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Non-Contact Process to Enhance the Fatigue Life of Aluminum Cold Worked…

Award Information

Agency:
Department of Defense
Branch:
N/A
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
N111-012-1563
Solicitation Year:
2011
Solicitation Topic Code:
N111-012
Solicitation Number:
2011.1
Small Business Information
Gatekey Engineering, Inc.
PO Box 456 Canal Winchester, OH -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2011
Title: Non-Contact Process to Enhance the Fatigue Life of Aluminum Cold Worked Fastener Holes
Agency: DOD
Contract: N68335-11-C-0247
Award Amount: $79,974.00
 

Abstract:

Aircraft wing skins contain thousands of fastener holes, which can act as crack initiation sites for structures under severe fatigue conditions. Major cracks have developed around aircraft fastener holes, which can propagate into larger cracks and possible result in catastrophic failure. Compressive residual stresses have been shown to improve fatigue performance for a variety of applications. Current methods of inducing compressive residual stresses in the fastener holes, using cold expansion, do not completely retard the formation and growth of cracks at the entry surface of the holes, since stresses there are lower than at the middle and exit. Gatekey Engineering, Inc., proposes to develop and demonstrate the feasibility of using Electromagnetic Pulse (EM/P) expansion processing to provide deep compressive residual stresses at the entry surface of the hole.

Principal Investigator:

James Dydo
CTO/Principal Engineer
(614) 828-4072
jrdydo@gatekeyengineering.com

Business Contact:

James Dydo
CTO/Principal Engineer
(614) 828-4072
jrdydo@gatekeyengineering.com
Small Business Information at Submission:

Gatekey Engineering, Inc.
PO Box 456 Canal Winchester, OH -

EIN/Tax ID: 261723738
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No