Patents by Inventor Aparna Chakrapani Sheila-Vadde
Aparna Chakrapani Sheila-Vadde 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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Publication number: 20240027546Abstract: A magneto-optic imaging apparatus adapted for use with an imaging device, such as a smartphone, tablet computer, or borescope, for visually detecting defects in the surface or subsurface of a component using a magneto-optic effect. The magneto-optic imaging apparatus includes a housing with an interface for connection with the imaging device such that a camera and light source of the imaging device may be implemented for magneto-optic visualization. The housing includes optical elements including one or more filters, a polarizer, a magneto-optic or garnet film, and an analyzer. The housing also includes a flexible coil or electrical terminals for inducing a magnetic field in the component. The magneto-optic imaging apparatus may include a translucent or transparent body of conformable material or materials to conform the magneto-optic film and flexible coil to a non-planar surface of the component.Type: ApplicationFiled: October 17, 2022Publication date: January 25, 2024Inventors: Manoj Kumar Koyithitta Meethal, Vikram Melapudi, Aparna Chakrapani Sheila-Vadde, Satya Mohan Vamsi Andalam
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Patent number: 10690532Abstract: A method of determining a fraction of one or more phases in a multi-phase fluid in a conduit is provided. The method includes exciting (602) a sensing device to cause emission of electromagnetic waves of a range of frequencies into a multi-phase fluid. The sensing device comprises an antenna and a dielectric layer, selected to cause resonance in at least one of a first set of frequencies or a second set of frequencies based on a flow state of the multi-phase fluid, when placed proximate to the multi-phase fluid. The method also includes receiving (604) transmitted or reflected electromagnetic waves from the multi-phase fluid. The flow state of the multi-phase fluid is selected (606) based on a classification parameter. Fractions are determined (608) utilizing at least one fraction determination model that is selected based on the flow state of the multi-phase fluid.Type: GrantFiled: October 14, 2015Date of Patent: June 23, 2020Assignee: Baker Hughes Oilfield Operations LLCInventors: Prafull Sharma, Aparna Chakrapani Sheila-Vadde, Suma Memana Narayana Bhat, Vikram Melapudi
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Patent number: 10309910Abstract: A method of determining salinity of multi-phase fluids in a conduit includes exciting a sensing device to cause emission of electromagnetic waves of one or more frequencies into the multi-phase fluid. The method includes receiving transmitted or reflected electromagnetic waves from the multi-phase fluid. Furthermore, the method includes determining an intermediate parameter from the received electromagnetic waves. The method also includes obtaining estimated values of a plurality of parameters from the intermediate parameter. The estimated values comprise at least one of an estimated value of conductance, an estimated value of susceptance, an estimated value of differential conductance, an estimated value of differential susceptance, an estimated value of a real part of complex permittivity, and an estimated value of an imaginary part of complex permittivity. Salinity of the fluid is determined based, at least in part, on the estimated values of the plurality of parameters.Type: GrantFiled: November 10, 2015Date of Patent: June 4, 2019Assignee: General Electric CompanyInventors: Prafull Sharma, Aparna Chakrapani Sheila-Vadde
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Patent number: 9909911Abstract: A method for determining a phase composition of a multiphase mixture flowing through a pipe is presented. The method includes exciting one or more patch antennas configured to operate over the range of frequencies. Further, the method includes acquiring at least one of a transmitted signal and a reflected signal over the range of frequencies from the one or more patch antennas. Moreover, the method includes estimating the phase composition of the multiphase mixture based on a group delay determined from at least one of the transmitted signal and the reflected signal. A system for determining a phase composition of a multiphase mixture flowing through a pipe is also presented.Type: GrantFiled: June 3, 2014Date of Patent: March 6, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Aparna Chakrapani Sheila-Vadde, Prafull Sharma, Manoj Kumar Koyithitta Meethal, Vikram Reddy Melapudi
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Patent number: 9863893Abstract: A material constituent sensor includes one or more metamaterial assisted antennas located to probe a material that is a multiphase composition. A signal source excites at least one metamaterial assisted antenna in a desired range of radio frequency (RF) signals, a desired range of microwave signals, or a combination RF signals and microwave signals. A data processing device is programmed to estimate material constituent fractions associated with the probed material based on amplitude data, phase data, frequency shift data, or a combination of amplitude data, phase data and frequency shift data in response to transmitted energy from at least one excited metamaterial assisted antenna, reflected energy received by at least one metamaterial assisted antenna, frequency shift data, or a combination of the transmitted energy, the reflected energy and the frequency shift.Type: GrantFiled: May 29, 2013Date of Patent: January 9, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Praful Sharma, Manoj Kumar Koyithitta Meethal, Aparna Chakrapani Sheila-Vadde, Suma Memana Narayana Bhat, Vipin Velayudhan
