Patents by Inventor Victor Giurgiutiu

Victor Giurgiutiu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10724994
    Abstract: Disclosed are composite structure health monitoring (SHM) systems that incorporate aspects of both a passive SHM system and an active SHM system. Systems provide a route for continuous monitoring to recognize potentially damaging events as well as to determine the location and intensity of damage in those instances in which the event does cause damage to the structure. Systems can provide improved monitoring with a low space and weight requirement, for instance when utilized for SHM of aircraft.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: July 28, 2020
    Assignee: University of South Carolina
    Inventors: Michael Van Tooren, Victor Giurgiutiu, Paul Ziehl, Bin Lin
  • Publication number: 20200039153
    Abstract: An in-situ fiber-optic temperature field measurement is disclosed that can allow process monitoring and diagnosis for thermoplastic composite welding and other applications. A distributed fiber-optic sensor can be permanently embedded in a thermoplastic welded structure when it is welded and left there to perform lifelong monitoring and inspection. The fiber optic sensor can include a dissolvable coating, or a coating matched to the composite material to be welded. Other applications include in-situ fiber-optic temperature field measurement on thermoset composite curing (autoclave), for thermoplastic and thermoset composites during compression molding, and for fiber-optic field measurements on freeze/thaw of large items of public health interest, such as stored or transported foodstuffs.
    Type: Application
    Filed: March 28, 2019
    Publication date: February 6, 2020
    Inventors: Victor Giurgiutiu, Michael Van Tooren, Bin Lin, Lingyu Yu, Mohammad Faisal Haider
  • Publication number: 20190353620
    Abstract: Computationally efficient, highly accurate, and cost-effective approach for detection of damage in a structure is described. Methods include a combined analysis in both global and local regions of a structure to predict the received wave signals at a location due to scattering of Lamb waves at a damage site. Through comparison of an actual received wave signal with the predicted signals, identification of damage location and/or type can be provided. Methods can be particularly beneficial when considering damage assessment in a complex structure that includes plate-like structures that include an extension off of a base plate, e.g., a stiffened structure.
    Type: Application
    Filed: April 29, 2019
    Publication date: November 21, 2019
    Applicant: INTELLIGENT AUTOMATION, INC.
    Inventors: VICTOR GIURGIUTIU, MOHAMMAD FAISAL HAIDER, BANIBRATA PODDAR
  • Publication number: 20190033263
    Abstract: The current disclosure determines if structural faults exist and extracts geometric features of the structural faults from acoustic emission waveforms, such as crack length and orientation, and can evaluate the structural faults online, during normal operation conditions.
    Type: Application
    Filed: March 13, 2018
    Publication date: January 31, 2019
    Applicant: University of South Carolina
    Inventors: Victor Giurgiutiu, Jingjing Bao, Banibrata Poddar, Md Yeasin Bhuiyan
  • Publication number: 20180335406
    Abstract: Structural health monitoring systems and methods are described that incorporate one or more acoustic black holes in a sensing capacity. The acoustic black hole provides low- or no-reflection capabilities combined with high displacement of an edge upon excitation. The sensor can be utilized to differentiate in-plane acousto-ultrasonic wave excitations from out-of-plane excitations as well as to separate the in-plane and out-of-plane components of an excitation acousto-ultrasonic wave. Sensors can incorporate features such as mode selectivity, omnidirectional sensing, frequency tunability, quasi-static strain insensitivity, and mechanical amplification.
    Type: Application
    Filed: April 12, 2018
    Publication date: November 22, 2018
    Inventors: Victor Giurgiutiu, Erik Frankforter
  • Publication number: 20170168021
    Abstract: Disclosed are composite structure health monitoring (SHM) systems that incorporate aspects of both a passive SHM system and an active SHM system. Systems provide a route for continuous monitoring to recognize potentially damaging events as well as to determine the location and intensity of damage in those instances in which the event does cause damage to the structure. Systems can provide improved monitoring with a low space and weight requirement, for instance when utilized for SHM of aircraft.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 15, 2017
    Inventors: Michael Van Tooren, Victor Giurgiutiu, Paul Ziehl, Bin Lin
  • Patent number: 9158054
    Abstract: In one aspect, the present subject matter is directed to a sensor. The sensor includes an encapsulated fiber optic sensor and a ring shaped structure. The encapsulated fiber optic sensor passes through the ring shaped structure. The ring shaped structure is configured to resonate at a predetermined frequency.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 13, 2015
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Matthieu Gresil, Roman Catalin
  • Patent number: 9089809
    Abstract: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: July 28, 2015
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Jingjing Bao, Gregory William Peterson
  • Publication number: 20150168325
    Abstract: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 18, 2015
    Inventors: Victor Giurgiutiu, Jingjing Bao, Gregory William Peterson, Glenn Rubel
  • Patent number: 8814996
    Abstract: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: August 26, 2014
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Jingjing Bao, Gregory William Peterson, Glenn Rubel
  • Publication number: 20140208950
    Abstract: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.
