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Identification of Integrally Bladed Rotor (IBR) Damping

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
78988
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
F061-162-0756
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
BLADE DIAGNOSTICS CORP.
6688 Kinsman Road Pittsburgh, PA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2006
Title: Identification of Integrally Bladed Rotor (IBR) Damping
Agency / Branch: DOD / USAF
Contract: FA8650-06-M-2639
Award Amount: $99,937.00
 

Abstract:

Due to funding and scheduling limitations, current testing for different IBR damping techniques and treatments has been forced to be accomplished simultaneously on a single IBR. Just like IBRs in service, the rotors are mistuned and the modal response is highly coupled. Mistuning refers to the fact that slight manufacturing differences cause each blade to have a different natural frequency - they are mistuned. Even very small amounts of mistuning can cause some blades to vibrate much more than others. Practically, every IBR is mistuned and even small amounts of mistuning can affect the frequency response of the IBR in a way that is currently indistinguishable from damping variations. Furthermore, different damping treatments change the frequencies of the blades as well as their damping. As a result, there are currently no accurate, reliable methods for extracting the individual damping contributions of each blade from the vibratory response of an IBR. The purpose of the work proposed here is to develop such methods.

Principal Investigator:

Drew M. Feiner
Vice President,Technical Developme
4129013467
DrewFeiner@BladeDiagnostics.com

Business Contact:

Linda N. Griffin
President and CEO
4123980643
LindaNGriffin@BladeDiagnostics.com
Small Business Information at Submission:

BLADE DIAGNOSTICS CORP.
6688 Kinsman Road Pittsburgh, PA 15217

EIN/Tax ID: 201757718
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No