High-Temperature Fiber Grating Technologies for In Situ Interrogation of Damage States in Structural Materials

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$100,000.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
FA8650-05-M-5215
Award Id:
72992
Agency Tracking Number:
F051-136-0054
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
650 Vaqueros Ave., Suite A, Sunnyvale, CA, 94085
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
877452664
Principal Investigator:
Behzad Moslehi
CEO/CTO
(408) 328-8610
bm@ifos.com
Business Contact:
Behzad Moslehi
CEO/CTO
(408) 328-8648
bm@ifos.com
Research Institute:
n/a
Abstract
Fiber optic gratings are critical components for advanced multi-point sensor systems that can be used to assess the remaining lifetime of components in highly complex mechanical systems. . Standard gratings, however, degrade at temperatures below the melting point of glass. Thus, the gratings lose their sensing capability in thermally harsh environments. To respond to the Air Force's need for in situ harsh environment sensing technologies to interrogate material and damage states for engine, airframe, and hot structure components, Intelligent Fiber Optic Systems (IFOS) is proposing a grating writing method to significantly extend the operating range of grating-based sensors to temperatures close to the melting point of glass. IFOS will develop a robust high-temperature grating fabrication process and design a multi-point sensor system to demonstrate survivability and operation at high temperatures. The system, which will include a compact interrogator, can simultaneously measure strain, vibration, acceleration, and temperature. The system can be deployed for physical as well as chemical and bio-agents sensing, and is thus applicable to gases in combustion environments and high temperature spectroscopy. It allows for distributed and remote measurement in harsh environments. Sensor readout is accomplished at extremely high speed and high resolution using secure fiber optic links.

* information listed above is at the time of submission.

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