Nondestructive Testing Type Patents (Class 310/336)
  • Patent number: 10336350
    Abstract: An axle of railway wheel sets and a corresponding method for the ultrasound inspection are described. A blind hole, coaxial to the axle and sized to accommodate an ultrasonic probe, is obtained in each end of the axle. Main holes are intended to accommodate the probe holder containing a plurality of ultrasonic transducers for the inspection of the axle from the inside of the hole. The main advantage is to facilitate the propagation of the ultrasounds without being subjected to the interference caused by the geometric discontinuities normally present at the ends of the axles thereby minimizing false positives in the readings of the echoes.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: July 2, 2019
    Assignee: LUCCHINI RS S.P.A.
    Inventors: Stefano Cantini, Steven Cervello
  • Patent number: 10036732
    Abstract: The present invention relates to an ultrasonic inspection device for small bore pipes comprising: a first arc-shaped frame part and a second arc-shaped frame part which surround the circumference of a pipe when combined with the pipe, and which have one side thereof rotationally connected to each other by means of a rotary connecting pin; an adjustment part that connects the other side of the first arc-shaped frame part and the other side of the second arc-shaped frame part to each other and is capable of adjusting the diameter of the bore formed by the first arc-shaped frame part and the second arc-shaped frame part according to the diameter of the pipe; a probe fixing part for fixing a probe to the first arc-shaped frame part such that the probe comes into contact with the surface of the pipe; an encoder part which is provided to the second arc-shaped frame part and maintains an encoder at a predetermined distance from the pipe; and a plurality of roller parts which are provided to the first arc-shaped fram
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 31, 2018
    Assignee: Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Byoung Sik Yoon, Yong Sik Kim, Jeong Seok Lee, Tae Hun Lee
  • Patent number: 9995716
    Abstract: Disclosed herein is a scanning device for performing ultrasonic nondestructive testing of a tube, comprising a housing; the housing having bottom surface that is concavely curved with cavities to accommodate a waveguide assembly and an encoder assembly; where the waveguide assembly comprises a waveguide and a probe that are in communication with one another; the waveguide having at least one surface that is contoured to match an outer surface of the tube; where the waveguide facilitates the transmission of ultrasonic signals into the tube generated by the probe; and where the encoder assembly comprises a spring loaded wheel that contacts the tube; and where the encoder assembly provides a signal indicative of a location of the probe relative to a position on the tube as the scanning device is moved in a direction of a longitudinal axis of the tube.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: June 12, 2018
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Jacques L. Brignac, Larry D. Kidd, Robert Lucas, Christopher Curl
  • Patent number: 9970907
    Abstract: A device and method for performing ultrasound scanning of a substantially cylindrical object, the device comprising a cuff adapted to fit around a circumference of the object, a carrier mounted slidably on the cuff and adapted to traverse the circumference of the object, an ultrasound probe mounted on the carrier and positioned to scan the circumference of the object as the carrier traverses the circumference of the object, a carrier motor mounted on the cuff or the carrier and used to drive the movement of the carrier about the circumference of the object, and one or more data connections providing control information for the carrier motor and the ultrasound probe and receiving scanning data from the ultrasound probe.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 15, 2018
    Assignee: Ontario Power Generation Inc.
    Inventors: Raymond Ten Grotenhuis, Andrew Hong, Zhenxiang Chen, Matt Madill, Shaddy Shokralla, Benedict Cheng Chuen Wong, Scott Preston, Alexander Sakuta
  • Patent number: 9964526
    Abstract: The phased-array probe to be received on a probe receiving area of a wedge generally has a probe housing, a plurality of acoustic transducer elements disposed in the probe housing and distributed along a length of a working surface of the probe housing, and a matching layer covering the plurality of acoustic transducer elements and extending to cover an extended region of the working surface of the probe housing such that the matching layer forms a closed contact with an upper end of an acoustic damping junction of the wedge when the working surface of the probe housing of the phased-array probe is received on the probe receiving area of the wedge, wherein the closed contact prevents acoustic energy from being reflected from the extended region of the working surface of the probe housing.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 8, 2018
    Assignee: Olympus Scientific Solutions Americas Inc.
