公开(公告)号：US20180292356A1

公开(公告)日：2018-10-11

申请号：US15964967

申请日：2018-04-27

Applicant: Chevron U.S.A. Inc. ,  Los Alamos National Security, LLC

Inventor： Alp T. Findikoglu ,  Dipen N. Sinha ,  Daniel R. Chapman

IPC: G01N29/04 ,  G01N29/07 ,  G01N29/44 ,  G01N29/34 ,  G01N29/46

CPC classification number: G01N29/043 ,  G01N29/07 ,  G01N29/343 ,  G01N29/348 ,  G01N29/42 ,  G01N29/4409 ,  G01N29/4463 ,  G01N29/4472 ,  G01N29/449 ,  G01N29/46 ,  G01N2291/011 ,  G01N2291/0258 ,  G01N2291/0425 ,  G01N2291/048 ,  G01N2291/102 ,  G01N2291/2634

Abstract: Methods for detection, monitoring, and determination of location of changes in rigid structures with arbitrarily complex geometries are described. Implementations include locating acoustic transducers that generate and receive acoustic signals at multiple locations along a surface of the rigid structure, wherein longitudinal spacing between the transducer locations define measurement zones. Acoustic signals with chosen amplitude-time-frequency characteristics excite multiple vibration modes in the structure within each zone. Small mechanical changes in the inspection zones lead to scattering and attenuation of broadband acoustic signals, which are detectable as changes in received signal characteristics as part of a through-transmission technique. Additional use of short, narrowband pulse acoustic signals as part of a pulse-echo technique allows determination of the relative location of the mechanical change within each zone based on the differential delay profiles.

公开(公告)号：US09989498B2

公开(公告)日：2018-06-05

申请号：US14766219

申请日：2014-02-05

Applicant: The Regents of the University of California

Inventor： Francesco Lanza di Scalea ,  Claudio Nucera

IPC: G06F19/00 ,  G01N29/07 ,  G01N29/11 ,  G01N29/46 ,  G01M5/00

CPC classification number: G01N29/07 ,  G01M5/0025 ,  G01M5/0041 ,  G01M5/0066 ,  G01N29/11 ,  G01N29/46 ,  G01N2291/02491 ,  G01N2291/02827 ,  G01N2291/0423 ,  G01N2291/0425 ,  G01N2291/2623 ,  G01N2291/2634

Abstract: Methods and apparatus, including computer program products, are provided for nonlinear ultrasonic testing. In one aspect there is provided a method, which may include generating at least one ultrasonic wave to enable the at least one ultrasonic wave to propagate through a solid; detecting the at least one ultrasonic wave propagating through the solid; and determining a stress of the solid based on at least one of an imaginary component of a wavenumber, a wave amplitude, a wave strength, a statistical moment in a time domain, or a statistical moment in a frequency domain of the at least one ultrasonic wave.

公开(公告)号：US20180136170A1

公开(公告)日：2018-05-17

申请号：US15567071

申请日：2016-04-15

Applicant: ALMA MATER STUDIORUM-UNIVERSITA DI BOLOGNA

Inventor： Luca DE MARCHI ,  Nicola TESTONI ,  Alessandro MARZANI

IPC: G01N29/12 ,  G01N29/46 ,  G01N29/26

CPC classification number: G01N29/12 ,  G01N29/2475 ,  G01N29/262 ,  G01N29/4472 ,  G01N29/46 ,  G01N2291/0258 ,  G01N2291/0425 ,  G01N2291/106 ,  G01S15/8915 ,  G01S15/8952 ,  G10K11/343

Abstract: The present invention relates to a method for making a device for monitoring the structural integrity of structures such as beams, plates and shells, made of isotropic, anisotropic and/or laminated material, and to such a device. The method provides to define a asymmetric directivity function D(k1,k2) that has, in the domain of wave numbers, a plurality of maxima arranged on different concentric circumferences having center in the origin of the axes. Then a load distribution in spatial coordinates f(x1,x2) is computed by inverse Fourier transform of the directivity function D(k1,k2). Then therefore the device is made with the electrodes, whose shape is obtained by gathering the values of the load distribution f(x1,x2) in the plane having for coordinates the set of real numbers and imaginary numbers, defining at least two sectors of said plane that comprise at least one real value and one imaginary value.

