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

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0054
Agency Tracking Number: N102-113-0540
Amount: $149,192.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: N102-113
Solicitation Number: 2010.2
Small Business Information
3190 Fairview Park Drive, Suite 650, Falls Church, VA, -
DUNS: 010983174
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Nagaraja Iyyer
 Director of Engineer - Fa
 (703) 237-1300
 niyyer@tda-i.com
Business Contact
 G. Bradfield
Title: President
Phone: (703) 237-1300
Email: 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. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government