Anand A Kulkarni

US Patent:

7298818, Nov 20, 2007

Filed:

Oct 4, 2005

Appl. No.:

11/243370

Inventors:

Ramesh Subramanian - Oviedo FL, US
Anand A. Kulkarni - Orlando FL, US

Assignee:

Siemens Power Generation, Inc. - Orlando FL

International Classification:

G01B 15/06

US Classification:

378 58, 25039002, 2503581

Abstract:

Methodologies for non-destructively inspecting and characterizing micro-structural features in a thermal barrier coating (TBC) on a component, wherein the micro-structural features define pores and cracks, if any, in the TBC. The micro-structural features having characteristics at least in part based on a type of process used for developing the TBC and affected by operational thermal loads to which a TBC is exposed. In one embodiment, the method allows detecting micro-structural features in a TBC, wherein the detecting of the micro-structural features is based on energy transmitted through the TBC, such as may be performed with a micro-feature detection system. The transmitted energy is processed to generate data representative of the micro-structural features, such as may be generated by a controller. The data representative of the micro-structural features is processed (e. g. , by a processor ) to determine at least one of the following: volumetric porosity information for the TBC and variation in the characteristics of the micro-structural features over a thickness of the TBC.

US Patent:

7368827, May 6, 2008

Filed:

Sep 6, 2006

Appl. No.:

11/516338

Inventors:

Anand A. Kulkarni - Orlando FL, US
Ramesh Subramanian - Oviedo FL, US

Assignee:

Siemens Power Generation, Inc. - Orlando FL

International Classification:

F01D 15/10
F02C 6/00
H02K 7/18
H02P 9/04

US Classification:

290 52

Abstract:

An electrical assembly for use in various operating environments such as a casing of a combustion turbine is provided. The assembly may include an electrical energy-harvesting device disposed in a component within the casing of the turbine to convert a form of energy present within the casing to electrical energy. The harvesting device is configured to generate sufficient electrical power for powering one or more electrical devices therein without assistance from an external power source. One example of electrical devices wholly powered by the energy harvesting device may be a sensor connected for sensing a condition of the component within the casing during operation of the combustion turbine. Another example of electrical devices wholly powered by the energy harvesting device may be a transmitter in communication with the sensor for wirelessly transmitting the data signal outside the casing.

US Patent:

7376518, May 20, 2008

Filed:

Oct 4, 2005

Appl. No.:

11/242664

Inventors:

Ramesh Subramanian - Oviedo FL, US
Anand A. Kulkarni - Orlando FL, US

Assignee:

Siemens Power Generation, Inc. - Orlando FL

International Classification:

G06F 19/00

US Classification:

702 27

Abstract:

System and computer program product for non-destructively inspecting and characterizing micro-structural features in a thermal barrier coating (TBC) on a component, wherein the micro-structural features define pores and cracks, if any, in the TBC. The micro-structural features having characteristics at least in part based on a type of process used for developing the TBC and affected by operational thermal loads to which a TBC is exposed. In one embodiment, the method allows detecting micro-structural features in a TBC, wherein the detecting of the micro-structural features is based on energy transmitted through the TBC, such as may be performed with a micro-feature detection system. The transmitted energy is processed to generate data representative of the micro-structural features, such as may be generated by a controller. The data representative of the micro-structural features is processed (e. g. , by a processor ) to determine at least one of the following: volumetric porosity information for the TBC and variation in the characteristics of the micro-structural features over a thickness of the TBC.

US Patent:

7507484, Mar 24, 2009

Filed:

Dec 1, 2006

Appl. No.:

11/607343

Inventors:

Anand A. Kulkarni - Orlando FL, US
Ramesh Subramanian - Oviedo FL, US
Andrew J. Burns - Orlando FL, US

Assignee:

Siemens Energy, Inc. - Orlando FL

International Classification:

B32B 15/04

US Classification:

428632, 428633, 428678, 416241 R, 416241 B

Abstract:

A thermal barrier coating (TBC) system () capable of self-healing has a substrate (), a metal-based advanced bond coat () overlying the substrate and a ceramic top coat () overlying the bond coat. The bond coat () comprises ceramic oxide precursor materials capable of forming a non-alumina ceramic oxide composition when exposed to a thermally conditioning oxidizing environment. Embodiments of such bond coat () comprise rare earth elements in a range of 1-20 weight percent, and Hf in a range of about 5 to 30 weight percent or Zr in a range of about 2 to 20 weight percent. Examples of self-healing TBC systems () are provided using such bond coat () or its advanced bond coat chemistries in combination with conventional bond coats () or conventional bond coat chemistries.

