Including Structural Bond Evaluation Patents (Class 73/582)
  • Patent number: 10627369
    Abstract: A method, a computer program and a system for ultrasonic inspecting of objects is provided. The method comprises positioning (103) a measuring device (11) comprising a plurality of transducers (12) on the inspected object (20) and performing a number of test signal acquisitions (103). Each acquisition includes using one transducer to induce an ultrasonic signal into the test object, and using at least one other transducer to receive an ultrasonic test signal. The inspecting further comprises determining (105, 205) the influence of contact surface variations between each test signal and a reference signal; compensating (106, 206) the full test signal for the contact surface variations; and determining (109) a residual signal. The system comprises a computing device (30), and a measuring system (13) communicatively connected to the computing device (30). The measuring system (13) includes an ultrasound unit (19) and a measuring device (11) provided with a plurality of transducers (12).
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: April 21, 2020
    Assignee: Creo Dynamics AB
    Inventor: Christophe Mattei
  • Patent number: 10619992
    Abstract: Embodiments provide a device, a tire pressure measurement system, a tire, a method and a computer program to obtain information indicating a tread depth of the tire. The device to obtain information indicating a tread depth of a tire of a vehicle comprises a transducer to provide acoustical signals based on electrical signals and vice versa. The device further comprises a control unit, which is coupled to the transducer. The control unit is configured to provide the transducer with a first electrical signal based on which the transducer provides an acoustical transmit signal. The control unit is further configured to obtain a second electrical signal from the transducer. The second electrical signal is based on a reflected version of the acoustical transmit signal. The control unit is further configured to process the second electrical signal to obtain information indicating the tread depth of the tire.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: April 14, 2020
    Assignee: Infineon Technologies AG
    Inventor: Franz Michael Darrer
  • Patent number: 10436767
    Abstract: A device and method for determining characteristics of a concrete sample includes the use of multiple transducers. The transducers may couple to the concrete surface so that they can impart or receive mechanical waves from the sample. An area within a plane in the concrete sample is bounded by a collective extent of mechanical waves that pass through the plane and has a dimension at least as long as a distance between reinforcing bars in the concrete.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: October 8, 2019
    Assignee: NLA Diagnostics LLC
    Inventors: Aldo Bellotti, Ralph N. Strayhorn, IV
  • Patent number: 10247718
    Abstract: Embodiments include an apparatus for determining a pull-out capacity of a bolt disposed in concrete. The apparatus includes control processing circuitry and a Schmidt hammer electrically connected to the control processing circuitry. The Schmidt hammer is configured to strike the bolt during a test event and to record a rebound value for the bolt. The control processing circuitry is configured to calculate an estimated pull-out strength for the bolt using the rebound value of the bolt that resulted from the test event, a predetermined bolt diameter, a predetermined bolt embedment length in the concrete, and an estimated predetermined strength of concrete. The apparatus also includes a remote computer configured to communicate with the control processing circuitry and to store an estimated pull-out strength of the bolt. The control processing circuitry includes a memory and a database.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: April 2, 2019
    Assignee: University of Dammam
    Inventor: Muhammad Saleem
  • Patent number: 10215733
    Abstract: The purpose of the present invention is to provide a nondestructive inspection method and nondestructive inspection device for an anchor bolt capable of quantitatively inspecting the health of an anchor bolt fixed to a foundation by a metallic anchor. Provided is a nondestructive anchor-bolt inspection method for inspecting the health of an anchor bolt fixed to a foundation by a metallic anchor, wherein a striking sound is produced through the striking of a portion of the anchor bolt exposed from the surface of the foundation, frequency information is obtained through the reception and frequency analysis of the signal waveform of the striking sound, and the health of the anchor bolt is nondestructively and quantitatively inspected on the basis of the frequency information for the signal waveform. Also provided is a nondestructive inspection device for an anchor bolt.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: February 26, 2019