    Inventor: Jinchi Zhang
  • Patent number: 9903673
    Abstract: An intelligent ball sensor assembly for use with a heat exchanger system, includes a mechanically compliant ball having a recess formed therein. At least one sensor positioned on the ball is configured to gather selected information regarding a heat exchanger system. Signal conditioning control/transmission circuitry is operatively connected to the at least one sensor. A power source is operatively connected to the at least one sensor and the signal conditioning control/transmission circuitry. The sensor and the signal conditioning control/transmission circuitry cooperate to gather information about the status, health and efficiency of the heat exchanger system.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: February 27, 2018
    Assignee: Sentinel Diagnostics, LLC
    Inventors: Charles B. Dirks, Brian G. Jamieson, Michael A. Crocker
  • Patent number: 9841405
    Abstract: A method for calibrating an ultrasonic sensor including a transducer, a reflector spaced a known distance from the transducer, and a memory. A water bath is heated to approximately fifty centigrade and the ultrasonic sensor is at least partially submerged in the water bath. When submerged, an ultrasonic wave is transmitted through a portion of the water bath from the transducer. The ultrasonic wave is transmitted toward the reflector and a reflected ultrasonic wave is received back at the transducer. A time of flight of the ultrasonic wave is measured. A calibration coefficient is determined based on the time of flight of the ultrasonic wave and an expected time of flight of the ultrasonic wave. The calibration coefficient is loaded into the memory of the ultrasonic sensor.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: December 12, 2017
    Assignee: SSI Technologies, Inc.
    Inventor: Gregory P. Murphy
  • Patent number: 9791420
    Abstract: A fluidless roller probe device for performing structural integrity testing. A drum sensor has a shaft, a barrel-shaped inner portion mounted on the shaft, a sensor array having transmit elements and receive elements positioned on an outer surface of the inner portion, and an outer portion positioned over the sensor array. A shaft encoder is coupled to the shaft of the drum sensor. A support structure is coupled to the shaft of the drum sensor. Processing circuitry coupled to the transmit elements and receive elements is configured to activate, based on a signal from the shaft encoder, only that transmit element closest to the surface of the part under test and to calculate an output signal based on signals received from the receive elements. The transmit and receive elements are either ultrasonic transducers or eddy current coils. The transmit and receive elements are arranged in a lattice-like configuration.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 17, 2017
    Assignee: The Boeing Company
    Inventors: Tyler M. Holmes, Jeffrey R. Kollgaard, Gary E. Georgeson
  • Patent number: 9696356
    Abstract: Methods and devices are disclosed for testing an acoustic probe having transducing elements for converting between acoustic and electrical signals. An electrical signal is generated at a frequency with a testing device capable of generating electrical signals over a range of frequencies. The electrical signal is transmitted to at least some of the transducing elements to measure a complex impedance and thereby evaluate a performance of the transducing elements.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 4, 2017
    Assignee: General Electric Company
    Inventors: James Ginther, John Timms, G. Wayne Moore, James Gessert
  • Patent number: 9658193
    Abstract: A rolling ultrasonic scanner comprises a member having an inspection surface for rolling across the surface of an object under test. A plurality of ultrasonic transducers are disposed within the member in a formation such that they are each aimed at a common point that is coincident with the surface of the object.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: May 23, 2017
    Assignee: General Electric Company
    Inventors: Thomas Richard Jenkins, Dane Eugene Hackenberger, Robert Charles Shaffer
  • Patent number: 9646599
    Abstract: A sensor assembly for inspecting a part, the sensor assembly comprising a sensor for sensing a defect of the part and a remoldable housing for retaining and positioning the sensor in alignment with the defect of the part. The housing is formed of a moldable material and may be molded into a shape that conforms to a contour of the part when a stimulus is applied to the housing and may harden into the shape when the stimulus is removed from the housing.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 9, 2017
    Assignee: Spirit AeroSystems, Inc.
