一个或多个其它参数，其中所有测量能力都包含在一个传感器中。 本发明的多功能能力显着降低了状态监测仪表系统的采集，安装和维护成本。

公开(公告)号：US5808207A

公开(公告)日：1998-09-15

申请号：US885475

申请日：1997-06-30

Applicant: Dick J. Chang ,  James P. Nokes ,  Francis Hai

Inventor： Dick J. Chang ,  James P. Nokes ,  Francis Hai

IPC: G01L1/25 ,  G01L11/04 ,  G01N3/08

CPC classification number: G01L11/04 ,  G01L1/255

Abstract: A thin film stress sensor measures the maximum compressive stress between two elements that are compressed together. The sensor is formed from a thin RTV film impregnated with microballoons and reinforced with carbon fibers to restrain the lateral deformation of the RTV so that more uniform pressure can be exerted on the microballoons when the sensors are uniaxially compressed. The testing method includes applying a compressive stress up to an maximum compressive stress to rupture a first portion of the microballoons, and then applying an interrogating pressure causing acoustic emissions emitted by a second portion of the microballoons when the interrogating pressure equals the equivalent maximum compressive stress, so as to determine the maximum compressive stress.

Abstract translation: 薄膜应力传感器测量压缩在一起的两个元件之间的最大压应力。 传感器由浸渍有微球的薄RTV薄膜形成，并用碳纤维增强，以抑制RTV的横向变形，从而当传感器被单轴压缩时，能够对微球施加更均匀的压力。 测试方法包括施加最大压缩应力的压缩应力以破坏微球的第一部分，然后当询问压力等于当量最大压应力时，施加询问压力，引起由微球的第二部分发射的声发射 ，以确定最大压应力。

公开(公告)号：US5750900A

公开(公告)日：1998-05-12

申请号：US792695

申请日：1997-01-29

Applicant: Monte K. Hugentobler ,  Efrain Anthony Mandracchia

Inventor： Monte K. Hugentobler ,  Efrain Anthony Mandracchia

IPC: G01L1/25 ,  G01N29/22 ,  G01N29/24

CPC classification number: G01L1/255 ,  G01N29/223 ,  G01N29/227 ,  G01N29/2412 ,  G01N2291/02827

Abstract: The present invention defines an improved strain gauge and a method of using an electromagnetic acoustic transducer (EMAT) for monitoring stress and strain in an underlying workpiece. The gauge is provided with positioning pins for fixing the registration of the EMAT relative to the workpiece. The gauge is provided with a friction reducing means, such as a bearing or a wheel assembly, to minimize EMAT bottom contact surface area and thus unwanted frictional influences caused by deformation of the workpiece under the EMAT. An assembly for reliably positioning the EMAT gauge above a workpiece is also disclosed, in which the assembly comprises an actuating means which by a linkage mechanism lowers or raises at least the EMAT into position, further allowing access to the positioning pins for applying the necessary force to fix the position of the gauge relative to the workpiece.

Abstract translation: 本发明定义了改进的应变计和使用电磁声换能器（EMAT）来监测下层工件中的应力和应变的方法。 该量规设有定位销，用于固定EMAT相对于工件的对准。 仪表上设置有诸如轴承或轮子组件之类的摩擦减小装置，以最小化EMAT底部接触表面积，并因此使EMAT下的工件变形引起不必要的摩擦影响。 还公开了一种用于将EMAT计量器可靠地定位在工件上方的组件，其中组件包括致动装置，该致动装置通过连杆机构将至少EMAT降低或升高到位，还允许进入定位销以施加必要的力 以固定仪表相对于工件的位置。

公开(公告)号：US5604314A

公开(公告)日：1997-02-18

申请号：US504224

申请日：1995-07-19

Applicant: Allen R. Grahn

Inventor： Allen R. Grahn

IPC: G01B15/06 ,  G01L1/25 ,  G01L5/16 ,  G01L5/22 ,  G01H5/00

CPC classification number: G01B17/04 ,  G01L1/255 ,  G01L5/16 ,  G01L5/228 ,  G01N2291/02827

