For Flaw Or Discontinuity Detection Patents (Class 73/598)
  • Publication number: 20130111995
    Abstract: The invention relates to a method of nondestructive and contactless testing of components (3), wherein ultrasonic waves (6) are irradiated onto the surface of the component (3) at a predefinable, non-perpendicular angle of incidence (9) using an ultrasonic transmission sound transducer (1) arranged spaced apart from the surface of the component (3) and the intensity of the ultrasonic waves (7) reflected from the surface of the component (3) is detected with time resolution and/or frequency resolution by the antenna array elements (2n) of an ultrasonic antenna array (2) configured for detecting ultrasonic waves (7) and the phase shift of the ultrasonic waves guided at the surface of the test body is determined therefrom with respect to the ultrasonic waves (7) directly reflected at the surface of the component (3).
    Type: Application
    Filed: July 14, 2011
    Publication date: May 9, 2013
    Inventors: Bernd Koehler, Martin Barth, Joachim Bamberg, Hans-Uwe Baron
  • Patent number: 8402829
    Abstract: A device for determining the internal structure of a bone along a path directed into the bone (or other tissue) is disclosed. The device comprises a nozzle fluidically connected to a liquid reservoir for providing a liquid jet directed at the bone in the direction of the path; an ultrasonic transducer for generating ultrasonic waves through the liquid jet and for detecting echoes of the ultrasonic waves caused by changes in the acoustical impedance in the bone characterizing changes in the structure of the bone along the path; and an analyzer for interpreting the echoes into meaningful information relating to the location of the structural changes along the path.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 26, 2013
    Assignee: Jet-Guide Ltd.
    Inventors: Jacob Halevy-Politch, Andre Craft
  • Publication number: 20130055816
    Abstract: The invention relates to a method for providing a structural condition of a structure, comprising providing an excitation wave generator; providing an excitation wave sensor; injecting an excitation burst wave into the structure using the excitation wave generator; obtaining a measured propagated excitation burst wave using the excitation wave sensor; correlating the measured propagated excitation burst wave with one of a plurality of theoretical dispersed versions of the excitation burst wave; and providing an indication of the structural condition of the structure corresponding to the correlated measured propagated excitation burst wave. The method may offer a better localization of the reflection points and thus of the potential defects present in a structure under inspection, when compared with a group velocity-based or time-of-flight (ToF) approach. The method may be particularly useful for structural health monitoring (SHM) and Non-Destructive Testing (NDT).
    Type: Application
    Filed: March 4, 2011
    Publication date: March 7, 2013
    Inventors: Patrice Masson, Philippe Micheau, Nicolas Quaegebeur, Dominique Langlois Demers
  • Publication number: 20120291552
    Abstract: (A) first data for defect amount estimation for the guided wave of a first frequency is obtained, the data indicating a relationship among amplitude of the reflected wave, a defect cross-sectional area and a defect width. (B) second data for defect amount estimation for the guided wave of a second frequency is obtained, the data indicating a relationship among amplitude of the reflected wave, a defect cross-sectional area and a defect width. (C) a guided wave of the first frequency is generated, and amplitude of a reflected wave is detected as first amplitude. (D) a guided wave of the second frequency is generated, and amplitude of a reflected wave is detected as second amplitude. (E) on a basis of the first and second data and the first and second amplitude, a defect cross-sectional area and a defect width of the defect part are estimated.
    Type: Application
    Filed: February 12, 2010
    Publication date: November 22, 2012
    Applicant: IHI INSPECTION AND INSTRUMENTATION CO., LTD.
    Inventors: Koki Daikoku, Masato Yoshizaki, Shuichi Sato
  • Publication number: 20120285247
    Abstract: A testing method using a guided wave generates a guided wave to propagate through a subject as a testing target in a longitudinal direction of the subject, detects a reflected wave of the guided wave and examines the subject on the basis of the reflected wave. The testing method includes the steps of (A) obtaining data for defect amount estimation beforehand indicating a relationship between a defect amount of the subject and a magnitude of a reflected wave, (B) generating a guided wave so as to propagate through the subject, and detecting a reflected wave of the guided wave, and (C) estimating a defect amount of the subject on the basis of the data for defect amount estimation obtained at (A) and the magnitude of the guided wave detected at (B).
    Type: Application
    Filed: February 12, 2010
    Publication date: November 15, 2012
    Applicant: IHI INSPECTION AND INSTRUMENTATION CO., LTD.