    Inventors: David Michael Gayle, Adam Joseph Donar, Nicholas John Pilla
  • Patent number: 9518850
    Abstract: A method for installing a probe assembly in a case of a gas turbine engine is disclosed. The method may include installing a first portion of the probe assembly within a first section of the case, and installing a second portion of the probe assembly within a second section of the case. A case assembly within a gas turbine engine is also disclosed. The case assembly may include a case in at least one of a compressor and a turbine, and a probe assembly. The probe assembly may include a first portion positioned within a bore of the case, and a second portion positioned within an inset of the case, the bore having a smaller diameter than the inset.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: December 13, 2016
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Eli Cole Warren
  • Patent number: 9372174
    Abstract: An ultrasonic inspection probe comprising: a flexible ultrasonic array, a flexible coupling component arranged to ultrasonically couple the flexible ultrasonic array to a workpiece at a coupling boundary surface, a loading component arranged to apply a pressure to the coupling component to a surface opposite the coupling boundary surface to maintain contact between the coupling boundary surface and a workpiece.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: June 21, 2016
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventors: Andrew Bond-Thorley, Richard Freemantle
  • Patent number: 9334066
    Abstract: A mechanism for adjusting the orientation of an end effector (e.g., a non-destructive inspection sensor) during movement over a contoured surface, comprising: (1) a pneumatic or spring-loaded plunger shaft that facilitates positioning of an end effector onto a highly contoured surface by allowing a wide range of vertical motion; (2) a rocker pivotably coupled to a distal end of the plunger shaft, the rocker being pivotable about a horizontal axis to allow a pair of follower wheels coupled to distal ends of the rocker arms to follow the contoured surface and keep the end effector oriented correctly relative to the surface without tipping over; and (3) a hozzle (i.e., an end effector holder) attached to the rocker for rotation therewith, the end effector being coupled to the hozzle by an elastomeric gasket or a plurality of springs which allow the orientation of the end effector relative to the hozzle to change in response to contact forces.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: May 10, 2016
    Assignee: The Boeing Company
    Inventors: William Joseph Tapia, Michael D. Fogarty, Joseph L. Hafenrichter, Gary E. Georgeson
  • Patent number: 9322720
    Abstract: An aluminum nitride piezoelectric ultrasonic transducer successfully operates at temperatures of up to 1000° C. and fast (>1 MeV) neutron fluencies of more than 1018 n/cm2. The transducer comprises a transparent, nitrogen rich aluminum nitride (AlN) crystal wafer that is coupled to an aluminum cylinder for pulse-echo measurements. The transducer has the capability to measure in situ gamma heating within the core of a nuclear reactor.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 26, 2016
    Assignee: U.S. Department of Energy
    Inventors: Bernard R. Wernsman, Raymond J. Blasi, Bernhard R. Tittman, David A. Parks
  • Patent number: 9003887
    Abstract: An ultrasonic sensor includes a cylindrical case having a bottom and a side wall, a piezoelectric element attached to an inner bottom surface of the case, a terminal retainer configured to hold outer terminals and inner terminals, and wires connected to the inner terminals and configured to feed power to the piezoelectric element. The side wall of the case has a thin portion adjacent to an opening of the case and a thick portion adjacent to the bottom of the case. The elastic member is provided between the thick portion and the terminal retainer. An opening region surrounded by the thick portion is preferably covered with the elastic member. The case is preferably internally filled with a filler.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: April 14, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Taku Matsumoto
  • Patent number: 8941287
    Abstract: The present disclosure relates to a system for monitoring a structural component. The system may include an electromechanical device to generate guided waves having a measurement surface and a bonding agent disposed on the measurement surface and configured to engage with the surface of the structural component. The system may also include a heating element for heating the measurement surface, the bonding agent, and capable of heating a portion of the structural component surface. In addition, the system may include a clamp for retaining the measurement surface relative to the structural component.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: January 27, 2015
    Assignee: Southwest Research Institute
    Inventors: Sergey A. Vinogradov, Hegeon Kwun, Glenn M. Light
  • Patent number: 8939911
