Patents by Inventor Rajashekar Venkatachalam

Rajashekar Venkatachalam 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).

  • METHOD FOR AUTOMATIC IDENTIFICATION OF DEFECTS IN TURBINE ENGINE BLADES
    Publication number: 20090066939
    Abstract: A method for automatically identifying defects in turbine engine blades is provided. The method comprises acquiring one or more radiographic images corresponding to one or more turbine engine blades and identifying one or more regions of interest from the one or more radiographic images. The method then comprises extracting one or more geometric features based on the one or more regions of interest and analyzing the one or more geometric features to identify one or more defects in the turbine engine blades.
    Type: Application
    Filed: September 7, 2007
    Publication date: March 12, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Rajashekar Venkatachalam, Mahesh Kumar Asati, Prakash Mandayam Comare, Megha Navalgund, Xiaoming Liu, Robert August Kaucic, Joseph Manuel Portaz, Manoharan Venugopal
  • Converting a digital radiograph to an absolute thickness map
    Patent number: 7480363
    Abstract: A digital radiography imaging system for acquiring digital images of an object, and a method for transforming digital images into an absolute thickness map characterizing the object under inspection. The system includes a radiation source for directing radiation through a desired region of the object, and a radiation detector having a plurality of sensing elements for detecting radiation passing through the object. Numerical data generated from each sensing element is calibrated, for example by correcting for variations in radiation paths between the source and detector, by correcting for variations in the spatial frequency response (MTF) of the detector, by correcting for variations in the geometric profile of the object under inspection, and by correcting for material contained in and/or around the object. The calibrated data is processed in order to generate and display an absolute thickness map of the object.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: January 20, 2009
    Assignee: GE Betz, Inc.
    Inventors: Brian W. Lasiuk, Thomas J. Batzinger, Manoharan Venugopal, Elizabeth L. Dixon, Michael R. Hopple, Nityanand Gopalika, Sivaramanivas Ramaswamy, Debasish Mishra, Rajashekar Venkatachalam, Vamishi Krishna Reddy Kommareddy
  • Converting a digital radiograph to an absolute thickness map
    Publication number: 20060058974
    Abstract: A digital radiography imaging system for acquiring digital images of an object, and a method for transforming digital images into an absolute thickness map characterizing the object under inspection. The system includes a radiation source for directing radiation through a desired region of the object, and a radiation detector having a plurality of sensing elements for detecting radiation passing through the object. Numerical data generated from each sensing element is calibrated, for example by correcting for variations in radiation paths between the source and detector, by correcting for variations in the spatial frequency response (MTF) of the detector, by correcting for variations in the geometric profile of the object under inspection, and by correcting for material contained in and/or around the object. The calibrated data is processed in order to generate and display an absolute thickness map of the object.
    Type: Application
    Filed: April 18, 2005
    Publication date: March 16, 2006
    Applicant: GE Betz, Inc.
    Inventors: Brian Lasiuk, Thomas Batzinger, Manoharan Venugopal, Elizabeth Dixon, Michael Hopple, Nityanand Gopalika, Sivaramanivas Ramaswamy, Debasish Mishra, Rajashekar Venkatachalam, Vamshi Reddy Kommareddy