    Assignee: NUCLEAR FUEL INDUSTRIES, LIMITED
    Inventors: Junji Etoh, Takashi Matsunaga, Ryota Ogawa, Yoshihiro Isobe, Mitsuyuki Sagisaka
  • Patent number: 10126271
    Abstract: A device for testing a test material for defects within the test material has an acoustic broadband transducer offset from the test material surface during testing by a distance so that the transducer acquires acoustic waves across an air gap from the test material, wherein the acoustic waves arise from impact of an impact member on the test material.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: November 13, 2018
    Assignee: NLA Diagnostics LLC
    Inventors: Aldo Bellotti, Ralph N. Strayhorn, IV, Amadeo A. Bellotti
  • Patent number: 9805697
    Abstract: A vehicle service system having a means for acquiring images of a three-dimensional region of a vehicle wheel assembly tire tread surface. The vehicle service system is configured to process the acquired images to produce a collection of data points corresponding to the spatial position of surface points in the region from which tire tread wear characteristics are identified. The acquired images are further utilized to provide both a graphical and a numerical display to an operator, with the numerical display linked to specifically annotated or indexed points or windows within the graphical display, thereby enabling an operator to quickly identify specific focus points or regions on the tire surface which have been measured at the numerically identified tread depths.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 31, 2017
    Assignee: Hunter Engineering Company
    Inventors: Daniel R. Dorrance, Nicholas J. Colarelli, III, Timothy A. Strege
  • Patent number: 9309663
    Abstract: Embodiments of the invention provide systems and methods for insulating a component of a home or building. An insulated component may include a generally planar surface and a frame positioned atop one side of the generally planar surface. The frame may include a plurality of outer studs coupled together to form an outer periphery and inner studs that divide the frame into one or more sections. One or more of the sections may include a cavity or hollow space. The insulated component may also include a first layer of insulation within one or more of the cavities. The first layer of insulation may include a pour insulation material that transitions from a liquid state or phase to a solid state or phase.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: April 12, 2016
    Assignee: Johns Manville
    Inventor: Ralph Michael Fay
  • Patent number: 9225942
    Abstract: A method for displaying a captured image on a display device. A real image is captured by a vision-based imaging device. A virtual image is generated from the captured real image based on a mapping by a processor. The mapping utilizes a virtual camera model with a non-planar imaging surface. Projecting the virtual image formed on the non-planar image surface of the virtual camera model to the display device.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 29, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Wende Zhang, Jinsong Wang, Bakhtiar Brian Litkouhi, Kent S. Lybecker, Ryan M. Frakes
  • Patent number: 9194782
    Abstract: Disclosed herein is a vacuum insulation material, which includes a barrier film and a core, wherein a rigid body thinner than a reference thickness or a getter harder than a reference hardness is formed between the barrier film and the core, or the rigid body thinner than the reference thickness is formed on the getter formed between the barrier film and the core to ensure surface flatness and surface hardness of the vacuum insulation material.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: November 24, 2015
    Assignee: LG HAUSYS, LTD.
    Inventors: Seung-Min Jeon, Sung-Seock Hwang, Jung-Pil Han
  • Patent number: 9153554
    Abstract: A method of adjusting ultrasonic bonding energy on a wire bonding machine, the method comprising the steps of: providing a reference relationship between free air ball squash and ultrasonic bonding energy; determining an actual relationship between free air ball squash and ultrasonic bonding energy on a subject wire bonding machine; and adjusting at least one ultrasonic bonding energy setting of the subject wire bonding machine such that the actual relationship of the subject wire bonding machine is closer to the reference relationship.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: October 6, 2015
    Assignee: Kulicke and Soffa Industries, Inc.
