General Electric Company

Unison Industries, Inc.

Indian Institute of Science

Srinivasan Swaminathan

Shalini Thimmegowda

Ravindra Shankar Ganiger

Anand Madihalli Srinivasan

David Raju Yamarthi

Steven Douglas Johnson

Deepak Trivedi

Vidyashankar Ramasastry Buravalla

Yanzhe Yang

Narendra Anand Hardikar

Emily Marie Phelps

Dattu G V Jonnalagadda

Prateek Jalan

Ramana Reddy Kollam

Richa Awasthi

Merin Sebastian

Amit Goyal

Grant Robert Portune

Bhanu Kishore Battu

Guru Venkata Dattu Jonnalagadda

Ambarish Ghosh

Chandrashekhar Kandukuri

Arindam Ghosh

Himanshu Gupta

Vishwanath Thippeswamy

K G V Siva Kumar

Shalabh Saxena

Sridhar Pakanati

Gayathri Honnenahalli Niranjana Murthy

A high entropy alloy-based composition is provided that has the formula: (MMMMMM)CrAlYZrMowhere: each of M, M, M, M, M, and Mis a different alloying element selected from the group consisting of Ni, Co, Fe, Si, Mn, and Cu such that none of M, M, M, M, M, and Mare the same alloying element; 0.05≤a≤0.35; 0.05≤b≤0.35; 0.05≤c≤0.35; 0.05≤d≤0.35; 0.05≤e≤0.35; 0≤f≤0.35; a+b+c+d+e+f=1; 0≤x≤1; 0≤z≤1; and 0≤x+z≤1.

High entropy alloy-based compositions and bond coats formed therefrom

This disclosure is directed to seal assemblies for a turbomachine. The seal assemblies include stationary and rotating components and at least one interface between the stationary and rotating components. The seal assembly further includes a self-lubricating lattice element made of carbon or a carbon-based material. The self-lubricating lattice element may have a porous and compressible microstructure capable of retaining a liquid substance. During engine operation, the self-lubricating lattice element can compress and expel some portion of the liquid substance to form a liquid-containing layer between the rotating and stationary components of the seal assembly. Also described herein are self-lubricating wear sleeves for use in other portions of the turbomachine.

Seal assembly for a turbomachine

There is provided markers, systems, and methods for creating and utilizing a marker containing identification information. The embodiments include an identifying marker comprised of high temperature material for tracking a component in a high temperature environment. The marker may be disposed on the component such that the marker is subject to high temperatures while affixed to the component. The marker may provide the ability to track a history of the component the marker is attached to for maintenance.

System to track hot-section flowpath components in assembled condition using high temperature material markers

A turbine engine is provided. The turbine engine defines an axial direction and a radial direction, and includes: a rotor; a stator comprising a carrier; a seal assembly disposed between the rotor and the stator, the seal assembly defining a high-pressure side and a low-pressure side and comprising a plurality of seal segments, the plurality of seal segments including a seal segment having a seal face forming a fluid bearing with the rotor, a lip, and a body, the lip extending from the body along the axial direction of the turbine engine on the high-pressure side and including an outer pressurization surface along the radial direction of the turbine engine; and a seal support assembly, the seal support assembly comprising a spring arrangement extending between the carrier and the first seal segment to counter a pressure on the outer pressurization surface during operation of the turbine engine.

Seal support assembly for a turbine engine

Systems and methods for measuring the clearance gaps between rotating and stationary components of a turbomachine are provided. In one exemplary aspect, flexible and degradable sensing arrays that include a plurality of microwave sensors are utilized to sense the clearance gaps between rotating and stationary components of the turbomachine. Microwaves generated by a microwave generator are transmitted to the sensors. Upon rotation of the rotating components, the rotating components reflect the microwaves transmitted thereto. The microwave sensors capture the transmitted signal and also capture a reflected signal indicative of the transmitted signal reflected by the rotating components. The signals are then forwarded to a computing device for processing. The amplitude difference at the interference fringes between the superimposed signals is representative of the clearance gaps between the rotating and stationary components. After measuring the clearance gaps, the turbomachine may be operated and the degradable sensing array may be consumed.

System and method for measuring clearance gaps between rotating and stationary components of a turbomachine

The present disclosure discloses a method of manufacturing a structure with a wall, comprising manufacturing a structure with a wall by using additive manufacturing technology, and dissolving a surface of the wall for reducing thickness of the wall.

Method of manufacturing a fin structure for heat exchanger

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Bengaluru, India

Srinivasan Swaminathan