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Title: Optical wear monitoring

Patent ·
OSTI ID:1273410

A gas turbine includes first and second parts having outer surfaces located adjacent to each other to create an interface where wear occurs. A wear probe is provided for monitoring wear of the outer surface of the first part, and includes an optical guide having first and second ends, wherein the first end is configured to be located flush with the outer surface of the first part. A fiber bundle includes first and second ends, the first end being located proximate to the second end of the optical guide. The fiber bundle includes a transmit fiber bundle comprising a first plurality of optical fibers coupled to a light source, and a receive fiber bundle coupled to a light detector and configured to detect reflected light. A processor is configured to determine a length of the optical guide based on the detected reflected light.

Research Organization:
SIEMENS ENERGY, INC., Orlando, FL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
NT0006833
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL)
Patent Number(s):
9,400,171
Application Number:
13/688,299
OSTI ID:
1273410
Resource Relation:
Patent File Date: 2012 Nov 29
Country of Publication:
United States
Language:
English

References (9)

Apparatus and method for monitoring steam turbine shroud clearance patent October 1989
Embedded wear sensor patent June 2000
Self monitoring static seal patent September 2003
Wear monitoring system with embedded conductors patent September 2007
Method and apparatus for quantification of optical properties of superficial volumes patent December 2007
Apparatus and method of monitoring operating parameters of a gas turbine patent September 2009
Apparatus and method of detecting wear in an abradable coating system patent November 2009
Radial gap measurement on turbines patent February 2011
High throughput measurement system patent May 2011

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