    Inventor: Jon W. Brunner
  • Publication number: 20140318247
    Abstract: Provided is an apparatus for assessing interface integrity between a medium and an implant. A first signal is translated from a motion of an impact body during impact with an abutment connected to the implant. In some embodiments, the first signal is filtered using a zero phase shift filter and then used for assessing the interface integrity. Since no phase shift is introduced, the interface integrity is accurately assessed. In another embodiment, the apparatus maintains a system model for impacting the impact body against the abutment. The apparatus analytically determines an interface property by applying a system property that has been determined to the system model. An accurate system model allows for an accurate assessment. According to another broad aspect, there is provided a method of conducting the impact test. According to the method, a person ensures that the impact body impacts against a consistent portion of the abutment.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicant: COVENANT HEALTH
    Inventors: Gary FAULKNER, Donald Wayne RABOUD, Ryan Clair SWAIN, Johan Francis WOLFAARDT
  • Patent number: 8752432
    Abstract: A system incorporating sensor enhanced composite armor structure. The structure has one layer including ceramic tiles and ceramic-material transducers, wherein the ceramic tiles and the transducers fit closely together so that the one layer is ballistically windowless. The structure has other layers composed of armor material stacked with the one layer, the one layer and the other layers forming a plate which as a unit has a set or group of fundamental frequencies. The system includes logic means to analyze only signals resulting from vibrations transmitted from the one transducer to the other transducer through the one layer. The logic means thereby derives a signal fingerprint which characterizes a state of damage to the plate.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: June 17, 2014
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas J. Meitzler, Ivan Wong, Thomas P. Reynolds, Samuel E. Ebenstein
  • Patent number: 8714015
    Abstract: A joint quality examining device and method for accurately examining in real time the qualities of the joints of all the products where joining members are joined to members to be joined.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 6, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Nami Matsui, Youichirou Baba, Hironari Matsubara, Yoshinobu Tamura
  • Publication number: 20140102200
    Abstract: A method for non-destructively evaluating a joined component includes inducing vibrations in the joined component within a range of frequencies, acquiring a resonance spectra from the joined component resulting from the induced vibrations, and analyzing the resonance spectra using Acoustic Sensor Testing (AST).
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Surendra Singh, Frederick William Vensel
  • Patent number: 8656779
    Abstract: Methods and apparatus for exciting a structure and determining its structural integrity. In particular, methods of nonlinear analysis are used to compare first and second response datasets, each dataset resulting from a different excitation amplitude that the other dataset.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 25, 2014
    Assignee: Purdue Research Foundation
    Inventors: Douglas E. Adams, David Joseph Koester, Sara Underwood
  • Publication number: 20130269436
    Abstract: Various embodiments provide systems and methods for detecting defects in components of a fuel cell. Embodiment methods and systems include directing acoustic energy into the component, detecting acoustic energy from the component, analyzing a characteristic of the detected acoustic energy, and based on the analyzing, determining the presence or absence of a defect in the component.
    Type: Application
    Filed: April 10, 2013
    Publication date: October 17, 2013
    Applicant: Bloom Energy Corporation
    Inventors: Stephen Couse, Tulin Akin
  • Publication number: 20130213137
    Abstract: A method is disclosed for testing for delamination of a first composite component from a second composite component a composite material. The method comprises coupling a broad-band actuator to the composite material and connecting sweeping frequencies to the broad-band actuator for vibrating the composite material. An acoustic sensor is coupled to the composite material for measuring a resonant frequency curve of the vibrating composite material. The measured resonant frequency curve of the vibrating composite material is compared with a reference resonant frequency curve. A delaminated composite material produces a change in the measured resonant frequency curve relative to the reference resonant frequency curve. The method is suitable for detecting delamination in fuel cells as well as ceramic body armor.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 22, 2013
    Inventor: Sergei Ostapenko
  • Publication number: 20130139596
    Abstract: A sensing system which comprises a material (30) formed of a matrix and a plurality of non-insulating particles (40) substantially equally spaced within the matrix such that the material has coherent electrical periodicity in at least one dimension; and a receiver (10), the receiver arranged to receive a source RF signal and a returned RF signal, the source RF signal being reflected by the non-insulating particles to produce the returned RF signal. A change in the position of one or more of the non-insulating particles causes the returned RF signal to change, such that a change in a property of the material can be determined from the returned RF signal.
    Type: Application
    Filed: May 16, 2011
    Publication date: June 6, 2013
    Applicant: PARAMATA LTD.