    Type: Application
    Filed: July 16, 2012
    Publication date: July 31, 2014
    Applicant: UNIVERSITY OF SOUTH CAROLINA
    Inventors: Victor Giurgiutiu, Jingjing Bao, Gregory William Peterson, Glenn Rubel
  • Publication number: 20120280414
    Abstract: Methods of forming a molded composite material are generally provided. A composite forming precursor (e.g., fibers and/or a resin material) can be applied onto a mold that includes a plurality of piezoelectric sensors embedded into the mold. The composite forming precursor can then be cured adjacent to the mold to form a molded composite material. During curing, the molded composite material can be monitored, using the piezoelectric sensors to detect any defects formed during curing.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 8, 2012
    Applicant: UNIVERSITY OF SOUTH CAROLINA
    Inventors: Victor Giurgiutiu, Jingjing Bao, Bin Lin
  • Patent number: 8102101
    Abstract: A piezoelectric sensor having a plurality of electrodes deposited on a single surface of the dielectric medium is generally provided. The plurality of electrodes can define a plurality of square-shaped electrodes forming a grid on the first surface of the dielectric medium while the second electrode defines a continuous electrode. An electrode border surrounding the plurality of electrodes can be deposited on the first surface of the dielectric medium. Alternatively, the plurality of electrodes can define column-shaped electrodes, while the second electrode defines a plurality of row-shaped electrodes separated by etchings. The direction of orientation of each column-shaped electrode and the direction of orientation of each row-shaped electrode can be substantially perpendicular. A method of making a piezoelectric sensor is also provided.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: January 24, 2012
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, James R. Kendall
  • Patent number: 7881881
    Abstract: Disclosed is an apparatus and methodology for structural health monitoring (SHM) in which smart devices interrogate structural components to predict failure, expedite needed repairs, and thus increase the useful life of those components. Piezoelectric wafer active sensors (PWAS) are applied to or integrated with structural components and various data collected there from provide the ability to detect and locate cracking, corrosion, and disbanding through use of pitch-catch, pulse-echo, electro/mechanical impedance, and phased array technology. Stand alone hardware and an associated software program are provided that allow selection of multiple types of SHM investigations as well as multiple types of data analysis to perform a wholesome investigation of a structure.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: February 1, 2011
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Lingyu Yu, Giola Santoni Bottai
  • Publication number: 20100132469
    Abstract: In an exemplary configuration, a system for structural health monitoring is provided. The system includes a battery-less nano-PWAS device, the device comprising an array of nano-PWAS transducers and a tag antenna.
    Type: Application
    Filed: December 1, 2009
    Publication date: June 3, 2010
    Applicant: UNIVERSITY OF SOUTH CAROLINA
    Inventors: Victor Giurgiutiu, Bin Lin
  • Publication number: 20100042338
    Abstract: Disclosed is an apparatus and methodology for structural health monitoring (SHM) in which smart devices interrogate structural components to predict failure, expedite needed repairs, and thus increase the useful life of those components. Piezoelectric wafer active sensors (PWAS) are applied to or integrated with structural components and various data collected there from provide the ability to detect and locate cracking, corrosion, and disbanding through use of pitch-catch, pulse-echo, electro/mechanical impedance, and phased array technology. Stand alone hardware and an associated software program are provided that allow selection of multiple types of SHM investigations as well as multiple types of data analysis to perform a wholesome investigation of a structure.
    Type: Application
    Filed: August 12, 2009
    Publication date: February 18, 2010
    Applicant: University of South Carolina
    Inventors: Victor Giurgiutiu, Lingyu Yu, Giola Santoni Bottai
  • Publication number: 20090188319
    Abstract: A piezoelectric sensor having a plurality of electrodes deposited on a single surface of the dielectric medium is generally provided. The plurality of electrodes can define a plurality of square-shaped electrodes forming a grid on the first surface of the dielectric medium while the second electrode defines a continuous electrode. An electrode border surrounding the plurality of electrodes can be deposited on the first surface of the dielectric medium. Alternatively, the plurality of electrodes can define column-shaped electrodes, while the second electrode defines a plurality of row-shaped electrodes separated by etchings. The direction of orientation of each column-shaped electrode and the direction of orientation of each row-shaped electrode can be substantially perpendicular. A method of making a piezoelectric sensor is also provided.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 30, 2009
    Applicant: University of South Carolina
    Inventors: Victor Giurgiutiu, James R. Kendall
  • Publication number: 20090048789
    Abstract: The present subject matter is direct to apparatus and methodologies for performing omnidirectional (360°) damage detection in a thin-wall structure using a planar embedded piezoelectric wafer active sensors (PWAS) phased array. Virtual beamforming for the array is implemented through either a transmission process by selective energizing selected sensors or by a signal post-processing procedure. Sensors may be embedded in a thin-walled structure as planar or circular arrays to achieve omnidirectional damage detection.
    Type: Application
    Filed: April 11, 2008
    Publication date: February 19, 2009
    Applicant: University of South Carolina
    Inventors: Lingyu Yu, Victor Giurgiutiu
  • Publication number: 20080288184
    Abstract: Disclosed is an apparatus and methodology for monitoring the health of a structure. Apparatus and methodologies are disclosed for applying a controlled signal sequence to an array of piezoelectric wafer active sensors and for analyzing echo returns from the applied signals to determine the health of the monitored structure. The applied signal may take on certain characteristics including being provided as a specially tailored chirp signal to compensate for non-linear characteristics of the monitored structure.
    Type: Application
    Filed: August 5, 2005
    Publication date: November 20, 2008
    Applicant: UNIVERSITY OF SOUTH CAROLINA
    Inventors: Victor Giurgiutiu, Buli Xu, Weiping Liu
  • Patent number: 7174255
    Abstract: A small, lightweight, portable, and inexpensive self-processing integrated damage assessment sensor (SPIDAS) that may be temporarily or permanently attached to a structure for structural health monitoring is provided. The SPIDAS device employs an electromechanical impedance measuring method to directly measure the high-frequency local impedance spectrum of the structure, process the electromechanical impedance data, and issue structural health reports that the device may transmit over a wireless connection.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: February 6, 2007
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Buli Xu