Optical Damage Sensors for Automated On-Wing Engine Airfoil Inspection

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-11-M-5126
Agency Tracking Number: F103-139-0151
Amount: $99,959.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: AF103-139
Solicitation Number: 2010.3
Small Business Information
8 Chrysler, Irvine, CA, -
DUNS: 188465819
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 James Trolinger
 Director of Research
 (949) 553-0688
Business Contact
 Cecil Hess
Title: President
Phone: (949) 553-0688
Email: cecilh@metrolaserinc.com
Research Institution
Two optical methods are proposed for the detection of a range of types of damage on coated and uncoated airfoils in advanced gas turbines, by means of borescope inspection of on-wing parts. The techniques are based on low coherence interferometry and luminescence spectroscopy. The Phase I work plan consists of a demonstration of the measurement capabilities, an analysis of critical components and feasible operating envelope, and a detailed Phase II design and development strategy. BENEFIT: The proposed instrumentation provides a significant advance over currently employed visual inspection of gas turbine airfoils. For instance, with thermal barrier coatings (TBCs), these techniques allow the detection and quantification of incipient spalls, delamination, and changes in TBC porosity which typically go unnoticed with visual inspection methods. The proposed methods are well suited for use with borescopes and thus provide a large potential to be developed into commercial optical diagnostics instruments for use during maintenance and inspection of advanced gas turbines.

* Information listed above is at the time of submission. *

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