    Inventors: Christopher Robin Lowe, Karishma Jain, Adrian Carl Stevenson
  • Patent number: 8448516
    Abstract: Provided is an apparatus for assessing interface integrity between a medium and an implant. A first signal is translated from a motion of an impact body during impact with an abutment connected to the implant. In some embodiments, the first signal is filtered using a zero phase shift filter and then used for assessing the interface integrity. Since no phase shift is introduced, the interface integrity is accurately assessed. In another embodiment, the apparatus maintains a system model for impacting the impact body against the abutment. The apparatus analytically determines an interface property by applying a system property that has been determined to the system model. An accurate system model allows for an accurate assessment. According to another broad aspect, there is provided a method of conducting the impact test. According to the method, a person ensures that the impact body impacts against a consistent portion of the abutment.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: May 28, 2013
    Assignee: Covenant Health
    Inventors: Gary Faulkner, Donald Wayne Raboud, Ryan Clair Swain, Johan Francis Wolfaardt
  • Patent number: 8181527
    Abstract: An apparatus for pass/fail determination of bonding used in a bonding apparatus, includes: an ultrasonic horn configured to vibrate longitudinally in resonance with the vibration of an ultrasonic vibrator; a capillary attached at an anti-node of the vibration of the ultrasonic horn; a flange provided at a node of the vibration of the ultrasonic horn; a bonding arm; and a load sensor attached between the center of rotation of the bonding arm and a flange mounting surface in an offset manner from a longitudinal central axis of the ultrasonic horn, in which a load on the capillary in the direction toward and away from the bonding target is continuously detected by using the load sensor during bonding operation and the maximum value of the detected load is defined as an impact load to determine pass/fail of the bonding based on the impact load, thereby allowing a mid-bonding pass/fail determination.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: May 22, 2012
    Assignee: Shinkawa Ltd.
    Inventors: Nobuyuki Aoyagi, Kohei Seyama
  • 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
  • Publication number: 20120036933
    Abstract: A method is provided for the non-destructive and contactless characterization of a multilayered structure having a substantially spherical shape and including at least two layers, separated by interfaces. The method includes using a laser for locally heating the structure in a thermoelastic state so that the structure is vibrated in a non-destructive manner, measuring the resonance frequencies of the vibration modes of the structure and deriving at least one characteristic concerning the integrity or the shape or the mechanical behavior of the structure from the resonance frequencies of the structure.
    Type: Application
    Filed: December 23, 2009
    Publication date: February 16, 2012
    Applicants: UNIVERSITE DU MAINE, AREVA NP
    Inventors: Julien Banchet, Ahmed Amziane, Denis Mounier, Jean-Marc Breteau
  • Publication number: 20110314915
    Abstract: Methods and apparatus for exciting a structure and determining its structural integrity. In particular, methods of nonlinear analysis are used to compare first and second response datasets, each dataset resulting from a different excitation amplitude that the other dataset.
