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Hybrid Structures for Improved Damage Tolerance of Unitized Structures

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
90195
Program Year/Program:
2009 / STTR
Agency Tracking Number:
F08B-T07-0168
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
ALPHA STAR
5150 E. PACIFIC COAST HWY SUITE # 650 LONG BEACH, CA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2009
Title: Hybrid Structures for Improved Damage Tolerance of Unitized Structures
Agency / Branch: DOD / USAF
Contract: FA9550-09-C-0177
Award Amount: $99,998.00
 

Abstract:

Recent developments of advanced hybrid metallic structural concepts have been extremely promising for durable light-weight and ultra-long fatigue life large transport aircraft. The Alpha STAR team (Alcoa, SWRI, and Virginia Tech) proposes to extend the validated Fiber Metal Laminate (FML) high fidelity analytical capability from GLARE to CentrAl FML concepts, as well as develop the necessary robust design optimization techniques. Candidate ultra-long life approaches will be conceptualized and demonstrated on aerospace structural components. A building block verification strategy will be conducted. Observed test data will be compared with analytical predictions for unnotched/notched coupons under service loading conditions; static, fatigue crack initiation/propagation/residual strength, and thermal fatigue. In Phase I, the team will validate the analytical tools with 5 stringer panel fuselage/lower wing test data under static and fatigue spectrum loadings. Our effort will lead to a robust design development and demonstration in Phase II of a unique FML stiffened panel concept to reduce weight and eliminate delamination. This effort will expand the current GLARE applications from biaxial loading conditions, such as the Airbus-380 upper-fuselage, to CentrAl applications for a wider range of aircraft components, such as the lower wing cover. BENEFIT: Recent developments of advanced hybrid metallic structural concepts have been extremely promising for durable light-weight and ultra-long fatigue life large transport aircraft. The Alpha STAR team (Alcoa, SWRI, and Virginia Tech) proposes to extend the validated Fiber Metal Laminate (FML) high fidelity analytical capability from GLARE to CentrAl FML concepts, as well as develop the necessary robust design optimization techniques. Candidate ultra-long life approaches will be conceptualized and demonstrated on aerospace structural components. A building block verification strategy will be conducted. Observed test data will be compared with analytical predictions for unnotched/notched coupons under service loading conditions; static, fatigue crack initiation/propagation/residual strength, and thermal fatigue. In Phase I, the team will validate the analytical tools with 5 stringer panel fuselage/lower wing test data under static and fatigue spectrum loadings. Our effort will lead to a robust design development and demonstration in Phase II of a unique FML stiffened panel concept to reduce weight and eliminate delamination. This effort will expand the current GLARE applications from biaxial loading conditions, such as the Airbus-380 upper-fuselage, to CentrAl applications for a wider range of aircraft components, such as the lower wing cover.)

Principal Investigator:

Frank Abdi
CTO
5629851100
FABDI@ALPHASTARCORP.COM

Business Contact:

Kay Matin
PRESIDENT
5629851100
KMATIN@ALPHASTARCORP.COM
Small Business Information at Submission:

ALPHA STAR
5199 E. PACIFIC COAST HWY SUITE # 410 LONG BEACH, CA 90804

EIN/Tax ID: 954246890
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
SOUTH WEST RESEARCH INSTITUTE
6220 Culebra Road
P.O.Drawer 28150
SAN ANTONIO, TX 78228
Contact: Dale Cope
Contact Phone: (210) 522-2415
RI Type: Domestic nonprofit research organization