    Abstract: The ultrasonic probe comprises an ultrasonic transducer section in which a plural of ultrasonic transducers arranged in a row in the scanning direction, an acoustic lens and a low attenuation medium, and further comprises a probe shell housing the ultrasonic transducer section, acoustic lens, and low attenuation medium. In the probe shell, the low attenuation medium is located at the top end (contact surface with a subject to be examined) of the ultrasonic probe, and the low attenuation medium, acoustic lens, and ultrasonic transducer section are located in order. In this way, the ultrasonic waves transmitted from the ultrasonic transducer section are converged by the acoustic lens and transmitted outside the probe shell through the low attenuation medium. The reflection waves from the subject to be examined are received by the ultrasonic transducer section through the low attenuation medium.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: January 27, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Hideki Kosaku
  • Publication number: 20140312739
    Abstract: A high temperature ultrasonic probe and a mounting fixture for attaching and aligning the probe to a steam pipe using blind alignment. The high temperature ultrasonic probe includes a piezoelectric transducer having a high temperature. The probe provides both transmitting and receiving functionality. The mounting fixture allows the high temperature ultrasonic probe to be accurately aligned to the bottom external surface of the steam pipe so that the presence of liquid water in the steam pipe can be monitored. The mounting fixture with a mounted high temperature ultrasonic probe are used to conduct health monitoring of steam pipes and to track the height of condensed water through the wall in real-time.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 23, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Yoseph Bar-Cohen, Mircea Badescu, Shyh-Shiuh Lih, Stewart Sherrit, Nobuyuki Takano, Patrick N. Ostlund, Hyeong Jae Lee, Xiaoqi Bao
  • Patent number: 8841823
    Abstract: A wear cap including a flexible barrel and a rigid disc enables a high-frequency ultrasonic transducer to properly align to the surface of a material to be tested. The wear cap may be employed for any type of contact sensor that requires a protective wear cap and that needs to align to the surface of a material to be tested. An ultrasonic transducer assembly includes a wear cap and an ultrasonic transducer. The ultrasonic transducer is mounted in the wear cap and includes a transducer body with a cylindrical shape. A method of producing a wear cap for an ultrasonic transducer includes selecting a flexible material, forming a flexible barrel from the flexible material, selecting a rigid material, forming a rigid disc from the rigid material, and affixing the rigid disc to an end of the flexible barrel.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 23, 2014
    Assignee: Ascent Ventures, LLC
    Inventor: Todd Jackson
  • Publication number: 20140269204
    Abstract: Piezoelectric micromachined ultrasonic transducer (pMUT) arrays and techniques for frequency shaping in pMUT arrays are described, for example to achieve both high frequency and low frequency operation in a same device. The ability to operate at both high and low frequencies may be tuned during use of the device to adaptively adjust for optimal resolution at a particular penetration depth of interest. In embodiments, various sizes of piezoelectric membranes are fabricated for tuning resonance frequency across the membranes. The variously sized piezoelectric membranes are lumped together by two or more separate electrode rails, enabling independent addressing between the two or more subgroups of sized transducer elements. Signal processing of the drive and/or response signals generated and/or received from each of the two or more electrode rails may achieve a variety of operative modes for the device, such as a near field mode, a far field mode, and an ultra wide bandwidth mode.
    Type: Application
    Filed: May 28, 2014
    Publication date: September 18, 2014
    Inventor: Arman HAJATI
  • Patent number: 8824243
    Abstract: In an ultrasonic transducer unit comprising a plurality of ultrasonic transducers, each of the ultrasonic transducers is provided with a recess formed in one face of an insulating substrate, and a substrate-side electrode is buried in a bottom of the recess, and a vibrating membrane is formed so as to cover the recess.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: September 2, 2014
    Assignee: Ingen MSL Inc.
    Inventor: Seung-Mok Lee
  • Publication number: 20140221840
    Abstract: Provided are an ultrasound transducer, an ultrasound probe including the ultrasound transducer, and ultrasound diagnostic equipment including the ultrasound probe. The ultrasound transducer includes a piezoelectric unit including a plurality of piezoelectric elements which vibrate to convert ultrasound waves into electrical signals and electrical signals back into ultrasound waves, and a dummy piezoelectric unit which is disposed at edges of the effective piezoelectric unit and includes a plurality of dummy piezoelectric elements which vibrate due to vibration of the piezoelectric unit.