    Type: Application
    Filed: March 5, 2010
    Publication date: December 29, 2011
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Douglas E. Adams, David Joseph Koester, Sara Underwood
  • Patent number: 7991587
    Abstract: A computer implemented method, apparatus, and computer usable program code for testing a material. A signal is sent into the material using the transmitter. The signal has a frequency range that falls within a selected frequency range to form a transmitted signal. An actual response to the transmitted signal is received at a sensor. A simulated response of the material to the transmitted signal is generated using a functional model capable of modeling responses of the material to different frequency ranges falling within the selected frequency range. The simulated response is compared to the actual response to determine if a change has occurred in the material.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: August 2, 2011
    Assignee: The Boeing Company
    Inventor: Jeong-Beom Ihn
  • 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
  • Patent number: 7681450
    Abstract: A method useful for evaluating the presence and/or the quality of the cement bond of a downhole tubular. The method involves measuring radial resonance modes of the tubular, and comparing those measured values to the unbound tubular resonant values of a calibration ring. For a well bonded tubular, the measured radial resonance should be greater than that of the unbound tubular calibration ring. In regions where a fluid, such as water surrounds the outside of the tubular, or the cement is otherwise not bonded to the outer surface of the tubular, the measured response should be less than the calibrated response. The calibration ring should have the same diameter, wall thickness, and be made of the same material as the tubular.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: March 23, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Alexei Bolshakov, Vladimir Dubinsky, Xiao Ming Tang, Douglas J. Patterson, Dimitri Donskoy, Joseph Gregory Barolak
  • Patent number: 7647828
    Abstract: The invention relates to a method for measuring and/or regulating the oscillation amplitude of an ultrasound oscillator of an ultrasound device. In order to be able to measure or regulate the oscillation amplitude of the ultrasound oscillator in a simple manner, it is proposed that a sensor capturing the oscillation amplitude be associated with at least one component element of the ultrasound oscillator.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: January 19, 2010
    Assignee: Schunk Ultraschalltechnik GmbH
    Inventor: Frank Gassert
  • Patent number: 7574915
    Abstract: An NDI system includes an ultrasonic transducer and an electronic device having an indicator, such as a light source. The electronic device energizes the transducer, receives sinusoidal signals from the transducer, determines impedance-plane coordinates corresponding to quadrature-phase separated components of the sinusoidal signals, and automatically activates the indicator if impedance-plane coordinates exceed a preset threshold. The system may be used in methods of inspecting layered structures such as composite aircraft components and repair patches applied to such structures.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: August 18, 2009
    Assignee: The Boeing Company
    Inventors: Jeffrey R. Kollgaard, Nancy L. Wood
  • Patent number: 7549336
    Abstract: A method and apparatus for determining the performance level, amount of wear, and remaining useful life of a new or worn object, preferably of metallic construction through harmonic fatigue evaluation. The object to be tested is struck with a resonant frequency generating device, causing the object to transmit its vibrational resonance to at least one signal receiving transducer. The transducer then relays the frequency back to a database wherein it is compared to known frequency responses of that specific object through a linear continuum from prior controlled testing, to determine the remaining performance level in comparison to a new object of the same construction.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: June 23, 2009
    Inventor: Francis Masyada
  • Patent number: 7424827
    Abstract: In an inspecting method of a piezoelectric/electrostrictive actuator having a piezoelectric/electrostrictive element and two or more electrodes, the frequency response characteristics is picked up when a vibration is given to the piezoelectric/electrostrictive actuator, and the amount of displacement of the piezoelectric/electrostrictive actuator is predicted by the frequency response characteristics. The piezoelectric/electrostrictive actuator is precisely inspected without dissolution and destruction and without actual driving as a product.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: September 16, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Tomohiro Yamada, Masato Komazawa, Tetsuya Hatta, Takatoshi Nehagi
  • Patent number: 7281434
    Abstract: A device for monitoring the service life of a machine-technical installation includes a sensor module and at least a measuring sensor for detecting stresses and expansions from a structural component of the machine-technical installation, a microcontroller, an antenna arrangement and a current source; the sensor module being in bi-directional connection with a data processing unit and having an antenna arrangement integrated therein, the antenna arrangement including a low-frequency antenna by means of which the sensor module is turned on and off and a high-frequency antenna for sending and receiving high frequency signals and wherein the sensor module can transition from an operating mode into a stand-by mode for energy efficiency and is reactivated through a signal from a detector element.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: October 16, 2007
    Assignee: Thiele GmbH & Co. KG
    Inventor: Karl Nienhaus
  • Patent number: 7043989
    Abstract: The invention concerns a method of testing the installation quality of a grouted anchor system comprising at least one tendon anchored by grout in a hole in a surrounding mass. The system typically includes a group of roof bolts (10, 12) each having a tendon (10.1, 10.2) anchored in a rock mass (22) by grout (14, 16). The method includes the steps of applying an acoustic signal to the system, detecting the acoustic response(s) of the tendon(s) and assessing the installation quality of the tendon(s) from an analysis of such response(s). The invention also includes apparatus for use in the method.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: May 16, 2006
    Assignee: CSIR
    Inventors: Van Zyl Brink, Ismet Canbulat, Johann Haarhoff
  • Patent number: 7004370
    Abstract: The invention relates to a device and method for determining parameters of a welding system. According to the invention, a welding area (18, 21, 22) is subjected to the action of ultrasonic waves, preferably to the action of shear waves, by using an ultrasound source (14). During a first welding process (n1), a signal processing (30) determines a first ultrasonic permeability (Dn1) from a received ultrasonic signal (UE). During at least one subsequent welding process (n2), a second ultrasonic permeability (Dn2) is determined from an ultrasonic signal (UE) that is received during a renewed exposure of the welding area (18, 21, 22) to ultrasonic waves. A display (32) and/or a diagnostic function and/or a correction of control quantities of the welding system is/are carried out as a function of the at least two ultrasonic permeabilities (Dn1, Dn2).
