Inconel Blisk Repair Technology

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$79,935.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
N68335-08-C-0174
Award Id:
87507
Agency Tracking Number:
N081-034-0245
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
698 SW Port Saint Lucie Blvd, Suite 105, Port Saint Lucie, FL, 34953
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
114133213
Principal Investigator:
Bryant Walker
Program Manager
(772) 343-7544
Bryanthwalk@aol.com
Business Contact:
Bryant Walker
President
(772) 343-7544
Bryanthwalk@aol.com
Research Institution:
n/a
Abstract
State-of-the-art military turbine engines incorporate Integral Bladed Rotors (IBR), which are one piece components consisting of blades and a disk (blisks), in the compression system. Their purpose is to reduce weight through part count reduction and improve performance and maintainability. However, to maintain affordability, the need for weld repairs of either partial or full blades is warranted to avoid expensive IBR/blisk replacements resulting from foreign object damage (FOD) to the airfoils. No adequate technology exists today to repair fielded engines. For alloys commonly used in fans and compressors, current pre- and/or post-weld heat treatment practices, as part of the repair of airfoils, result in unacceptable micro-structural degradation in the highly stressed disk portion of the IBRs/blisks. Exposing the undamaged airfoils to needless heat treatment at every repair leads to significant reduction in their structural capability. Thus a novel and enabling weld repair technology that will permit independent repair and optimization of airfoil and disk material properties is proposed to retain and restore the high cycle fatigue (HCF) characteristics of IBRs/blisks. The proposed technology has the potential to meet these requirements in addition to addressing affordability and maintainability requirements of advanced military propulsion power plants.

* information listed above is at the time of submission.

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