    Type: Application
    Filed: September 25, 2013
    Publication date: August 7, 2014
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventors: Jong-sun KO, Gil-ju JIN, Jung-lim PARK, Dong-hyun KIM
  • Patent number: 8789422
    Abstract: An electromagnetic-acoustic transducer for ultrasonic testing of test objects which are composed substantially of an electrically conductive material includes a magnet system that produces a magnetic field intended to penetrate into the test object, and an inductive coil arrangement that produces an electromagnetic alternating field superimposed on this magnetic field in the test object, and that detects electromagnetic alternating fields emitted from the test object, wherein magnet system is arranged in a magnetization unit, the coil arrangement is arranged in a probe unit separate from the magnetization unit, the probe unit is mounted such that it can move relative to the magnetization unit in the area of the magnetic field.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: July 29, 2014
    Assignee: Institut Dr. Foerster GmbH & Co. KG
    Inventors: Michael Ege, Jürgen Wanner
  • Patent number: 8784319
    Abstract: An ultrasonic probe includes at least one transmission element layer for transmitting ultrasonic waves, at least one reception element layer for receiving ultrasonic waves and which is provided with an electrode on each of both surfaces opposed in a direction of a thickness thereof, and at least one matching layer for matching acoustic impedance. These layers are arranged in this order in a direction of transmitting the ultrasonic waves. The reception element layer is provided with a projecting portion projecting in a direction of elevation from upper and lower layers which sandwich the two electrodes respectively formed on both surfaces of the reception element layer, and at least one of the electrodes is formed by extending to the projecting portion.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: July 22, 2014
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Hiroshi Ishidai, Hiromi Akahori
  • Patent number: 8715531
    Abstract: A conductive polymer doped with a dopant can be expanded and contracted when electrically oxidized and reduced in a driving electrolytic solution containing an anion, and thereby can act as an actuator element in an actuator. The anion is a fluorine-containing ion derived from a strong acid, and the dopant is an aromatic sulfonate ion free of fluorine. The conductive polymer is a polymer containing a 5-membered heterocyclic moiety as a repeating unit, such as a polypyrrole or a polythiophene. When the conductive polymer is in an oxidized state, at least part of the 5-membered heterocyclic moieties has a carbonyl group.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: May 6, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Pu Qian, Kazuhiro Kagawa, Akihisa Tanaka
  • Patent number: 8680745
    Abstract: A piezoelectric sensing device is described for measuring material thickness of targets such as pipes, tubes, and other conduits that carry fluids. The piezoelectric sensing device includes a piezoelectric element mounted to a flexible circuit with glass reinforced polyimide C-stage cover layers surrounding a pure polyimide C-stage core.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: March 25, 2014
    Assignee: General Electric Company
    Inventors: Fred Timothy Matthews, Paul Aloysius Meyer, Matthew Harvey Krohn, Nathan John Smith, Adeodato Maria Vigano
  • Publication number: 20140070669
    Abstract: A micromachined ultrasonic transducer (MUT) array includes a printed circuit board, an alignment plate formed on the printed circuit board, the alignment plate having a plurality of cavities formed therein and a plurality of protruding portions respectively formed between neighboring cavities of the plurality of cavities, and a plurality of MUT modules formed on the plurality of the cavities and the plurality of the protruding portions of the alignment plate. In the MUT array, each of the plurality of MUT modules includes an application-specific integrated circuit (ASIC) arranged on the alignment plate and an MUT arranged on the ASIC.
    Type: Application
    Filed: August 2, 2013
    Publication date: March 13, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Byung-gil JEONG
  • Publication number: 20140036633
    Abstract: An array of ultrasonic transducers is formed on a piezoelectric polymer foil. Ultrasonic transducer electrodes are formed on a first side of the foil and a ground layer is formed on a second side of the foil.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: General Electric Company
    Inventor: York Oberdoerfer
  • Publication number: 20140028154
    Abstract: The present disclosure relates to a system for monitoring a structural component. The system may include an electromechanical device to generate guided waves having a measurement surface and a bonding agent disposed on the measurement surface and configured to engage with the surface of the structural component. The system may also include a heating element for heating the measurement surface, the bonding agent, and capable of heating a portion 100 of the structural component surface. In addition, the system may include a clamp for retaining the measurement surface relative to the structural component.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 30, 2014
    Applicant: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Sergey A. VINOGRADOV, Hegeon KWUN, Glenn M. LIGHT
  • Patent number: 8618719
