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Multi-Input Strength Loss Sensors for Webbing Structures

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68936-21-C-0021
Agency Tracking Number: N19B-032-0073
Amount: $799,994.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N19B-T032
Solicitation Number: 19.B
Solicitation Year: 2019
Award Year: 2021
Award Start Date (Proposal Award Date): 2021-02-02
Award End Date (Contract End Date): 2023-02-01
Small Business Information
301 1st Street SW Suite 200
Roanoke, VA 24011-1921
United States
DUNS: 627132913
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Osgar "John" Ohanian
 (540) 443-3872
Business Contact
 Maggie Hudson
Phone: (540) 769-8400
Research Institution
 New York University
 Esther Taveras
665 Broadway, Suite 801
New York, NY 10012-2331
United States

 (646) 997-3036
 Nonprofit College or University

Webbing textiles are critical to many personnel safety systems in U.S. Navy aircraft, however there are presently no viable non-destructive techniques to detect when the load strength has degraded to an unsafe level. Luna is continuing development of a multi-input approach to address this need by combining the advantages of mechanochromic dyes with embedded fiber optic sensors. Mechanochromic dyes will irreversibly record the high-watermark of strain experienced by a webbing under high levels of elongation. Secondary dyes will quantify ultraviolet light exposure and degradation. Distributed fiber optic sensors provide high-resolution, highly-sensitive measurements that detect and localize damage without affecting the integrity of the strap. Combining these technologies enables accurate assessment of the load capabilities for nylon, polyester, and Kevlar structures during their service life. During Phase I Luna teamed with New York University to demonstrate the feasibility of this innovative combination of sensing technologies. During Phase II the team will apply the sensing technology to full-scale webbings and evaluate its ability to detect strength loss due to UV exposure, heat/humidity, impact cycling, fluid contaminants, salt fog, and blowing sand. During Phase III the technology will be transitioned to the field for acceptance testing.

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

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