    Inventors: Koki Daikoku, Masato Yoshizaki, Shuichi Sato
  • Patent number: 8286487
    Abstract: An ultrasonic aperture scanning system includes a transducer insert having an insert plug, an ultrasonic transducer carried by the transducer insert and an indicator unit having at least one indicator interfacing with the ultrasonic transducer.
    Type: Grant
    Filed: January 31, 2009
    Date of Patent: October 16, 2012
    Assignee: The Boeing Company
    Inventors: Jeffrey R. Kollgaard, Barry A. Fetzer, Kevin M. Uhl
  • Publication number: 20120255359
    Abstract: A method and apparatus for detecting an inconsistency in an object. A signal sent from a first transducer unit is received at a second transducer unit. The signal is sent along a path through an object from the first transducer unit to the second transducer unit. The second transducer unit has segments. A velocity is identified at each segment in the segments for a number of modes for the signal to form identified velocities. A determination is made as to whether the inconsistency is present along the path through the object using the identified velocities for the number of modes for the signal.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 11, 2012
    Applicant: THE BOEING COMPANY
    Inventors: Hoon Sohn, Chul Min Yeum, Jeong-Beom Ihn
  • Patent number: 8266964
    Abstract: An ultrasonic flaw detection is performed to a welded portion 2 of a pipe body 1, a defect detection threshold value is determined based on the signal intensity difference between the total area of the defects existing in the region of an ultrasonic beam on a welded surface and an artificial defect, and a quality control of the pipe body is performed based on the defect detection threshold value. An equivalent defect diameter is determined from the defect density on the welded surface of the welded portion of the pipe body in a pipe axis direction and the area of the ultrasonic beam on the welded surface based on the total area of the defects existing in the region of the ultrasonic beam, and the defect detection threshold value is determined based on the equivalent defect diameter and the signal intensity difference of the artificial defect.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: September 18, 2012
    Assignee: JFE Steel Corporation
    Inventors: Yukinori Iizuka, Kazuhito Kenmochi, Hiroyasu Yokoyama, Tomohiro Inoue, Shigeto Sakashita
  • Patent number: 8266965
    Abstract: A method and a device for the contactless detection of laminated, flat objects, particularly sheet-like recording media. There is a galvanic separation and mechanical decoupling between the transmitter and receiver to improve detection. These measures can be further improved with correction characteristic methods.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: September 18, 2012
    Assignee: Pepperl + Fuchs GmbH
    Inventor: Dierk Schoen
  • Patent number: 8250923
    Abstract: An ultrasonic inspection method and ultrasonic inspection apparatus is capable of inspecting a weld line and of detecting a circumferential crack and an axial crack that are present in the weld line. An ultrasonic probe is placed on the surface of a structure and transmits an ultrasonic wave. The ultrasonic wave is transmitted at an angle in an X?-Z plane. The direction of a normal to the surface is defined as an X axis. The direction in which the weld line extends is defined as a Y axis. The direction perpendicular to the X axis and the Y axis is defined as a Z axis. An axis obtained by rotating the X axis around the Z axis is defined as an X? axis. A control mechanism performs signal processing of signals reflected from the defect or defects to detect the defect or defects and to measure the length of the defect or defects.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: August 28, 2012
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Kazuya Ehara, Naoyuki Kono, Masahiro Miki, Yoshio Nonaka
  • Patent number: 8210042
    Abstract: A spiral wound module assembly comprising: a permeate collection tube, at least one membrane envelope wound about the permeate collection tube, an outer module housing, and at least one acoustic transducer located adjacent to the permeate collection tube. Several embodiments are disclosed including a stand-alone probe adapted for insertion into the permeate collection tube. In several other embodiments, one or more transducers are secured to the inner surface of the permeate collection tube.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: July 3, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: William E. Mickols, Michael S. Koreltz, David J. Moll, Donald B. Streeter
  • Patent number: 8181528
    Abstract: A method and system for ultrasonically inspecting a ring gear of a gearbox is provided. The method and system can be used for the detection, characterization and/or sizing of defects in the ring gear. The ring gear has a plurality of teeth, which extend radially inward with respect to an outer surface of the gearbox. The method includes the steps of selecting an ultrasonic transducer productive of a test signal, positioning the ultrasonic transducer at an outer surface of the ring gear, orienting the ultrasonic transducer so as to direct the test signal to propagate through the ring gear, and activating the ultrasonic transducer so as to test the ring gear for defects therein.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 22, 2012