    Abstract: A power generation device that provides power to an auxiliary system on an airborne platform, includes a piezoelectric energy harvesting device and an energy storage unit, including a battery and a power conditioner. The device extracts energy generated by turbulent airflow around the platform and stores the energy to meet future power requirements. The piezoelectric energy harvesting device is located on a portion of an inner surface of an outward shell of the platform. The stand-alone power generation device is electrically connected to the auxiliary system. The stand-alone power generation device also includes a router that connects the power generation unit to the platform electrical distribution system. Excess power generated by the device may be delivered to the platform electrical distribution system for use by other platform systems.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: December 31, 2013
    Assignee: The Boeing Company
    Inventors: Arvin Shmilovich, Michael A. Carralero
  • Publication number: 20130308425
    Abstract: An ultrasonic transducer includes a substrate, a supporting film, and a piezoelectric element. The substrate includes an opening. The supporting film is configured on the substrate to cover the opening. The piezoelectric element is configured at a part of the supporting film. The part overlaps with the opening in a planar view in a thickness direction of the substrate. A thickness of the part of at a center of gravity in the planar view is smaller than a thickness of an outer edge portion of the part. The outer edge portion is closer to the substrate than the center to the substrate.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 21, 2013
    Inventors: Tomoaki NAKAMURA, Hironori SUZUKI, Jiro TSURUNO
  • Publication number: 20130281857
    Abstract: An ultrasonic transducer, an ultrasonic probe, and an ultrasound image diagnosis apparatus include a plurality of piezoelectric elements arranged in at least one column; individual electrodes provided on at least one surface of top and bottom surfaces of each of the piezoelectric elements; side electrodes extending toward one side surfaces of the piezoelectric elements from the individual electrodes; and a side electrode substrate including wiring lines that are bonded to the one side surfaces of the piezoelectric elements and are electrically connected to the side electrodes, respectively.
    Type: Application
    Filed: December 7, 2012
    Publication date: October 24, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyun-phill KO, Jong-mock Lee
  • Patent number: 8547000
    Abstract: An ultrasonic transducer for an ultrasonic, flow measuring device comprising an electromechanical transducer element and an ultrasound window, wherein an adapting, or matching, layer liquid at operating conditions of the ultrasonic transducer is arranged between the electromechanical transducer element and the ultrasound window, wherein the ultrasonic transducer has holding means, which exert a releasable force toward the ultrasound window on the electromechanical transducer element, in order to hold the electromechanical transducer element in a predetermined position relative to the ultrasound window.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: October 1, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Pierre Ueberschlag, Michal Bezdek, Andreas Berger
  • Publication number: 20130241356
    Abstract: Disclosed herein is a probe for an ultrasonic diagnostic apparatus including a transducer module that transmits and receives ultrasonic waves. The transducer module includes a piezoelectric device transmitting and receiving ultrasonic waves, at least one matching layer disposed on the front surface of the piezoelectric device, a backing layer disposed on the rear surface of the piezoelectric device, a backing block disposed on the rear surface of the backing layer, and a gas layer disposed between the backing layer and the backing block. Since acoustic energy proceeding in the backward direction of the piezoelectric device is reflected by the gas layer toward the piezoelectric device, sensitivity of the transducer module is improved.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventors: Ji Seon Kim, Mi-Ri Kim, Jung-Lim Park, Min Seon Seo
  • Patent number: 8513860
    Abstract: An acoustic transducer is disclosed in which a set of electrode arrays is arranged around a nominal center point and comprising a set of circumferentially disposed electrode elements. A piezoelectric material is located between a common electrode and said electrode elements.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: August 20, 2013
    Assignee: Airbus Operations Limited
    Inventor: Christophe Paget
  • Publication number: 20130200755
    Abstract: An ultrasonic probe is provided and includes a matching layer providing conductivity by forming an electrode in the matching layer. A method of manufacturing the ultrasonic probe is also described. The ultrasonic probe includes a piezoelectric material and at least one matching layer disposed on the front surface of the piezoelectric material and includes an electrode.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 8, 2013
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventor: SAMSUNG MEDISON CO., LTD.
  • Publication number: 20130193805
    Abstract: A transducer with triangular cross-sectional shaped pillars is described for suppressing lateral modes within a composite, and a method for producing the same. According to one aspect of the present application, a plurality of triangular cross-sectional shaped pillars extends outwardly from a substrate and form an array of pillars. The resulting array of pillars is configured to suppress the lateral modes of the transducer at higher operating frequencies, such as, at or above 15 MHz, at or above 20 MHz, or at or above 30 MHz.