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Publication number: 20170322064Abstract: A method of determining a fraction of one or more phases in a multi-phase fluid in a conduit is provided. The method includes exciting (602) a sensing device to cause emission of electromagnetic waves of a range of frequencies into a multi-phase fluid. The sensing device comprises an antenna and a dielectric layer, selected to cause resonance in at least one of a first set of frequencies or a second set of frequencies based on a flow state of the multi-phase fluid, when placed proximate to the multi-phase fluid. The method also includes receiving (604) transmitted or reflected electromagnetic waves from the multi-phase fluid. The flow state of the multi-phase fluid is selected (606) based on a classification parameter. Fractions are determined (608) utilizing at least one fraction determination model that is selected based on the flow state of the multi-phase fluid.Type: ApplicationFiled: October 14, 2015Publication date: November 9, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: Prafull SHARMA, Aparna Chakrapani Sheila-Vadde, Suma Memana Narayana BHAT, Vikram MELAPUDI
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Publication number: 20160131601Abstract: A method of determining salinity of multi-phase fluids in a conduit includes exciting a sensing device to cause emission of electromagnetic waves of one or more frequencies into the multi-phase fluid. The method includes receiving transmitted or reflected electromagnetic waves from the multi-phase fluid. Furthermore, the method includes determining an intermediate parameter from the received electromagnetic waves. The method also includes obtaining estimated values of a plurality of parameters from the intermediate parameter. The estimated values comprise at least one of an estimated value of conductance, an estimated value of susceptance, an estimated value of differential conductance, an estimated value of differential susceptance, an estimated value of a real part of complex permittivity, and an estimated value of an imaginary part of complex permittivity. Salinity of the fluid is determined based, at least in part, on the estimated values of the plurality of parameters.Type: ApplicationFiled: November 10, 2015Publication date: May 12, 2016Inventors: Prafull SHARMA, Aparna Chakrapani SHEILA-VADDE
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Publication number: 20150097579Abstract: A material constituent sensor includes one or more metamaterial assisted antennas located to probe a material that may be a multiphase composition. A signal source excites at least one metamaterial assisted antenna in a desired range of radio frequency (RF) signals, a desired range of microwave signals, or a combination RF signals and microwave signals. A data processing device is programmed to estimate material constituent fractions associated with the probed material based on amplitude data, phase data, frequency shift data, or a combination of amplitude data, phase data and frequency shift data in response to transmitted energy from at least one excited metamaterial assisted antenna, reflected energy received by at least one metamaterial assisted antenna, frequency shift data, or a combination of the transmitted energy, the reflected energy and the frequency shift.Type: ApplicationFiled: May 29, 2013Publication date: April 9, 2015Inventors: Praful Sharma, Manoj Kumar Koyithitta Meethal, Aparna Chakrapani Sheila-Vadde, Suma Memana Narayana Bhat, Vipin Velayudhan
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Patent number: 8884614Abstract: Present embodiments include eddy current array probes having differential coils capable of detecting both long and short flaws in a test specimen and, additionally or alternatively, multiplexed drive coils. For example, an eddy current array probe may include a first plurality of eddy current channels disposed in a first row and a second plurality of eddy current channels disposed in a second row. The first plurality and second plurality of eddy current channels overlap in a first direction but do not overlap in a second direction. The probe also includes a semi-circular drive coil disposed proximate to the first plurality and second plurality of eddy current channels and configured to generate a probing magnetic field for each sense coil of the eddy current channels.Type: GrantFiled: October 31, 2011Date of Patent: November 11, 2014Assignee: General Electric CompanyInventors: Changting Wang, Yuri Alexeyevich Plotnikov, Mandar Diwakar Godbole, Aparna Chakrapani Sheila-Vadde
