Innovative Capability to Quantify Fatigue Damage and Assessment of Endurance Limit in Spectrum Load Histories

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$149,192.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
N68335-11-C-0054
Award Id:
n/a
Agency Tracking Number:
N102-113-0540
Solicitation Year:
2010
Solicitation Topic Code:
N102-113
Solicitation Number:
2010.2
Small Business Information
3190 Fairview Park Drive, Suite 650, Falls Church, VA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
010983174
Principal Investigator:
Nagaraja Iyyer
Director of Engineer - Fa
(703) 237-1300
niyyer@tda-i.com
Business Contact:
G. Bradfield
President
(703) 237-1300
sbradfield@tda-i.com
Research Institution:
Stub




Abstract
Develop analytical and empirical formulations based on critical test data for reliable fatigue and crack growth life predictions of long spectrum histories involving high frequency small amplitude vibratory loading cycles. Extend these formulations to account for surface conditions, treatments and finishes, and residual stresses. Incorporate these analytical formulations in Navy programs such as FAMS, FASTRAN, and UNIGROW for reliable fatigue and crack life predictions. Investigate improvements to existing voice-coil servo-hydraulic technology and other alternative accelerated fatigue test techniques for application to spectrum loading with high-frequency content on commonly used test laboratory specimens. Develop necessary software and hardware for improved fatigue testing at high frequencies involving servo-valve and other technologies by closely working with a test machine manufacturer.

* information listed above is at the time of submission.

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