    Type: Application
    Filed: November 13, 2012
    Publication date: August 1, 2013
    Inventors: Jeremy Brown, F. Stuart Foster, Jianhua Yin
  • Publication number: 20130181577
    Abstract: An ultrasonic probe including a matching layer providing conductivity via an electrode formed on a surface contacting a piezoelectric material, and a manufacturing method thereof. The method of manufacturing an ultrasonic probe includes forming kerfs on a surface of the matching layer, forming an electrode on the surface of the matching layer at which the kerfs are formed, or on an opposite surface thereof, and mounting the surface provided with the electrode on the piezoelectric material.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 18, 2013
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventor: SAMSUNG MEDISON CO., LTD.
  • Publication number: 20130169818
    Abstract: An ultrasonic transducer, an ultrasonic probe, and an image diagnosis apparatus perform an ultrasonic procedure. The ultrasonic transducer includes: a piezoelectric layer; an acoustic matching layer disposed on an upper surface of the piezoelectric layer; and a plurality of back efficiency layers that are disposed on a lower surface of the piezoelectric layer and have different acoustic impedances. The sensitivity, bandwidth, and pulse length of the ultrasonic transducer may be controlled by appropriately changing acoustic impedances and thicknesses of the back efficiency layers.
    Type: Application
    Filed: November 29, 2012
    Publication date: July 4, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Samsung Electronics Co., Ltd.
  • Patent number: 8368289
    Abstract: A laser opto-acoustic apparatus and method is applied for nondestructive testing of defects and residual stresses in solids. A nondestructive testing apparatus may have a piezoelectric transducer for measuring oscillations in a solid. The oscillations or waves may be caused from longitudinal, shear, and/or Raleigh waves in the object to be tested. The nondestructive testing apparatus may also include a laser. The laser is capable of generating the longitudinal, shear, and/or Raleigh waves in the object. One method of performing nondestructive testing of materials may include creating at least one of a longitudinal, shear, and/or Raleigh wave in an object and measuring the speed of the wave in the object. The speed of the waves may be compared with the speed of waves in a material without defects to determine whether the object to be tested has defects.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: February 5, 2013
    Assignee: SpectraQuest, Inc.
    Inventors: Alexander Karabutov, Mikhail Lyamshev, Vladislav Mikhalevich, Manomohan Subudhl, Upendra Rohatgl
  • Publication number: 20130016587
    Abstract: In an ultrasonic transducer unit comprising a plurality of ultrasonic transducers, each of the ultrasonic transducers is provided with a recess formed in one face of an insulating substrate, and a substrate-side electrode is buried in a bottom of the recess, and a vibrating membrane is formed so as to cover the recess.
    Type: Application
    Filed: February 28, 2011
    Publication date: January 17, 2013
    Applicant: Ingen MSL INC.
    Inventor: Seung-Mok Lee
  • Publication number: 20130002094
    Abstract: An impedance conversion layer useful for medical imaging ultrasonic transducers comprises a low impedance polymer layer and a high impedance metal layer. These layers are combined with corresponding thicknesses adapted to provide a function of converting from a specific high impedance to specific low impedance, wherein the polymer layer is at the high impedance side and the metal layer is at the low impedance side. The effective acoustic impedance of the polymer and metal layer combination may be adapted to configure an impedance converter in the same way as a quarter wavelength impedance converter, converting from low impedance to high impedance (metal to polymer) or from a high impedance to low impedance (polymer to metal). This structure may be used for front matching with the propagation medium and back matching with an absorber for ultrasonic transducers.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: MEASUREMENT SPECIALTIES, INC.
    Inventors: Minoru Toda, Mitchell L. Thompson
  • Publication number: 20120294124
    Abstract: A piezoelectric sensing device is described for measuring material thickness of target such as pipes, tubes, and other conduits that carry fluids. The piezoelectric sensing device comprises a substrate such as a flexible circuit material, a piezoceramic element, and a solder layer disposed therebetween. These features are arranged in manner that provides a low-profile measurement device suitable for high-temperature applications such as those applications in which the temperature exceeds 120° C. Embodiments of the piezoelectric sensing device can be configured for use as stand-alone units separately located on the target or for use as a string of sensing elements coupled together by way of the flexible circuit material.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 22, 2012
    Inventors: Matthew Krohn, Paul Aloysius Meyer, James Norman Barshinger, Ying Fan, Fred Matthews, Nathan Smith
  • Publication number: 20120293046
    Abstract: An interactive panel including a substrate, wherein a seismic wave is intended to propagate, and at least two piezoelectric transduction devices each including two piezoelectric transducers. Each piezoelectric transducer includes two piezoelectric elements each with two surfaces each covered by an electrode. The four electrodes of each piezoelectric transducer are interconnected to supply, when opposing stresses are applied to the piezoelectric elements of the transducer, an electrical measurement signal that depends on the angle between a main plane and an opposite stress-separation plane. Two piezoelectric transducers of a same device have a same central axis and their respective main planes form a non-zero angle thereinbetween. Each piezoelectric transduction device is attached to the substrate such that movement of the substrate during passage of the seismic wave causes stress on the piezoelectric elements, in opposite directions on either side of the stress-separation plane.
