Optical Temperature and Strain Imaging for Turbine Engine Applications

Award Information
Agency:
Department of Defense
Amount:
$949,934.00
Program:
SBIR
Contract:
FA8650-09-C-2913
Solitcitation Year:
2007
Solicitation Number:
2007.3
Branch:
Air Force
Award Year:
2009
Phase:
Phase II
Agency Tracking Number:
F073-052-0060
Solicitation Topic Code:
AF073-052
Small Business Information
MetroLaser, Inc.
8 Chrysler, Irvine, CA, 92618
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
188465819
Principal Investigator
 Bauke Heeg
 Senior Scientist
 (503) 659-1584
 bheeg@metrolaserinc.com
Business Contact
 Cecil Hess
Title: President
Phone: (949) 553-0688
Email: cecilh@metrolaserinc.com
Research Institution
N/A
Abstract
This proposal addresses the need for instrumentation that can resolve strain and temperature distributions around small features of interest on high temperature, metallic and ceramic gas turbine components with curved surfaces. Two parallel optical approaches are outlined; laser speckle metrology for measuring strain, and phosphor thermometry for measuring temperature. The proposed methods are suited for use on both coated and uncoated specimens, and will be designed around thermo-mechanical fatigue test facilities under development elsewhere. The Phase II work will bring several innovations to each of the proposed technologies. One particularly innovative aspect is the prospect of depth resolved lateral strain imaging within and through a ceramic coating. In Phase I the various technical feasibility issues have been addressed, such that the success probability of each procedure can be estimated. BENEFIT: The proposed speckle metrology systems each have significant potential for strain measurement on representative materials and structures encountered in modern high performance aerospace gas turbines. Furthermore, temperature imaging with thermographic phosphors shows the potential to have high accuracy and precision. Therefore, the combined instrumentation should enable the acquisition of thermomechanical fatigue test data in a practical and cost-effective manner that is superior to other, non-optical methods. The proposed instrumentation is sufficiently versatile to be directly applicable to a very broad range of other applied mechanical problems. As a result, a considerable commercial potential exists, and the proposed work provides an ideal opportunity to explore this.

* information listed above is at the time of submission.

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