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Patent number: 8855947Abstract: Various methods of metering a multi-phase composition in a pipe using patch antenna(s), that operate in a radio or microwave frequency range, are disclosed including locating and then exciting the patch antenna(s) over a range of frequencies; measuring transmitted and reflected signals over time; estimating a shift in a resonant frequency from a baseline resonant frequency; then calculating a permittivity of the composition, based on the shift; and calculating a phase composition of the multi-phase composition. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: GrantFiled: October 29, 2010Date of Patent: October 7, 2014Assignee: General Electric CompanyInventors: Aparna Chakrapani Sheila-Vadde, Prafull Sharma, Manoj Kumar Koyithitta Meethal, Mandar Diwakar Godbole
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Publication number: 20140260659Abstract: A method for determining a phase composition of a multiphase mixture flowing through a pipe is presented. The method includes exciting one or more patch antennas configured to operate over the range of frequencies. Further, the method includes acquiring at least one of a transmitted signal and a reflected signal over the range of frequencies from the one or more patch antennas. Moreover, the method includes estimating the phase composition of the multiphase mixture based on a group delay determined from at least one of the transmitted signal and the reflected signal. A system for determining a phase composition of a multiphase mixture flowing through a pipe is also presented.Type: ApplicationFiled: June 3, 2014Publication date: September 18, 2014Applicant: General Electric CompanyInventors: Aparna Chakrapani Sheila-Vadde, Prafull Sharma, Manoj Kumar Koyithitta Meethal, Vikram Reddy Melapudi
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Patent number: 8710834Abstract: The invention provides a drive coil and measurement probe comprising the drive coil. The measurement probes can be used, for example, in in-situ, non-destructive testing methods, also provided herein.Type: GrantFiled: August 28, 2010Date of Patent: April 29, 2014Assignee: General Electric CompanyInventors: Andrzej Michal May, Waseem Ibrahim Faidi, Changting Wang, Nilesh Tralshawala, Aparna Chakrapani Sheila-Vadde, Mandar Diwakar Godbole, Jamie Thomas Livingston, Steven Haines Olson, Howard Daniel Driver
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Patent number: 8436608Abstract: A multi-frequency eddy current (MFEC) inspection system is provided for inspection of case hardening depth on a part. The MFEC inspection system comprises a generator configured to generate one or more multi-frequency excitation signals and an eddy current probe configured to be disposed at one side of the part. The eddy current probe comprises one or more drivers and one or more pickup sensors. The one or more drivers are configured to receive the one or more multi-frequency excitation signals to induce eddy currents in the part. The one or more pickup sensors are configured to detect the induced eddy currents within a local area of the part to generate one or more multi-frequency response signals. The MFEC system further comprises a processor configured to receive the one or more multi-frequency response signals for processing to determine a case hardening depth of the local area of the part. A pulse eddy current inspection system and an eddy current inspection method are also presented.Type: GrantFiled: September 21, 2009Date of Patent: May 7, 2013Assignee: General Electric CompanyInventors: Haiyan Sun, Yuri Alexeyevich Plotnikov, Changting Wang, Shridhar Champaknath Nath, Aparna Chakrapani Sheila-Vadde
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Publication number: 20130106409Abstract: Present embodiments include eddy current array probes having differential coils capable of detecting both long and short flaws in a test specimen and, additionally or alternatively, multiplexed drive coils. For example, an eddy current array probe may include a first plurality of eddy current channels disposed in a first row and a second plurality of eddy current channels disposed in a second row. The first plurality and second plurality of eddy current channels overlap in a first direction but do not overlap in a second direction. The probe also includes a semi-circular drive coil disposed proximate to the first plurality and second plurality of eddy current channels and configured to generate a probing magnetic field for each sense coil of the eddy current channels.Type: ApplicationFiled: October 31, 2011Publication date: May 2, 2013Applicant: General Electric CompanyInventors: Changting Wang, Yuri Alexeyevich Plotnikov, Mandar Diwakar Godbole, Aparna Chakrapani Sheila-Vadde
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Patent number: 8378668Abstract: A method of non-destructive testing that employs composite systems that include a curable resin and detectable particles that have a property that can be distinguished from a property of the resin is disclosed. Array probes useful in the method also are disclosed.Type: GrantFiled: November 29, 2008Date of Patent: February 19, 2013Assignee: General Electric CompanyInventors: Waseem Ibrahim Faidi, Changting Wang, Stephane Renou, Shu Ching Quek, Nilesh Tralshawala, Aparna Chakrapani Sheila-Vadde, Peter J. Fritz