    Type: Application
    Filed: February 1, 2011
    Publication date: November 22, 2012
    Applicant: Commissariat a l'energie atomique et aux energies alternatives
    Inventor: Jean-Pierre Nikolovski
  • Publication number: 20120253698
    Abstract: The invention provides an integrated Phased Array (PhA) structural radar transducer, permanently bonded to a structure, that can provide reliable electromechanical connection with corresponding miniaturized electronic SHM device installed above it. The integrated PhA transducer consists of a set of aligned piezo-electric discs with wrap around electrodes for transceiving of elastic ultrasonic waves, plurality of electrical traces and contact pads, several layers of a flexible printed circuit board, electromagnetic shielding between channels and overall, one electromechanical multi-pinned connector and all that integrated into one small unit easy for surface installation by bonding and final application on real structures.
    Type: Application
    Filed: February 21, 2012
    Publication date: October 4, 2012
    Inventor: Valerijan Cokonaj
  • Patent number: 8278799
    Abstract: A system and method for determining optimal values for the geometrical features of an ultrasonic transducer having one or more elements, the method including backprojection ray-tracing to determine the parameters required for apertures located on an ultrasonic probe surface. The ultrasonic probe design system includes an interface for inputting statement parameters, insonification requirements, and geometric constraints, with an engine responsive to the interface and configured to determine and provide an optimized transducer geometric design output.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: October 2, 2012
    Inventor: Vincent Lupien
  • Patent number: 8264127
    Abstract: The present invention provides a low frequency acoustic transducer for non-destructive testing of a test structure. The transducer is arranged for conversion between electrical energy and acoustic energy associated with an acoustic wave propagating through a portion of the test structure. The transducer comprises a bending actuator for generating the acoustic wave by generating a vibration from an electrical signal or for generating an electrical signal from a vibration generated by the received acoustic wave. The bending actuator has a vibration surface and a contact area surrounded by a portion of the vibration surface. The transducer further comprises a mode setting member that has a rigid portion which is in direct mechanical contact with the bending actuator at the contact area such that, within the contact area, an amplitude of the vibration is substantially suppressed. The location and shape of the contact area determine a bending mode associated with a resonance frequency of the bending actuator.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: September 11, 2012
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Laurence Dickinson, Graeme Edwards, Adam Batten
  • Patent number: 8258678
    Abstract: An apparatus comprises a first transducer support configured to receive a first transducer in a first opening. A face of the first face of the transducer is located in a first plane. The apparatus also comprises a second transducer support configured to receive a second transducer in a second opening. A face of the second transducer is located in a second plane substantially parallel to the first plane.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: September 4, 2012
    Assignee: Avago Technologies Wireless IP (Singapore) Pte. Ltd.
    Inventors: Osvaldo Buccafusca, Steven Martin, Bruce Beaudry
  • Patent number: 8246545
    Abstract: A phased array ultrasound transducer is made from a plurality of independently excitable elements that are arranged in a row in the azimuthal direction, configured so that azimuthal aiming of an outgoing ultrasound beam is controlled by timing the excitation of the elements. The geometry of the elements is configured to focus the outgoing beam in the elevation direction so as to improve the images of target regions located at or about a particular radial distance. In some embodiments, this is accomplished by forming each element from a plurality of subelements that are stacked in the elevation direction, with the subelements of any given element all (a) wired together and (b) positioned at about the same distance from a substantially rod-shaped focal region.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 21, 2012
    Assignee: Imacor Inc.
    Inventors: Harold M. Hastings, Scott L. Roth