    Assignee: General Electric Company
    Inventors: Francis A. Reed, John T. Murphy, George R. Silliman
  • Patent number: 8185327
    Abstract: In a particular system for monitoring of a composite workpiece, at least one ultrasonic testing transducer is mounted to a surface of the composite workpiece and configured to transmit and receive ultrasonic energy to and from the composite workpiece during mechanical loading of the composite workpiece. An ultrasonic pulser/receiver is operatively coupled to the at least one ultrasonic testing transducer. A computing system is operatively coupled to the ultrasonic pulser/receiver. The computing system includes a data acquisition component configured to acquire data from the ultrasonic puller/receiver and a data analysis component configured to analyze the acquired data. The data analysis component may be further configured to analyze the acquired data for initiation of failure of the composite workpiece and/or growth of failure of the composite workpiece. Further, failure of the composite workpiece may include cracking and/or delaminating and/or disbonding.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 22, 2012
    Assignee: The Boeing Company
    Inventors: Michael D. Fogarty, Gary E. Georgeson
  • Patent number: 8181523
    Abstract: Ultrasound inspection methods for noisy materials and related probes are disclosed to inspect a defect in a cast material that use polycarbonate delay layers having a first surface configured to be disposed on a surface of the cast material; and an acoustic crystal element disposed on a second surface of the polycarbonate delay layer.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: May 22, 2012
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Thomas James Batzinger, Riccardo Barigazzi, Fabrizio Betti, Waseem Ibrahim Faidi, Eugenio Giorni, Dane E. Hackenberger, Federico Iozzelli, Manoj Kumar Km, Zongqi Sun, Toby L. Sweigart
  • Patent number: 8176786
    Abstract: Methods, apparatuses, and systems for damage detection and for other detection of the state of a structure or material. Such damage detection and detection of the state of a structure may be performed and operated without the use of baseline data. The present invention may operate using time reversal acoustics or polarization characteristics of piezoelectric devices. The present invention may include a piezoelectric device including two or more piezoelectric transducers.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: May 15, 2012
    Assignee: Carnegie Mellon University
    Inventors: Hoon Sohn, Seungbum Kim
  • Publication number: 20120085173
    Abstract: A non-intrusive sensor for in-situ measurement of recession rate of heat shield ablatives. An ultrasonic wave source is carried in the housing. A microphone is also carried in the housing, for collecting the reflected ultrasonic waves from an interface surface of the ablative material. A time phasing control circuit is also included for time-phasing the ultrasonic wave source so that the waves reflected from the interface surface of the ablative material focus on the microphone, to maximize the acoustic pressure detected by the microphone and to mitigate acoustic velocity variation effects through the material through a de-coupling process that involves a software algorithm. A software circuit for computing the location off of which the ultrasonic waves scattered to focus back at the microphone is also included, so that the recession rate of the heat shield ablative may be monitored in real-time through the scan-focus approach.
    Type: Application
    Filed: September 1, 2011
    Publication date: April 12, 2012
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: George Papadopoulos, Nicholas Tiliakos, Gabriel Benel, Clint Thomson
  • Patent number: 8109147
    Abstract: A method for an imaging ultrasonic inspection of a three-dimensional workpiece, in which ultrasonic waves are coupled into the workpiece with at least one ultrasonic transducer and ultrasonic waves reflected within the workpiece are received by ultrasonic transducers and converted into ultrasonic signals forming the basis of the non-destructive imaging ultrasonic inspection.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: February 7, 2012
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Michael Kröning, Andrey Bulavinov, Krishna Mohan Reddy, Ludwig Von Bernus
  • Patent number: 8104347
    Abstract: A method and system for ultrasonic time of flight diffraction inspection of a plastics wall, such as a pipe wall. The method includes providing an ultrasound transmitter and transmitting an ultrasound signal having a nominal frequency into the wall, providing an ultrasound receiver and receiving the ultrasound signal transmitted through the wall. The ultrasound signal provided by the transmitter has a bandwidth of more than 80%, preferably more than 100% of the nominal frequency of the ultrasound signal provided by the transmitter.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: January 31, 2012
    Assignee: Röntgen Technische Dienst B.V.
