Patents by Inventor Shant Kenderian
Shant Kenderian 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).
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Patent number: 11926104Abstract: A build plate may include one or more thermocouples placed on an underside of the build plate. The one or more thermocouples output temperature fluctuation to assist in monitoring for build plate separation of a product located on top of the build plate.Type: GrantFiled: May 13, 2022Date of Patent: March 12, 2024Assignee: THE AEROSPACE CORPORATIONInventors: Shant Kenderian, Joseph T. Case
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Publication number: 20240020890Abstract: Self-determined shot geometry for open-configuration portable x-ray computed tomography (CT) includes capturing one or more x-ray shot images into a computing system, and estimating an unknown constellation model and one or more shot geometries. It also includes reconstructing a volume image from the one or more captured shot images and the one or more geometries using computed tomography.Type: ApplicationFiled: October 31, 2022Publication date: January 18, 2024Applicant: The Aerospace CorporationInventors: Joseph T. CASE, Shant KENDERIAN
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Publication number: 20240020881Abstract: A method for self-determination of shot geometry for use in open-configuration portable x-ray computed tomography (CT) includes inputting one or more x-ray shot images into a computing system. The method also include determining, by the computing system, one or more shot geometries from the one or more inputted x-ray shot images. The method further includes reconstructing, by the computing system, a volume image from the one or more inputted x-ray shot images and the one or more shot geometries. The method also includes outputting, by the computing system, a reconstructed volume image.Type: ApplicationFiled: July 13, 2022Publication date: January 18, 2024Applicant: The Aerospace CorporationInventors: Joseph T. CASE, Shant KENDERIAN
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Publication number: 20220266532Abstract: A build plate may include one or more thermocouples placed on an underside of the build plate. The one or more thermocouples output temperature fluctuation to assist in monitoring for build plate separation of a product located on top of the build plate.Type: ApplicationFiled: May 13, 2022Publication date: August 25, 2022Applicant: The Aerospace CorporationInventors: Shant Kenderian, Joseph T. Case
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Patent number: 11396045Abstract: A build plate may include one or more thermocouples placed on an underside of the build plate. The one or more thermocouples output temperature fluctuation to assist in monitoring for build plate separation of a product located on top of the build plate.Type: GrantFiled: March 11, 2019Date of Patent: July 26, 2022Assignee: THE AEROSPACE CORPORATIONInventors: Shant Kenderian, Tait DeWitt McLouth, Joseph T. Case, Dhruv N. Patel
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Publication number: 20200290121Abstract: A build plate may include one or more thermocouples placed on an underside of the build plate. The one or more thermocouples output temperature fluctuation to assist in monitoring for build plate separation of a product located on top of the build plate.Type: ApplicationFiled: March 11, 2019Publication date: September 17, 2020Inventors: Shant KENDERIAN, Tait DeWitt MCLOUTH, Joseph T. CASE, Dhruv N. PATEL
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Patent number: 10495609Abstract: An ultrasonic inspection technique may be used to inspect quality of a bond between thermal protection system (TPS) material and a composite. The technique may include a highly damped transducer emitting an incident wave, which may traverse through thermal protection system (TPS) material and to a back wall of a composite. The incident wave may be of a low frequency signal, and may return a bondline echo and a backwall echo. The bondline echo is returned when the incident wave reaches a bondline and the backwall echo is returned when the incident wave reaches the backwall of the composite. The bondline echo and the backwall echo may be used to generate a waveform to assess the bond quality, revealing possible unbonds or kissing unbonds.Type: GrantFiled: October 18, 2016Date of Patent: December 3, 2019Assignee: The Aerospace CorporationInventors: Yong Min Kim, Joseph T Case, Shant Kenderian
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Publication number: 20180315236Abstract: A portable x-ray computed tomography (CT) system may utilize algebraic reconstruction techniques (ART) to produce 3D volume images from tens of shots or less. The system may be deployed as desired where x-ray source and detector positions are not known beforehand. A fast, accurate matrix may be formed relating voxels to detector pixels via a modified ray tracing algorithm, eliminating artifacts caused by approaches using rough approximations. Masking or recombination may be performed to remove detector pixels that are not part of a region of interest (ROI) or lump the pixels together as one unknown, significantly reducing matrix size, and hence, computation time. The positions and orientations of the x-ray source and detector may be treated as unknowns and refined to optimize a volume image metric. For example, the optimized metric could be image contrast, image sparsity, or total variation.Type: ApplicationFiled: April 26, 2017Publication date: November 1, 2018Applicant: The Aerospace CorporationInventors: Joseph T. Case, Shant Kenderian, Eric C. Johnson
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Patent number: 10096148Abstract: A portable x-ray computed tomography (CT) system may utilize algebraic reconstruction techniques (ART) to produce 3D volume images from tens of shots or less. The system may be deployed as desired where x-ray source and detector positions are not known beforehand. A fast, accurate matrix may be formed relating voxels to detector pixels via a modified ray tracing algorithm, eliminating artifacts caused by approaches using rough approximations. Masking or recombination may be performed to remove detector pixels that are not part of a region of interest (ROI) or lump the pixels together as one unknown, significantly reducing matrix size, and hence, computation time. The positions and orientations of the x-ray source and detector may be treated as unknowns and refined to optimize a volume image metric. For example, the optimized metric could be image contrast, image sparsity, or total variation.Type: GrantFiled: April 26, 2017Date of Patent: October 9, 2018Assignee: The Aerospace CorporationInventors: Joseph T. Case, Shant Kenderian, Eric C. Johnson