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: February 28, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Volker Arndt, Klaus Offterdinger, Walter Pasdzior
  • Patent number: 6857553
    Abstract: A method for determining the quality of an examined weld joint comprising the steps of providing acoustical data from the examined weld joint, and performing a neural network operation on the acoustical data determine the quality of the examined weld joint produced by a friction weld process. The neural network may be trained by the steps of providing acoustical data and observable data from at least one test weld joint, and training the neural network based on the acoustical data and observable data to form a trained neural network so that the trained neural network is capable of determining the quality of a examined weld joint based on acoustical data from the examined weld joint. In addition, an apparatus having a housing, acoustical sensors mounted therein, and means for mounting the housing on a friction weld device so that the acoustical sensors do not contact the weld joint. The apparatus may sample the acoustical data necessary for the neural network to determine the quality of a weld joint.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: February 22, 2005
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Daniel A. Hartman, Vivek R. Dave' , Mark J. Cola, Robert W. Carpenter
  • Publication number: 20040221653
    Abstract: Method of producing a bonded wire connection between an electronic component or a subassembly and a carrier by introducing energy from an ultrasound transducer into a wire that is to be bonded. According to this method, during the introduction of energy the impedance of the ultrasound transducer is measured as a function of time. The shape of the curve representing this time dependence is evaluated on the basis of a pre-specified comparison criteria, and the power input to the ultrasound transducer and/or a bond weight exerted on the wire is/are controlled in dependence on the result of this evaluation. A device usable for carrying out this method is also described.
    Type: Application
    Filed: June 8, 2004
    Publication date: November 11, 2004
    Inventor: Farhad Farassat
  • Publication number: 20040123665
    Abstract: A nondestructive method of and apparatus for detecting degradation of reinforcing members embedded within a structure is disclosed. Degradation can arise from many sources, such as corrosion, fracture, cracking, fatigue, chemical reaction, etc. The device includes an inducing instrument(210) to induce a vibration of the reinforcing members (110)and a measuring device (220) to detect the vibration of the reinforcing members. The measurement is analyzed to detect the presence of reinforcing member degradation or reinforcing member-to-concrete bonding. The device may include a controller (230) to enhance the detection. The device may also include an amplifier (240) to further increase the energy in the waves imparted to the structure and the acoustic waves detected by the measuring instrument.
    Type: Application
    Filed: March 31, 2003
    Publication date: July 1, 2004
    Inventors: David W. Blodgett, George L Vojtech
  • Publication number: 20040107774
    Abstract: The invention relates to a device for evaluating signals comprising a signal detection unit (26) that detects a measurement signal (UE). A measured value evaluation unit (43) evaluates measurement signals (UE) located inside a measurement window (TM1, TM2, TS1, TS2). Means (35), (37), (39) are provided for establishing the measurement window (TM1, TM2, TS1, TS2) and they establish the measurement window (TM1, TM2, TS1, TS2) according to the measurement signal (UE).