    Inventor: Peter Christian Den Boer
  • Patent number: 8100014
    Abstract: A plurality of ultrasonic flaw detection methods can be switched and executed by a simple operation. An ultrasonic flaw detection apparatus includes a switching circuit 3 for permitting an angle probe 1 and a normal probe 2 to be arbitrarily switched to a transmission unit T and a reception unit R of a flaw detector. The switching circuit 3 can select an angle flaw detection mode for transmitting and receiving an ultrasonic beam only by the angle probe, an SPOD mode for transmitting the ultrasonic beam by the angle probe and receiving a diffracted wave by the normal probe and a flaw detection mode executed by a combination of angle flaw detection mode.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: January 24, 2012
    Assignee: Central Research Institute of Electric Power Industry
    Inventors: Hiroyuki Fukutomi, Shan Lin
  • Patent number: 8091424
    Abstract: A defect detection method of a turbine generator end ring includes a first ultrasonic testing step of conducting ultrasonic testing by an angle beam technique to the turbine generator end ring, a second ultrasonic testing step of conducting, when an indication echo is detected by the first ultrasonic testing step, ultrasonic testing by a focusing straight beam technique to a portion of the turbine generator end ring from which an indication echo is detected and an interpretation step of interpreting whether the indication echo is a defect echo or a false echo based on a testing result by the second ultrasonic testing step.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: January 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hiroaki Koinuma
  • Patent number: 8091425
    Abstract: An ultrasonic testing method relates to a threaded joint of pipes including a pin having an external thread part, a metal seal part, and a shoulder part on an outer peripheral surface, and a box having an internal thread part, a metal seal part, and a shoulder part with the box and pin being fastened together using a lubricant. The method includes transmitting and receiving ultrasonic waves to and from a plurality of locations along an axial direction of the threaded joint in at least one of the internal thread part, the metal seal part, and the shoulder part of the box; detecting echo intensities and reception times of echoes for the plurality of locations; and detecting an abnormal portion in the threaded joint based on a longitudinal axial directional distribution of the echo intensities and longitudinal axial directional distribution of reception times of the echoes.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: January 10, 2012
    Assignees: Sumitomo Metal Industries, Ltd., Vallourec Mannesmann Oil & Gas France
    Inventors: Ikuji Hoshino, Masaki Yamano, Shigeo Nagasaku
  • Patent number: 8082792
    Abstract: A sensor system for determining the position of at least two edges of at least one web material traveling along a predetermined path. In one embodiment, the sensor system has at least one transmitter block having a plurality of transmitters capable of selectively transmitting ultrasonic signals and at least one receiver block having a plurality of receivers capable of generating receiver output signals in response to the receivers receiving at least a portion of the ultrasonic signals transmitted by the at least one transmitter block. The receiver block is spaced a distance from the transmitter block so as to define a continuous sensor field of view therebetween whereby at least a portion of the at least one web material traveling along a predetermined travel path interferes with at least a portion of the ultrasonic signals transmitted by the at least one transmitter block.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: December 27, 2011
    Inventors: Md M. Haque, Jim Yates, Wolfram Ploetz, Darcy J. Winter, Dale Hueppelsheuser
  • Patent number: 8074518
    Abstract: Systems (50) and methods for measuring and displaying a visual and/or graphical representation of the specific modulus (E/?) of a cellular ceramic body (10), such as those used to form particulate filters, are disclosed. The ultrasonic measurement system employs an ultrasonic transmitter (52T) and an ultrasonic receiver (52R) adjacent to, but spaced apart from respective ends (16, 18) of the ceramic body. Multiple ultrasonic waves (80) are sent through corresponding multiple longitudinal portions (12P) of the honeycomb structure (12), where adjacent longitudinal portions overlap. Time of flight (TOF) measurements (TOF1, TOF2), along with other parameters describing the ceramic body, allow for the measurement of the sonic speed (cmat) of the ultrasonic waves that pass through the ceramic body as well as the attenuation (IR). The specific modulus is then calculated from the square of the sonic speed (C2mat).
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: December 13, 2011
    Assignee: Corning Incorporated
    Inventors: John David Helfinstine, Robert A McIntosh, Lisa M Noni, Zhiqiang Shi, Sujanto Widjaja, David John Worthey
  • Patent number: 8074520
    Abstract: A transmission probe and a reception probe for transmitting and receiving a wideband ultrasonic wave are provided. Each time when the locations of the probes and are moved, a received wave Gj(t) is obtained. Based on a spectrum Fj(f) corresponding to the received wave Gj(t), a narrowband spectrum FAj(f) is extracted. A component wave GAj(t) corresponding to the narrowband spectrum FAj(f) is found by inverse Fourier transformation. A longitudinal wave primary resonance frequency f1 having a relationship with a thickness W (mm) of an inspection target and a primary resonance frequency fS1 of a transverse wave generated by mode conversion are calculated. A comparative display of the component waves GAj(t) is presented using f1, fS1 and sizing coefficients ns1, ns2, ns3 and ns4 for high precision inspection.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: December 13, 2011
    Assignees: H & B System Co., Ltd., The Kansai Electric Power Co., Inc., Kozo Keikaku Engineering Inc.
