Multiplexed Fiber Optic Sensor System for Structural Health Monitoring of Ships

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-11-C-0437
Agency Tracking Number: N101-095-0026
Amount: $499,944.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: N101-095
Solicitation Number: 2010.1
Small Business Information
CA, Santa Clara, CA, 95054-1008
DUNS: 877452664
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Behzad Moslehi
 CEO/CTO
 (408) 565-9004
 bm@ifos.com
Business Contact
 Behzad Moslehi
Title: CEO/CTO
Phone: (408) 565-9004
Email: bm@ifos.com
Research Institution
 Stub
Abstract
In Phase I, IFOS demonstrated the feasibility of developing a high-speed, configurable and highly distributed load monitoring system based on fiber-optic sensor technology. Specifically, IFOS demonstrated static and dynamic load testing capability for 50 sensors on a large cantilever beam with 200Hz/sensor sampling using an innovative multiplexing scheme. In Phase II, IFOS will develop and deliver a scaled-up prototype system designed for smooth transition into Navy platforms, to operate reliably with durability in sea environments. The system will monitor a minimum span of 400ft with high sensitivity (<µstrain) and large dynamic range using miniature cost-effective non-intrusive sensors. This reconfigurable, adaptive and scalable system can accommodate 512 sensors with excellent frequency response. The innovative IFOS approach involves a small and rugged interrogator with parallel photonic signal processing using integrated-optics, ruggedized fiber sensing cables with embedded fiber Bragg gratings (FBGs) and advanced algorithms with robust and user-friendly software. Other attributes include EMI resistance, ease of use and low maintenance. Phase II will include testing and delivery of a dynamically reconfigurable fiber-optic sensor system, validation tests conducted with a prime contractor during Option 1, followed by sea trials during Option 2.

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

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