公开(公告)号：US09950715B2

公开(公告)日：2018-04-24

申请号：US14389052

申请日：2013-04-02

Applicant: The Regents of the University of California

Inventor： Francesco Lanza di Scalea

IPC: G01N29/24 ,  B61K9/00 ,  B61K9/10 ,  G01B17/04 ,  G01N29/12 ,  G01N29/44 ,  G01N29/46 ,  G01B17/00 ,  B06B1/02 ,  B60T17/18 ,  G01D5/12 ,  G01N29/04

CPC classification number: B61K9/00 ,  B06B1/02 ,  B60T17/18 ,  B61K9/10 ,  G01B17/00 ,  G01B17/04 ,  G01D5/12 ,  G01N29/04 ,  G01N29/12 ,  G01N29/2462 ,  G01N29/4436 ,  G01N29/46 ,  G01N2291/0425 ,  G01N2291/2623

Abstract: In some example implementations, there is provided a method. The method may include generating, by an air-coupled transducer, a first ultrasonic guided wave to cause the generated ultrasonic guided wave to propagate into a rail being tested for one or more defects, wherein a frequency of the first ultrasonic guided wave is controlled by at least changing the frequency of a voltage sent to the air-coupled transducer generating the first ultrasonic guided wave; receiving, by a receiver, a second ultrasonic guided wave, wherein the second ultrasonic guided wave is received from the rail; and analyzing a signal representative of the received second ultrasonic guided wave to detect the one or more defects in the rail. Related systems, methods, and articles of manufacture are also provided.

公开(公告)号：US09910016B2

公开(公告)日：2018-03-06

申请号：US14878595

申请日：2015-10-08

Applicant: FBS, Inc.

Inventor： Cody J. Borigo ,  Steven E. Owens ,  Joseph L. Rose

IPC: G01N29/07 ,  G01N29/04 ,  G01N29/34 ,  G01N29/06 ,  G01N29/26

CPC classification number: G01N29/043 ,  G01N29/069 ,  G01N29/07 ,  G01N29/262 ,  G01N29/343 ,  G01N2291/0422 ,  G01N2291/0425 ,  G01N2291/2694

Abstract: An ultrasonic guided wave system for defect detection in a plate-like structure, includes at least one first circumferentially-polarized piezoelectric d15 shear ring element configured to be coupled to a structure. The controller includes a machine readable storage medium and a processor in signal communication with the machine readable storage medium. The processor is configured to cause a pulse generator to pulse the at least first circumferentially-polarized piezoelectric d15 shear ring element such that shear horizontal-type guided wave energy is transmitted in all directions in the plate-like structure, process at least one guided wave signal to identify the presence and location of at least one possible defect in the plate-like structure, and store the guided wave signal and defect detection data in the machine readable storage medium.

公开(公告)号：US20170131242A1

公开(公告)日：2017-05-11

申请号：US15322064

申请日：2015-06-24

Applicant: QI2 Elements, LLC

Inventor： Haraprasad KANNAJOSYULA ,  Giovanni NINO ,  Phillip D. BONDURANT ,  Vincent FRATELLO

IPC: G01N29/26 ,  G01N29/04

CPC classification number: G01N29/262 ,  G01N29/04 ,  G01N29/11 ,  G01N2291/011 ,  G01N2291/014 ,  G01N2291/0425 ,  G01N2291/044 ,  G01N2291/106 ,  G01N2291/2634

Abstract: A method of inspecting a pipe for flaws includes emitting ultrasonic waves, controlling the emission of the ultrasonic waves, receiving reflections of the ultrasonic waves, and determining at least one characteristic of one or more flaws. The ultrasonic waves are emitted in a helical pattern through the pipe from an array of ultrasonic transducer elements. The emission of the ultrasonic waves from the array is controlled such that the ultrasonic waves are emitted at a plurality of helical angles within a range of helical angles. The reflections of the ultrasonic waves are caused by impingement of the ultrasonic waves on the one or more flaws. The at least one characteristic of the one or more flaws is determined based on the received reflections of the ultrasonic waves.

公开(公告)号：US09551691B2

公开(公告)日：2017-01-24

申请号：US13639466

申请日：2010-05-11

Applicant: Koki Daikoku ,  Masato Yoshizaki ,  Shuichi Sato

Inventor： Koki Daikoku ,  Masato Yoshizaki ,  Shuichi Sato

IPC: G01N29/24 ,  G01N29/04

CPC classification number: G01N29/2412 ,  G01H11/04 ,  G01N29/043 ,  G01N2291/0289 ,  G01N2291/0425 ,  G01N2291/2634 ,  H01L41/12

Abstract: An L-mode guided wave sensor 10 for inspecting an inspection target by using an L-mode guided wave. The L-mode guided wave sensor 10 is provided with a vibrator 3 which is attached to an inspection target 1, and a coil 5 which is wound around the vibrator 3 and to which an AC voltage is applied. The vibrator 3 is made of a ferromagnetic material.

Abstract translation: L模式导波传感器10，用于通过使用L模式导波来检查检查对象。 L模式波导传感器10具有安装在检查对象1上的振动体3和缠绕在振动体3上并且施加有交流电压的线圈5。 振动器3由铁磁材料制成。

公开(公告)号：US09500626B2

公开(公告)日：2016-11-22

申请号：US14078919

申请日：2013-11-13

Applicant: Southwest Research Institute

Inventor： Sergey A. Vinogradov ,  Matthew L. Capps

IPC: G01N29/22 ,  G01N29/11 ,  G01N29/24 ,  G01N17/00

CPC classification number: G01N29/223 ,  G01N17/00 ,  G01N29/11 ,  G01N29/2437 ,  G01N2291/0258 ,  G01N2291/0425 ,  G01N2291/044 ,  G01N2291/26

Abstract: A system and method for non-destructive monitoring a component including a guided wave sensor positioned around a surface of the component, wherein the component has a perimeter. A first spring mounting clamp positioned around the component perimeter and a second spring mounting clamp positioned around the component perimeter, wherein the first and second mounting clamps are positioned a distance of 0.1 inches to 5.0 inches on either side of the guided wave sensor. A plurality of elongated springs is attached at a first end to the first spring mounting clamp and attached at a second end to the second spring mounting clamp. The central portion applying a pressure of at least 10 psi to the guided wave sensor.