    Inventors: Masayuki Hirose, Masashi Kameyama, Yukihisa Hasegawa, Nobuki Dohi, Hong Zhang, Mitsuo Okumura
  • Patent number: 8074519
    Abstract: A method for monitoring a system, in which a plurality of acoustic images are recorded and compared at defined intervals of time over a period of time extending several weeks. A large system can be monitored reliably and with little complexity if the acoustic images each contain a plurality of acoustic image areas which are arranged in a spatially different manner, and, between respective recordings of the image areas of an acoustic image, an acoustic sensor is aligned with an image area, which is to be recorded, of a next image area by being moved.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: December 13, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: Frank Gerstenberg, Georg Kinnemann
  • Patent number: 8051717
    Abstract: The measurement of a flaw height in a thick welded portion of a stainless steel specimen, which is difficult to perform by the TOFD method, can be conducted with more ease, with higher accuracy and in a shorter time than in the case of using tip echo techniques. In addition, it is possible to reduce variations in measurement results among individual inspectors. An ultrasonic wave 21 is launched by a transmitting probe 1 into a specimen 20 in a direction oblique to a flaw 24 to generate diffracted waves at the tip 25 of the flaw 24, then a diffracted wave 22 propagating upward directly from the flaw 24 and a diffracted wave 23 propagating upwardly of the flaw 24 after once reflected off the back 27 are received by a receiving probe 2 disposed above the flaw 24, and the height of the tip of the flaw 24 from the back 27 is measured from the propagation time difference between the received diffracted waves.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: November 8, 2011
    Assignee: Central Research Institute of Electric Power Industry
    Inventors: Hiroyuki Fukutomi, Shan Lin, Takashi Ogata
  • Publication number: 20110247417
    Abstract: The invention relates to a nondestructive ultrasonic test method in which at least one ultrasonic pulse is emitted into a workpiece under test by means of at least one ultrasonic transmitter (3), the ultrasonic pulse is reflected on boundary surfaces within the workpiece, the reflected ultrasound is received by at least one ultrasonic receiver (2), and the associated signals are evaluated, the ultrasound penetrating a damping block (4) that is arranged between the workpiece and the transmitter or receiver.
    Type: Application
    Filed: September 7, 2009
    Publication date: October 13, 2011
    Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH
    Inventors: York Oberdoerfer, Michael Berke, Wolf-Dietrich Kleinert, Jerome Poirier, Sascha Schieke
  • Patent number: 8015876
    Abstract: The structural integrity of a safe-life aircraft component on an aircraft is measured and assessed by a processing unit. The component includes a load-bearing metal element that is free from cracks. In the method, acoustic emissions generated in the metal element are converted into electronic signals. The acoustic emissions converted include relevant acoustic emissions resulting from changes in the structure of the element that make the element more susceptible to the formation of cracks. The electronic signals are set to a processing unit. The processing unit processes over time the signals in conjunction with stored reference data that allows a measure of the structural integrity to be made. Information providing a measure of the structural integrity of the aircraft component is outputted. Thus, deterioration of the structure of the component can be detected and monitored before a crack occurs.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: September 13, 2011
    Assignee: Airbus Operations Limited
    Inventors: Murad El-Bakry, Kathryn Jane Atherton, Christophe Armand Nicolas Paget
  • Patent number: 8015877
    Abstract: A method for generating an image of an anomaly may include generating a pulse wave into a structure being evaluated from each of a plurality of sensors and collecting any scattered wave data caused by the pulse wave impacting an anomaly. The scattered wave data may be collected by the same sensor that generated the pulse wave or by a different sensor. The method may also include identifying any backscattered wave data from a distal edge or border of any anomaly relative to a location of the sensor collecting the scattered wave data. The method may additionally include processing the backscattered wave data from each of the sensors collecting the scattered wave data to generate a two dimensional image of any anomaly. The method may further include presenting the two dimensional image of any anomaly.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: September 13, 2011
    Assignee: The Boeing Company
    Inventor: Jeong-Beom Ihn
  • Patent number: 7975548
    Abstract: An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 12, 2011
    Assignee: Det Norske Veritas AS
    Inventors: Åge A. Olsen, Jostein Jacobsen, Tore Magne Halås Skar, Petter Norli, Ashild Bergh, Nils-Otto Negård, Steinar Låg
  • Publication number: 20110154903
    Abstract: The structural health monitoring method of the present invention utilizes ultrasound to determine information about deformation, stress and/or damage in structural elements. The method propagates ultrasound through at least a portion of a material having fully-reversible nonlinear elasticity, receives the ultrasound which has been propagated through at least a portion of the material and determining information about the structural element from attenuation and/or time of flight of said received ultrasound.