    Type: Application
    Filed: February 5, 2004
    Publication date: June 10, 2004
    Inventor: Volker Arndt
  • Patent number: 6745629
    Abstract: A method of producing a bonded wire connection between an electronic component or a subassembly and a carrier by introducing energy from an ultrasound transducer into a wire that is to be bonded. According to this method, during the introduction of energy the impedance of the ultrasound transducer is measured as a function of time. The shape of the curve representing this time dependence is evaluated on the basis of a pre-specified comparison criteria, and the power input to the ultrasound transducer and/or a bond weight exerted on the wire is/are controlled in dependence on the result of this evaluation. A device usable for carrying out this method is also described.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 8, 2004
    Assignee: F&K Delvotec Bondtechnik GmbH
    Inventor: Farhad Farassat
  • Publication number: 20040025593
    Abstract: The invention provides an acoustic diagnosis/measurement apparatus/method using a pulse of electromagnetic force, capable of non-destructively and precisely diagnosing or measuring corrosion, adhesion, the. cover depth, and/or the diameter of a reinforcing iron rod in a structure made of reinforced concrete. A coil 12 is attached to a surface of a structure 11 including a conductor 11a and a non-conductive material 11b covering the conductor 11a. A current pulse is applied to the coil 12 thereby generating a magnetic field pulse. The magnetic field pulse causes an eddy current to be induced in the conductor 11a. The conductor 11a is oscillated by interaction between the eddy current and the magnetic field pulse. As a result, an acoustic signal is generated by the conductor 11a and the acoustic signal is converted into an eclectic signal by an acoustic transducer 14 disposed to the surface of the structure 11.
    Type: Application
    Filed: May 14, 2003
    Publication date: February 12, 2004
    Inventors: Mitsuo Hashimoto, Masanori Takanabe
  • Patent number: 6684700
    Abstract: A sensor is disclosed specifically for detecting stress waves for use in a stress wave analysis system. The stress waves-are preferably detected in a narrow frequency range of 35-40KHz. At this range, stress waves from friction and impact sources typically propagate through machine structures at detectable amplitudes. In order to maximize the signal to noise ratio of stress waves, relative to background noise and vibration, the sensor of the present invention is designed and calibrated with a frequency response and damping features that are specifically tailored for stress wave analysis.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: February 3, 2004
    Assignee: Swantech, L.L.C.
    Inventor: David B. Board
  • Publication number: 20030167846
    Abstract: Method of producing a bonded wire connection between an electronic component or subassembly and a carrier by introducing energy from an ultrasound transducer into a wire that is to be bonded, wherein during the introduction of energy the impedance of the ultrasound transducer is measured as a function of time, the shape of the curve representing this time dependence is evaluated on the basis of prespecified comparison criteria, and the power input to the ultrasound transducer and/or a bond weight exerted on the wire is/are controlled in dependence on the result of this evaluation.
    Type: Application
    Filed: May 31, 2002
    Publication date: September 11, 2003
    Inventor: Farhad Farassat
  • Patent number: 6613169
    Abstract: Thermoplastic welding is an emerging technology targeted at significantly reducing the manufacturing cost of aerospace structure by eliminating fasteners and the touch labor associated with fasteners to prepare, install, and inspect the assemblies. Quality welds are highly dependent upon achieving appropriate temperatures everywhere along the bond line. The present invention is a system that evaluates the quality of the welds involving inputting an EM pulse to the embedded susceptor and listening to the acoustic response that the pulse generates to determine weld quality from the sound.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: September 2, 2003
    Assignee: The Boeing Company
    Inventors: Gary E. Georgeson, Larry E. Dolan
  • Patent number: 6439447
    Abstract: When electrodes on an electronic component and electrode portions on a circuit board are joined via bumps with the electronic component and the circuit board vibrated respectively, a vibration damping detect device and a deciding device detect damping of the vibration caused by a progress of joining between the bumps and the electrode portions, and then determine a good or defective of the joining on a basis of the damping of the vibration. Further, regarding an impedance of an ultrasonic oscillator, a movement amount of a nozzle, or a current supplying to a VCM, these waveforms during the joining are compared with waveforms of good joining thereof and then the good or defective is determined. According to the above constructions, the good or defective of the joining between the electronic component and the circuit board can be determined during the joining. Further, when a joining state becomes wrong during the joining, the joining state can be changed.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 27, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shozo Minamitani, Kazushi Higashi, Kenji Takahashi, Shinji Kanayama, Hiroshi Wada, Takafumi Tsujisawa, Makoto Akita, Kenji Okamoto, Shinzo Eguchi, Yasuhiro Kametani
