FBG optical strain gage, os31000 pages
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nnnnOptical Strain Gage I os3100 §0o8°o0°oo§o§
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nnnnApplications
nnnn• Continuous lifetime health monitoring
nnnnof bridges, dams, buildings, tunnels,
nnnnships, aircraft, trains, and other complex
nnnnstructures.
nnnn• Core building block for fiber optic trans-
nnnnducers for strain, temperature, displace-
nnnnment, pressure, and acceleration.
nnnnMeasurement of strain on a structure's
nnnnsurface.
nnnn• Experimental mechanics evaluations
nnnnrequiring many sensors.
nnnnFeatures
nnnnRugged, permanent weldable package
nnnn(os3110).
nnnnRugged package fastens with same epoxy
nnnnas conventional foil strain gage (os3120).
nnnnQualified to same rigorous standards used
nnnnfor comparable electronic gages.
nnnnCable integrated with sensor package for
nnnnfiber protection and strain relief.
nnnnFast, simple, repeatable installation.
nnnnDouble ended design supports multiplex-
nnnning of many sensors on one fiber.
nnnnGage installation and protection achieved
nnnnwith same methods as conventional
nnnnelectronic gages.
nnnnMicron Optics'patented micro opto-
nnnnmechanical technology.
nnnnDescription
nnnnThe os3100 Optical Strain Gage is designed to make fiber handling easy and sensor installation
nnnnfast and repeatable. It is based on fiber Bragg grating (FBG) technology. The os3100's stainless
nnnnsteel carrier holds the FBG in tension and protects the fiber during installation. Since there are
nnnnno epoxies holding the fiber to the carrier, long term stability is ensured by design.
nnnnTwo packaging options provide for either weld or epoxy attachment to a structure's surface.
nnnnInstallation time is just a few minutes. Welded gages can be used immediately after attach-
nnnnment. Epoxy gages typically cure in less than 24 hours at room temperature, similar to elec-
nnnntronic foil strain gages.
nnnnIn side by side comparisons with foil strain gages, the os3100 is equally sensitive and accurate,
nnnnwhile providing for greater strain range and 100 times more fatigue life. The os3100 strain
nnnngage is qualified for use in harsh environments and delivers the many advantages inherent to
nnnnall FBG based sensors.
nnnnThis sensor can be used alone or in series as a part of an FBG sensor array. Installation and
nnnncabling for such arrays is much less expensive and cumbersome than comparable electronic
nnnngage networks. Multiple optical strain gages can be arranged in close proximity at 0,45 and
nnnn90 degrees for strain rosette measurements.
nnnnos3110, Spot Weld
nnnnos3120, Epoxy Mount
nnnnWith each sensor. Micron Optics provides a Sensor Information Sheet listing the gage factor
nnnnand calibration coefficients needed to convert wavelength information into engineering units.
nnnnMicron Optics' ENLIGHT Sensing Software provides a utility to calculate and then record, dis-
nnnnplay, and transmit data for large networks of sensors. Installation, qualification and other sen-
nnnnsor information is available at: http://www.micronoptics.com/support_downloads/Sensors/.
nnnnm
nnnnTUNED Products displaying the "Micron Optics Tuned" logo include Micron Optics tunable technologies ensuring high quality and performance.
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