    Type: Application
    Filed: February 22, 2011
    Publication date: June 30, 2011
    Applicant: DREXEL UNIVERSITY
    Inventors: PETER FINKEL, MICHEL W. BARSOUM, SANDIP BASU, AIGUO ZHOU
  • Patent number: 7950283
    Abstract: A method of predicting workpiece deformation prior to machining that causes the workpiece to deform through release of residual stresses. The method includes emitting a beam of ultrasound waves onto the workpiece surface in such a way that a longitudinal wave is propagated in a given direction under and substantially parallel to the surface, positioning at least one transducer in receive mode on the surface to receive a subsurface longitudinal wave that has been propagated, and measuring the propagation velocity of the subsurface longitudinal wave. The method further includes performing these steps in two workpiece regions, a first region sensitive to residual stresses and a second region somewhat insensitive to residual stresses, then calculating a difference in propagation velocity between the velocity measured in the first region and the velocity measured in the second region and from the difference, deducing the deformation that will result from machining the first region.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: May 31, 2011
    Assignee: SNECMA
    Inventors: Jean-yves Francois Roger Chatellier, Eric Charles Louis Le Letty
  • Patent number: 7942057
    Abstract: A method for monitoring the structural state of a fiber web (1) that is being processed by a fiber web processing machine comprising a fiber web processing station (2) is described. The method comprises the steps of arranging a generator (5) and a detector (6) of a generator-detector unit (4) on opposite sides of the traveling fiber web (1) downstream of the fiber web processing station; bringing the generator to emit an ultrasonic wave; bringing the detector to receive the ultrasonic wave; sending a signal representing the received ultrasonic wave to a control unit (10); and, in the control unit, analyzing the signal and extracting a value from the signal representing a measure of the received ultrasonic wave. A system for monitoring the structural state of a fiber web is also described.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 17, 2011
    Assignee: Stora Enso AB
    Inventors: Thorulf Pettersson, Jan Lif, Magnus Björklund, Susanne Lindh
  • Patent number: 7926350
    Abstract: A method for the non-destructive inspection of a test body using ultrasound is disclosed, in which at least one ultrasonic transducer couples ultrasonic waves into the test body and ultrasonic waves reflected inside the test body are received by ultrasonic transducers and converted into ultrasonic signals, which form the basis of the non-destructive inspection.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: April 19, 2011
    Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
    Inventors: Michael Kröning, Andrey Bulavinov, Krishna Mohan Reddy, Ludwig Von Bernus
  • Publication number: 20110072903
    Abstract: The present disclosure includes a portable device for assessing warp stability of a wood element having two or more planar surfaces. In some embodiments, the portable device includes a sensor housing positioned adjacent to the wood element, a first sensor group configured to sense one or more first measurements on a first planar surface, and a second sensor group configured to sense one or more second measurements on a second planar surface. The first measurements and the second measurements are inputted into an algorithm for assessing warp stability of the wood element. In some embodiments the model is based at least partially on measurement of compression wave velocity. In some embodiments, the model is based on the tracheid effect.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: Weyerhaeuser NR Company
    Inventor: Stanley L. Floyd
  • Patent number: 7900516
    Abstract: To simply and accurately determine the position of an edge, the depth or the height of a flaw including a surface crack, a corroded portion near the surface layer of a thick specimen, and a minute damage.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: March 8, 2011
    Assignee: Central Research Institute of Electric Power Industry
    Inventors: Hiroyuki Fukutomi, Shan Lin, Tetsuo Fukuchi
  • Patent number: 7900517
    Abstract: A system for inspecting a pipeline with ultrasound, provided with a transport device arranged to move in a transport direction through the pipeline, a plurality of transducers and a transmitting and receiving device connected with the transducers. The transducers and the transmitting and receiving device are mounted on the transport device. The transducers are provided with a first set of transducers, a second set of transducers and a third set of transducers. The system is arranged to move the first set of transducers, the second set of transducers and the third set of transducers in a tangential direction with respect to the transport direction along an interior wall of the pipeline. The system is arranged to bring the transducers of the first set, the second set and the third set into contact with the interior wall of the pipeline during the performance of a measurement.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: March 8, 2011
    Assignee: Rontgen Technische Dienst B.V.