  • Patent number: 6414260
    Abstract: A welding electrode with a configuration (2) for the ultrasound introduction for the testing of weld joints, in particular resistance welded joints, comprises an ultrasound transmitter for the impingement of the welding region with ultrasonic waves and an ultrasound receiver disposed at a spacing from the welding region, for the reception of the ultrasonic waves passed through the welding region. To provide a welding electrode which is simple in structure, which is suitable for an impingement of the welding region with longitudinal ultrasonic waves, the ultrasound transmitter radiates the ultrasonic waves axially into the welding electrode (4) or axially or obliquely into a channel (42) of the welding electrode which is filled with a medium transmitting sound.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: July 2, 2002
    Inventor: Göran Vogt
  • Patent number: 6260415
    Abstract: A material, such as a fiber composite material, has embedded inside at least one, preferably more, surface acoustic wave filters of piezoelectric material for receiving testing energy in a wireless manner and for retransmitting a material quality signal in a wireless manner which is evaluated in a system that has a wireless transmitter for sending testing energy into a material and a wireless receiver for receiving the material quality signal which is then processed and evaluated by a respective processor of the testing system. An output of the processor provides information regarding the nature and quality of the material tested and of the presence and location of any material faults that may be displayed on display screen.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: July 17, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Johann Goebel, Andreas Mittelbach
  • Patent number: 6220097
    Abstract: A device for detecting hidden delaminations in a structure subject to hidden delaminations comprising a rotary percussion tool head adapted at an end thereof to connect to an extension pole, wherein said head comprises at least one circular member, each circular member having on the periphery thereof projections extending in the radial direction and spaced apart in the circumferential direction, and a method of using same.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: April 24, 2001
    Inventor: Philip Clark
  • Patent number: 6037180
    Abstract: A method for measuring the quantity of a polymeric or pre-polymeric composition within a given volume that includes combining the polymeric or pre-polymeric composition with a plurality of microparticles having a non-ferromagnetic or non-ferrimagnetic core provided with a coating that is ferromagnetic, ferrimagnetic, or conductive, to form an admixture in which the microparticles are substantially uniformly dispersed throughout the composition. The microparticles have a detectable electromagnetic characteristic which correlates with the amount of the composition within a given volume. The electromagnetic characteristic of the microparticles is then measured to determine the quantity of the composition within a given volume.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: March 14, 2000
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Elaine M. Yorkgitis, Craig S. Chamberlain
  • Patent number: 6026687
    Abstract: An apparatus for testing and stress relieving metal components comprising a vibration means (28), attachment means (30), control means (2) and measuring means (13,31), the attachment means (28) being configured and arranged to, in use, directly vibration couple the vibration means (28) to a metal component (40), the control means (2) controlling actuation of the vibration means (28), and the measuring means (13,31), in use, measuring the amplitude of vibration in the said metal component (29).
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: February 22, 2000
    Inventor: Brent Felix Jury
  • Patent number: 5696326
    Abstract: An objective and non-destructive test of the fused joints in an armature, that can be used on every armature being manufactured on an armature manufacturing line, as well as apparatus for performing that test, are provided. The armature is immersed in an acoustic coupling medium. Acoustic pulses, preferably ultrasonic pulses, are beamed onto the commutator tang/wire interface region of a commutator tang/bar fused joint or the fused joint itself and an acoustic signature is measured. The quality of the joint can be determined by comparing the acoustic signature to a predetermined acoustic signature of known quality. A testing station on an armature production line includes a mechanism for removing the armature from the production line, immersing it in the coupling medium, and rotating it as each joint in the commutator of that armature is checked.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 9, 1997
    Assignee: Axis USA, Inc.
    Inventors: Antonio Becherucci, Dalibor Kirov