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Measuring Small Strains with the ODiSI B

Short Summary
Discusses results from a simple experiment that was performed to demonstrate the capability of measuring very small strains using Luna’s ODiSI B fiber sensing system. 
Abstract

A simple experiment was performed to demonstrate the capability of measuring very small strains using Luna’s ODiSI B fiber sensing system. A simple Aluminum cantilever beam was instrumented with an optical fiber sensor along the length of one side of the beam. A small deflection was caused by placing a screw near the tip of the beam. Oscillations were also applied and allowed to dampen. Results show that strain changes of 100 nanostrain can be easily detected. With a 10 cm gage length and 25 Hz bandwidth, the standard deviation of the strain data was 30 nanostrain.

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Measuring Small Strains with the ODiSI B

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