US Patent:

7541005, Jun 2, 2009

Filed:

Oct 6, 2005

Appl. No.:

11/244739

Inventors:

Anand A. Kulkarni - Orlando FL, US
Christian X. Campbell - Orlando FL, US
Ramesh Subramanian - Oviedo FL, US

Assignee:

Siemens Energy Inc. - Orlando FL

International Classification:

B01D 50/00

US Classification:

422177

Abstract:

A catalyst element () for high temperature applications such as a gas turbine engine. The catalyst element includes a metal substrate such as a tube () having a layer of ceramic thermal barrier coating material () disposed on the substrate for thermally insulating the metal substrate from a high temperature fuel/air mixture. The ceramic thermal barrier coating material is formed of a crystal structure populated with base elements but with selected sites of the crystal structure being populated by substitute ions selected to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a higher rate than would the base compound without the ionic substitutions. Precious metal crystallites may be disposed within the crystal structure to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a lower light-off temperature than would the ceramic thermal barrier coating material without the precious metal crystallites.

US Patent:

7582359, Sep 1, 2009

Filed:

Nov 8, 2005

Appl. No.:

11/269043

Inventors:

Stephen M. Sabol - Orlando FL, US
Ramesh Subramanian - Oviedo FL, US
Anand A. Kulkarni - Orlando FL, US

Assignee:

Siemens Energy, Inc. - Orlando FL

International Classification:

B32B 9/00

US Classification:

428469, 428472, 428701, 702182

Abstract:

A component for use in a combustion turbine () is provided that includes a substrate () and a microelectromechanical system (MEMS) device () affixed to the substrate (). At least one connector () may be deposited in electrical communication with the MEMS device () for routing a data signal from the MEMS device () to a termination location (). A barrier coating () may be deposited on the substrate () wherein the MEMS device () is affixed beneath a surface of the barrier coating (). A plurality of trenches () may be formed in the barrier coating () at respective different depths below the surface of the barrier coating () and a MEMS device () deposited within each of the plurality of trenches (). A monitoring system () is provided that may include a processing module () programmed for receiving data from the MEMS device ().

US Patent:

7618712, Nov 17, 2009

Filed:

Nov 8, 2005

Appl. No.:

11/269044

Inventors:

Stephen M. Sabol - Orlando FL, US
Ramesh Subramanian - Oviedo FL, US
Anand A. Kulkarni - Orlando FL, US

Assignee:

Siemens Energy, Inc. - Orlando FL

International Classification:

B32B 9/00

US Classification:

428469, 428472, 428210

Abstract:

A component for use in a combustion turbine () is provided that includes a substrate () and an abradable coating system () deposited on the substrate (). A planar proximity sensor () may be deposited beneath a surface of the abradable coating system () having circuitry () configured to detect intrusion of an object () into the abradable coating system (). A least one connector () may be provided in electrical communication with the planar proximity sensor () for routing a data signal from the planar proximity sensor () to a termination location (). A plurality of trenches () may be formed at respective different depths below the surface of the abradable coating system () with a planar proximity sensor () deposited within each of the plurality of trenches (). A processing module () may be programmed for receiving data from the planar proximity sensor () and calculating a clearance between a row of blades () within a combustion turbine and the planar proximity sensor (). The processing module () may control a clearance between the row of blades () and a ring segment () based on data received from the planar proximity sensors ().

US Patent:

7846561, Dec 7, 2010

Filed:

Jan 25, 2008

Appl. No.:

12/019931

Inventors:

Anand A. Kulkarni - Oviedo FL, US

Assignee:

Siemens Energy, Inc. - Orlando FL

International Classification:

B32B 9/00

US Classification:

428702, 428323, 428688, 428689, 428697, 428699, 428701, 428820

Abstract:

A ceramic coating for imparting one or more of a variety of functional characteristics (e. g. , reducing vibration levels) to one or more components or portions of an engine (e. g. , ring segments, transition ducts, combustors, blades, vanes and shrouds of a turbine engine, portions thereof, and portions of a diesel engine), the components or portions comprising such a coating, and methods of making same. The ceramic coating exhibits a gradient or other change in the functional characteristic(s) through the thickness of the coating, across the surface area of the coating or both.

Address:

9420 Ardrey Wood Dr, Charlotte, NC 28277

VIN:

JN8AZ1MU0BW064279

Make:

NISSAN

Model:

MURANO

Year:

2011