Abstract: A triaxial force sensor using a hemispherical target supported by a compliant element such as a spring or an elastomer supported by a rigid support member. The sensor includes a plurality of ultrasonic transducers disposed in a plane at equal intervals about the target and vertically and laterally offset from the target. The transducers are oriented at an oblique angle to the plane, and aimed at the target in its rest position. The target is displaced by sufficient force applied to elastically deform the compliant element, which displacement alters the transit times of ultrasonic signals from the transducers which are reflected from the target. If at least three sensor units are employed non-colinearly, the six force-torque components, F.sub.x, F.sub.y, F.sub.z, M.sub.x, M.sub.y, M.sub.z, can be determined from the pulse transit times, the speed-of-sound in the medium or media between the transducers and the target, the deformation response of the compliant element, and the known geometry and spacing of the transducers. Pairs of transducers may be rotationally offset from each other to determine different force-torque components. A plurality of sensors as described may be employed together in a multi-sensor array. An alternative embodiment employing both the amplitude and the transit time of an ultrasonic pulse is also disclosed.

Abstract translation: 一种三轴力传感器，其使用由诸如弹簧的柔性元件或由刚性支撑构件支撑的弹性体支撑的半球形靶。 该传感器包括多个超声波换能器，该超声波换能器以相等的间隔设置在平面上，并且与目标物垂直和侧向偏移。 换能器被定向成与该平面成倾斜的角度，并且将目标瞄准在其静止位置。 目标通过施加足够的力以使柔性元件弹性变形而移位，该位移改变来自目标反射的换能器的超声波信号的传送时间。 如果非共线使用至少三个传感器单元，则可以从脉冲传递时间，介质中的声速或者声音的速度确定六个力 - 扭矩分量Fx，Fy，Fz，Mx，My，Mz 传感器和目标之间的介质，柔性元件的变形响应以及换能器的已知几何形状和间隔。 换能器对可以彼此旋转地偏移以确定不同的力 - 扭矩分量。 所描述的多个传感器可以一起用于多传感器阵列中。 还公开了采用超声波脉冲的幅度和通过时间两者的替代实施例。

公开(公告)号：US5553500A

公开(公告)日：1996-09-10

申请号：US329465

申请日：1994-10-26

Applicant: Allen R. Grahn ,  Josephine M. Grahn

Inventor： Allen R. Grahn ,  Josephine M. Grahn

IPC: G01B15/06 ,  G01L1/25 ,  G01L5/16 ,  G01L5/22 ,  G01N29/26

CPC classification number: G01B17/04 ,  G01L1/255 ,  G01L5/16 ,  G01L5/228 ,  G01N2291/02827

Abstract: A triaxial force sensor using a hemispherical target embedded in a compliant layer such as an elastomer and having a plurality of ultrasonic transducers disposed in a plane at equal intervals about the target and vertically and laterally offset from the target. The transducers are oriented at an oblique angle to the plane, and aimed at the target in its rest position. The target is displaced by sufficient force applied to the surface of the compliant layer, which displacement alters the transit times of ultrasonic signals from the transducers which are reflected from the target. If at least three sensor units are employed non-colinearly, the six force-torque components, F.sub.x, F.sub.y, F.sub.z, M.sub.x, M.sub.y, M.sub.z, can be determined from the pulse transit times, the speed-of-sound in the compliant layer, the compressibility of the compliant layer, and the known geometry and spacing of the sensor units. Pairs of transducers may be rotationally offset from each other to determine different force-torque components. A plurality of sensors as described may be employed together in a multi-sensor array. An alternative embodiment employing both the amplitude and the transit time of an ultrasonic pulse is also disclosed.

Abstract translation: 一种三轴力传感器，其使用嵌入柔性层（例如弹性体）中的半球形靶，并且具有多个超声波换能器，所述多个超声波换能器以相等的间隔设置在平面上，并且与目标物垂直和侧向偏移。 换能器被定向成与该平面成倾斜的角度，并将目标瞄准在其静止位置。 目标通过施加到顺应层的表面的足够的力而移位，该位移改变了来自目标反射的换能器的超声波信号的传播时间。 如果非共线性使用至少三个传感器单元，则可以从脉冲传递时间确定六个力 - 转矩分量Fx，Fy，Fz，Mx，My，Mz，柔顺层中的声速 ，柔性层的可压缩性，以及传感器单元的已知几何形状和间距。 换能器对可以彼此旋转地偏移以确定不同的力 - 扭矩分量。 所描述的多个传感器可以一起用于多传感器阵列中。 还公开了采用超声波脉冲的幅度和通过时间两者的替代实施例。