    Inventors: Khalid Chougrani, Frederik Hendrik Dijkstra, Cesar Justino Buque, Robert van Agthoven
  • Patent number: 7856883
    Abstract: A capacitive ultrasonic device is capable of detecting an object and providing information regarding an orientation of the object. The capacitive ultrasonic device includes a power source configured to generate a voltage signal, an array of sensor elements, each of the sensor elements being configured to generate an ultrasonic wave during a first period of the voltage signal and detect whether a wave is reflected from the object during a second period of the voltage signal when the voltage signal is applied thereto, and a control unit configured to activate a first portion of the array of sensor elements through the power source, and activate a second portion of the array of sensor elements when at least one of the first portion of the sensor elements detects a wave reflected from the object.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: December 28, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Wei Chang, Hsu-Cheng Deng, Tsung-Ju Gwo
  • Patent number: 7849747
    Abstract: Ultrasonic detection of flaws in ceramic monoliths such as are commonly used in diesel particulate filters is made possible by beaming ultrasound into the monolith from an inlet or outlet face thereof and analyzing the reflected ultrasound from the same face. The monolith is preferably rotated during the scan, or the scan may be repeated from several rotational positions relative to the face of the monolith. Even small flaws which are hard to detect may be identified.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: December 14, 2010
    Assignee: Umicore AG & Co. KG
    Inventor: Christopher Simon Owens
  • Patent number: 7823451
    Abstract: Ultrasonic testing on a part includes scanning the part while performing pulse echo and through transmission ultrasonic testing on the part; converting pulse echo data into time of flight (TOF) and amplitude channels, and converting through transmission data into a data representation that identifies porosity. The testing further includes analyzing the pulse echo TOF to identify locations of any anomalies in the part, and using loss of back (LOB) at each of the identified locations to discriminate low porosity from other anomalies.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: November 2, 2010
    Assignee: The Boeing Company
    Inventor: Dennis P. Sarr
  • Patent number: 7822580
    Abstract: A system and method for monitoring a condition and an operation of a periodically moving object is provided. Herein a synchronized time average is calculated for a measurement signal, the signal containing periodical variations and obtained from the object response. In general, a frequency response is determined based on the periodical variations of the measurement signal. A signal component representing the determined frequency response is filtered from the measurement signal. The filtered signal is used as a synchronizing signal. A synchronized time average of sequences, determined by dividing the measurement signal by the synchronizing signal, is calculated.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: October 26, 2010
    Assignee: Metso Automation OY
    Inventor: Harri Mustonen
  • Publication number: 20100244591
    Abstract: Magnetostrictive transducers for monitoring wall thinning in a pipe, and an apparatus and method for monitoring wall thinning in a pipe using magnetostrictive transducers are provided. The magnetostrictive transducers generate broadband multimode shear horizontal (SH) waves, and allow the generated SH waves to travel along the pipe, thus correctly monitoring a status of the wall thinning of the pipe. The apparatus includes a transmitting transducer which is installed outside of a pipe and generates shear horizontal (SH) waves traveling along the pipe, a receiving transducer which is spaced apart from the transmitting transducer and measures the shear horizontal (SH) waves traveling along the pipe, and a controller for monitoring wall thinning of the pipe by exciting and measuring output signals of the transmitting and receiving transducers.