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Publication number: 20180106765Abstract: An ultrasonic inspection technique may be used to inspect quality of a bond between thermal protection system (TPS) material and a composite. The technique may include a highly damped transducer emitting an incident wave, which may traverse through thermal protection system (TPS) material and to a back wall of a composite. The incident wave may be of a low frequency signal, and may return a bondline echo and a backwall echo. The bondline echo is returned when the incident wave reaches a bondline and the backwall echo is returned when the incident wave reaches the backwall of the composite. The bondline echo and the backwall echo may be used to generate a waveform to assess the bond quality, revealing possible unbonds or kissing unbonds.Type: ApplicationFiled: October 18, 2016Publication date: April 19, 2018Inventors: Yong Min Kim, Joseph T. Case, Shant Kenderian
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Publication number: 20060201253Abstract: A system for ultrasonic inspection of railroad axles uses a laser to project a series of pulses onto the axle to create an ultrasonic signal propagating along the surface of the axle. An air-coupled detector detects the ultrasonic signal at a position on the axle spaced apart from the laser impact region. The ultrasonic signal can then be analyzed to detect the presence of a reflected wave indicating the presence of a defect in the axle.Type: ApplicationFiled: March 13, 2006Publication date: September 14, 2006Inventors: Kari Gonzales, Richard Morgan, Shant Kenderian, James Bilodeau
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Patent number: 6945114Abstract: Formed Laser Sources (FLS) using pulsed laser light for generation of ultrasonic stress waves are combined with air-coupled detection of ultrasound to provide for the hybrid non-contact, dynamic and remote ultrasonic testing of structural materials, especially railroad tracks. Using this hybrid technique, multimode and controlled frequency and wavefront surface acoustic waves, plate waves, guided waves, and bulk waves are generated to propagate on and within the rail tracks. The non-contact, remote nature of this methodology enables high-speed, fill access inspections of rail tracks. The flexibility and remote nature of this methodology makes possible the detection of critical cracks that are not easy, or impossible to detect, with current inspection techniques available to the railroad industry.Type: GrantFiled: May 30, 2003Date of Patent: September 20, 2005Assignee: The Johns Hopkins UniversityInventors: Shant Kenderian, B. Boro Djordjevic, Robert E. Green, Jr., Donatella Cerniglia
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Patent number: 6862936Abstract: A remote, non-contact system for detecting a defect in a railroad wheel as the wheel is stationary or moving along a railroad track includes; (1) a pulsed, laser light source for generating an ultrasonic wave in the wheel, the ultrasonic wave having a direct portion and reflected and transmitted portions if the direct portion encounters a defect in the wheel, (2) an optical component in the path of the light from the light source for forming the light into a specified illumination pattern so that the generated ultrasonic wave has a specified wavefront, (3) an air-coupled transducer or a group of transducers for sensing the acoustic signal emanating from the wheel that results from the ultrasonic wave traveling through the wheel, and (4) a signal processor, responsive to the sensed acoustic signal, capable of distinguishing whether the sensed signal has a component that indicates the existence of a reflected portion in the ultrasonic wave, wherein the presence of such a component in the acoustic signal indicatType: GrantFiled: August 8, 2003Date of Patent: March 8, 2005Assignee: The Johns Hopkins UniversityInventors: Shant Kenderian, B. Boro Djordjevic, Donatella Cerniglia
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Publication number: 20040056496Abstract: A remote, non-contact system for detecting a defect in a railroad wheel as the wheel is stationary or moving along a railroad track includes; (1) a pulsed, laser light source for generating an ultrasonic wave in the wheel, the ultrasonic wave having a direct portion and reflected and transmitted portions if the direct portion encounters a defect in the wheel, (2) an optical component in the path of the light from the light source for forming the light into a specified illumination pattern so that the generated ultrasonic wave has a specified wavefront, (3) an air-coupled transducer or a group of transducers for sensing the acoustic signal emanating from the wheel that results from the ultrasonic wave traveling through the wheel, and (4) a signal processor, responsive to the sensed acoustic signal, capable of distinguishing whether the sensed signal has a component that indicates the existence of a reflected portion in the ultrasonic wave, wherein the presence of such a component in the acoustic signal indicatType: ApplicationFiled: August 8, 2003Publication date: March 25, 2004Applicant: The Johns Hopkins UniversityInventors: Shant Kenderian, B. Boro Djordjevic, Donatella Cerniglia
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Publication number: 20040003662Abstract: Formed Laser Sources (FLS) using pulsed laser light for generation of ultrasonic stress waves are combined with air-coupled detection of ultrasound to provide for the hybrid non-contact, dynamic and remote ultrasonic testing of structural materials, especially railroad tracks. Using this hybrid technique, multimode and controlled frequency and wavefront surface acoustic waves, plate waves, guided waves, and bulk waves are generated to propagate on and within the rail tracks. The non-contact, remote nature of this methodology enables high-speed, full access inspections of rail tracks. The flexibility and remote nature of this methodology makes possible the detection of critical cracks that are not easy, or impossible to detect, with current inspection techniques available to the railroad industry. For purpose of field testing, the equipment of the present invention can be located above the top surface of the rail.Type: ApplicationFiled: May 30, 2003Publication date: January 8, 2004Applicant: The Johns Hopkins UniversityInventors: Shant Kenderian, B. Boro Djordjevic, Robert E. Green, Donatella Cerniglia