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Systematic Fatigue Test Spectrum Editing Using Wavelet Transformations

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-18-C-0747
Agency Tracking Number: N18B-029-0009
Amount: $124,893.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N18B-T029
Solicitation Number: 2018.0
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-08-31
Award End Date (Contract End Date): 2019-03-08
Small Business Information
2839 Paces Ferry Road
Atlanta, GA 30339
United States
DUNS: 961914884
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 C. Nataraj
 (610) 519-4994
Business Contact
 Janice Haley
Phone: (770) 803-3001
Research Institution
 Moira McAndrews
800 E. Lancaster Ave.
Villanova, PA 19085
United States

 (610) 519-4220
 Nonprofit College or University

Global Technology Connection, Inc., in collaboration with its academic and industrial partners, proposes to develop a software tool that will incorporate systematic wavelet-analysis-based approach for addressing fatigue in a rotary H-60 helicopter (and aerospace applications in general). This fatigue spectrum editing tool will preserve fatigue damage and minimize testing times and costs as well as account for load interaction effects and minimize clipping. The approach will utilize wavelet analysis which offers a very promising avenue for achieving accelerated fatigue testing using maximum fatigue signal compression. We will leverage advances in using wavelet analysis in automotive and wind turbine fatigue testing. Significant opportunities exist for extending these ideas to aerospace fatigue testing, particularly in multiaxial loading configurations. A systematic wavelet-analysis-based approach is possible for aerospace fatigue spectrum editing that preserves fatigue damage, minimizes testing times and costs, accounts for load interaction effects, and minimizes clipping. In Phase II, we will develop and demonstrate a prototype spectrum editing tool that will use reduced length spectra for many available aerospace fatigue profiles as well as multiaxial, non-proportional loading conditions that are validated in laboratory tests on aluminum samples and test articles. These tests will verify damage equivalency with edited and full spectra loading

* Information listed above is at the time of submission. *

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