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Apparatus and method for improved transient response in an electromagnetically controlled X-ray tube
Patent number: 8284900Abstract: An x-ray tube assembly includes a vacuum enclosure including a cathode portion, a target portion, and a throat portion. The throat portion includes a magnetic field section, upstream section, and downstream section. The magnetic field section has a first susceptibility to generate eddy currents in the presence of a magnetic field intensity. The upstream section is coupled to the cathode portion and the magnetic field section and has a second susceptibility to generate eddy currents in the presence of the magnetic field intensity. The downstream section is coupled to the magnetic field section and has a third susceptibility to generate eddy currents in the presence of the magnetic field intensity. The first susceptibility to generate eddy currents is less than the second and third susceptibilities to generate eddy currents. The assembly includes a target within the target portion, and a cathode within the cathode portion.Type: GrantFiled: October 26, 2010Date of Patent: October 9, 2012Assignee: General Electric CompanyInventors: Carey Shawn Rogers, Mark Alan Frontera, Ethan James Westcot, Aparna Chakrapani Sheila-Vadde, Peter Andras Zavodszky -
Apparatus and method for improved transient response in an electromagnetically controlled X-ray tube
Patent number: 8280007Abstract: An x-ray tube assembly includes a vacuum enclosure having a cathode portion, a target portion, and a throat portion comprising a non-electrically conductive tube. The throat portion has an upstream end coupled to the cathode portion and a downstream end coupled to the target portion. The x-ray tube assembly also includes a target positioned within the target portion of the vacuum enclosure, and a cathode positioned within the cathode portion of the vacuum enclosure. The cathode is configured to emit a stream of electrons through the throat portion toward the target.Type: GrantFiled: October 26, 2010Date of Patent: October 2, 2012Assignee: General Electric CompanyInventors: Carey Shawn Rogers, Mark Alan Frontera, Ethan James Westcot, Aparna Chakrapani Sheila-Vadde, Peter Andras Zavodszky -
APPARATUS AND METHOD FOR IMPROVED TRANSIENT RESPONSE IN AN ELECTROMAGNETICALLY CONTROLLED X-RAY TUBE
Publication number: 20120099700Abstract: An x-ray tube assembly includes a vacuum enclosure including a cathode portion, a target portion, and a throat portion. The throat portion includes a magnetic field section, upstream section, and downstream section. The magnetic field section has a first susceptibility to generate eddy currents in the presence of a magnetic field intensity. The upstream section is coupled to the cathode portion and the magnetic field section and has a second susceptibility to generate eddy currents in the presence of the magnetic field intensity. The downstream section is coupled to the magnetic field section and has a third susceptibility to generate eddy currents in the presence of the magnetic field intensity. The first susceptibility to generate eddy currents is less than the second and third susceptibilities to generate eddy currents. The assembly includes a target within the target portion, and a cathode within the cathode portion.Type: ApplicationFiled: October 26, 2010Publication date: April 26, 2012Inventors: Carey Shawn Rogers, Mark Alan Frontera, Ethan James Westcot, Aparna Chakrapani Sheila-Vadde, Peter Andras Zavodszky -
APPARATUS AND METHOD FOR IMPROVED TRANSIENT RESPONSE IN AN ELECTROMAGNETICALLY CONTROLLED X-RAY TUBE
Publication number: 20120099701Abstract: An x-ray tube assembly includes a vacuum enclosure having a cathode portion, a target portion, and a throat portion comprising a non-electrically conductive tube. The throat portion has an upstream end coupled to the cathode portion and a downstream end coupled to the target portion. The x-ray tube assembly also includes a target positioned within the target portion of the vacuum enclosure, and a cathode positioned within the cathode portion of the vacuum enclosure. The cathode is configured to emit a stream of electrons through the throat portion toward the target.Type: ApplicationFiled: October 26, 2010Publication date: April 26, 2012Inventors: Carey Shawn Rogers, Mark Alan Frontera, Ethan James Westcot, Aparna Chakrapani Sheila-Vadde, Peter Andras Zavodszky -
Publication number: 20110196625Abstract: Various methods of metering a multi-phase composition in a pipe using patch antenna(s), that operate in a radio or microwave frequency range, are disclosed including locating and then exciting the patch antenna(s) over a range of frequencies; measuring transmitted and reflected signals over time; estimating a shift in a resonant frequency from a baseline resonant frequency; then calculating a permittivity of the composition, based on the shift; and calculating a phase composition of the multi-phase composition. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: ApplicationFiled: October 29, 2010Publication date: August 11, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Aparna Chakrapani Sheila-Vadde, Prafull Sharma, Manoj Kumar Koyithitta Meethal, Mandar Diwakar Godbole