Abstract translation: 一种用于非破坏性监测包括围绕所述部件的表面定位的导波传感器的部件的系统和方法，其中所述部件具有周边。 围绕组件周边定位的第一弹簧安装夹具和围绕组件周边定位的第二弹簧安装夹具，其中第一和第二安装夹具在导波传感器的任一侧上定位为0.1英寸至5.0英寸的距离。 多个细长弹簧在第一端附接到第一弹簧安装夹具并且在第二端附接到第二弹簧安装夹具。 中心部分向导波传感器施加至少10psi的压力。

公开(公告)号：US20150253238A1

公开(公告)日：2015-09-10

申请号：US14641418

申请日：2015-03-08

Applicant: ACOUSTICEYE LTD

Inventor： Dov Furman

IPC: G01N19/08 ,  G01D5/14 ,  B06B1/06

CPC classification number: G01N19/08 ,  B06B3/00 ,  G01M5/0025 ,  G01M5/0033 ,  G01M5/0066 ,  G01N29/11 ,  G01N2291/0425 ,  G01N2291/2636

Abstract: A tube inspection system that includes a guided-wave-transducer mechanism (GWTM) that is associated with a tube that is being inspected. The GWTM can have one ring with ‘N’ guided-wave transducers (GWTs) distributed thereon, and another ring with ‘M’ guided-wave transducers (GWTs) distributed thereon. A controller excites mechanical waves by the GWTs of the first ring that propagate in the wall of the tube being inspected and along its axis. The ‘M’ GWTs of the second ring obtain received mechanical waves and convert them to electronic signals. The ‘M’ electronic signals are processed to provide a measured signal in which a wanted mode is enhanced.

Abstract translation: 管检查系统，其包括与被检查的管相关联的导波换能器机构（GWTM）。 GWTM可以具有分布在其上的'N'导波换能器（GWT）的一个环，并且另外具有分布在其上的'M'导波变换器（GWT）的环。 控制器通过第一环的GWT激发机械波，该GWT在被检测的管的壁中沿其轴线传播。 第二环的“M”GWT获得接收的机械波并将其转换为电子信号。 处理“M”电子信号以提供其中所需模式被增强的测量信号。

公开(公告)号：US09074995B2

公开(公告)日：2015-07-07

申请号：US13672198

申请日：2012-11-08

Applicant: Korea Research Institute of Standards and Science

Inventor： Seung Hyun Cho ,  Bong Young Ahn ,  Tae Hoon Heo

IPC: G01N29/04 ,  H04R15/00 ,  G01N29/22 ,  G01N29/26 ,  G01N29/24 ,  B06B1/08

CPC classification number: G01N29/262 ,  B06B1/085 ,  G01N29/2412 ,  G01N2291/0425 ,  G01N2291/106

Abstract: A magnetostrictive phased array transducer for transducing shear horizontal bulkwaves including a plurality of magnetostrictive members each having a bottom surface of a plate-shaped structure made of a ferromagnetic material, which is mounted to be adhered closely to the surface of a mounting place; an insulator disposed on a side surface of each magnetostrictive member; a meander coil having a plurality of coil lines extended in the direction parallel with the bottom surface on each insulator, wherein adjacent coil lines are connected so that current flows in the opposite directions to each other, thereby generating a dynamic magnetic field with respect to each magneto strictive member; and a magnet mounted to generate a static magnetic field perpendicular to the dynamic magnetic field. When the current is supplied to the meander coil, a plurality of magnetostrictive members generate a plurality of shear horizontal bulkwaves while being deformed by the magnetostriction effect.

Abstract translation: 一种用于转换剪切水平横波的磁致伸缩相控阵变换器，包括多个磁致伸缩构件，每个磁致伸缩构件具有由铁磁材料制成的板状结构的底表面，其被安装成紧密地粘附到安装位置的表面; 设置在每个磁致伸缩构件的侧表面上的绝缘体; 一个曲折线圈，具有在每个绝缘体上与底表面平行的方向上延伸的多个线圈线，其中相邻的线圈线被连接成使得电流在相反的方向彼此流动，从而相对于每个线圈产生动态磁场 磁致密构件; 以及安装成产生垂直于动态磁场的静磁场的磁体。 当电流被提供给曲折线圈时，多个磁致伸缩构件在被磁致伸缩效应变形的同时产生多个剪切水平横波。