    Type: Application
    Filed: August 6, 2009
    Publication date: September 30, 2010
    Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE
    Inventors: Seung Hyun Cho, Hyu Sang Kwon, Bong Young Ahn, Seung Seok Lee
  • Publication number: 20100250151
    Abstract: The invention disclosed herein provides a method and system for automatic wedge identification for an ultrasonic inspection system and includes the steps of coupling a given probe wedge to a phased array system. Ultrasonic pulses are applied from the phased array system to the given probe wedge and, thereafter, time of flight of the ultrasonic pulses through the given probe wedge are measured. By calculating at least one of several parameters such as a wedge angle, a height of a first probe element and a wedge acoustic velocity the given probe wedge may be identified.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Inventors: Kirk M. RAGER, Jason HABERMEHL, Fabrice CANCRE
  • Publication number: 20100218609
    Abstract: A method and system for ultrasonically inspecting a ring gear of a gearbox is provided. The method and system can be used for the detection, characterization and/or sizing of defects in the ring gear. The ring gear has a plurality of teeth, which extend radially inward with respect to an outer surface of the gearbox. The method includes the steps of selecting an ultrasonic transducer productive of a test signal, positioning the ultrasonic transducer at an outer surface of the ring gear, orienting the ultrasonic transducer so as to direct the test signal to propagate through the ring gear, and activating the ultrasonic transducer so as to test the ring gear for defects therein.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 2, 2010
    Inventors: Francis A. Reed, John T. Murphy, George R. Silliman
  • Patent number: 7784346
    Abstract: Disclosed are micromachined acoustic sensors for monitoring electrochemical deposition, methods for fabricating such sensors, and methods for in-situ monitoring of electrochemical deposition processes using such sensors. An exemplary acoustic sensor includes a deformable silicon membrane, an encapsulated piezoelectric layer formed on the silicon membrane, and surface electrodes formed on the piezoelectric layer. The sensor and a loudspeaker may be used to calibrate an electrochemical deposition process. The acoustic response of the sensor is monitored over time with respect to plating thickness during electroplating of a sample to generate a predictive model defining the plating process. The predictive model may be used to monitor the plating thickness of other samples in real time.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: August 31, 2010
    Assignee: Georgia Tech Research Corporation
    Inventors: Frances R. Williams, Gary S. May
  • Patent number: 7784724
    Abstract: A fishing reel that employs a non-contact line sensor to capture images of the backlash zone of a baitcast fishing reel, together with image analysis and feedback to a direct contact spool brake, with the result of gradual to near-instantaneously halting spool rotation, thereby decreasing or preventing backlash under all fishing conditions while maximizing cast distance.
    Type: Grant
    Filed: October 11, 2008
    Date of Patent: August 31, 2010
    Inventor: James P. Beckham
  • Patent number: 7762136
    Abstract: Disclosed are systems and methods that permit both real-time, and off-line, measurement of weld penetration depth. Exemplary systems and methods comprise an ultrasound source, such as a pulsed Nd:Yag laser, that simultaneously generates longitudinal and shear waves that radiate adjacent one side of a weld joining two specimens. An ultrasonic sensor, such as an electro-magnetic acoustic transducer or a piezo-electric transducer, capable of detecting shear and/or longitudinal waves, is disposed on an opposite side of the weld from the source. A signal processor is coupled to the sensor that processes time of flight signals for selected longitudinal or shear waves transmitted across the weld seam. The signal processor implements an algorithm that computes the weld penetration depth from the time of flight signals.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: July 27, 2010
    Assignee: Georgia Tech Research Corporation
    Inventors: Ifeanyi C. Ume, Akio Kita
  • Patent number: 7748273
    Abstract: A device for determining the internal structure of a bone along a path directed into the bone (or other tissue) is disclosed. The device comprises a nozzle fluidically connected to a liquid reservoir for providing a liquid jet directed at the bone in the direction of the path; an ultrasonic transducer for generating ultrasonic waves through the liquid jet and for detecting echoes of the ultrasonic waves caused by changes in the acoustical impedance in the bone characterizing changes in the structure of the bone along the path; and an analyzer for interpreting the echoes into meaningful information relating to the location of the structural changes along the path.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: July 6, 2010
    Assignee: JetGuide Ltd
    Inventors: Jacob Halevy-Politch, Andre Craft
  • Patent number: 7730784
    Abstract: Embodiments of techniques to verify the interference fit of fasteners are disclosed. In one embodiment, a method includes aligning a probe proximate a fastener, the fastener being disposed within a material. A dynamic stress signal is generated from the probe using a low frequency transducer, and the dynamic stress signal is interrogated after it passes between the fastener and the material. An interference fit is then determined based on the interrogated dynamic stress signal.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: June 8, 2010
    Assignee: The Boeing Company
    Inventors: Gary E. Georgeson, James H. Lee, Karl E. Nelson
  • Patent number: 7706985
    Abstract: In a non-limiting, exemplary system for in-situ monitoring of a composite workpiece, at least one ultrasonic testing transducer is mounted to a surface of a composite workpiece and configured to transmit and receive ultrasonic energy to and from the composite workpiece during mechanical loading of the composite workpiece. An ultrasonic pulser/receiver is operatively coupled to the at least one ultrasonic testing transducer. A computing system is operatively coupled to the ultrasonic pulser/receiver. The computing system includes a data acquisition component configured to acquire data from the ultrasonic pulser/receiver and a data analysis component configured to analyze the acquired data. The data analysis component may be further configured to analyze the acquired data for initiation of failure of the composite workpiece and/or growth of failure of the composite workpiece. Further, failure of the composite workpiece may include cracking and/or delaminating and/or disbonding.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: April 27, 2010
    Assignee: The Boeing Company
    Inventors: Michael D. Fogarty, Gary E. Georgeson