1 May 1994 Development of microbend sensors for pressure, load, and displacement measurements in civil engineering
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Abstract
We are developing low cost, rugged, and reliable fiberoptic sensors to meet current and future needs in civil engineering, including those of smart civil structures. Our work has concentrated on load, pressure, and displacement sensors, including pore water pressure sensors. We have built and demonstrated sensors in the laboratory with loads up to 50 lb., water pressures of 100 psi, and displacements up to 1 mm. Repeatability of sensor measurements are within 5% and are being improved with continued development. The range and sensitivity of the sensors can be easily changed without changing the basic sensor design. We also have multiplexed two water pressure sensors on a single fiber. We describe the sensor construction and experimental performance.
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Barry G. Grossman, Paul J. Cosentino, Shinobu Doi, Girish Kumar, John Verghese, "Development of microbend sensors for pressure, load, and displacement measurements in civil engineering", Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); doi: 10.1117/12.173938; https://doi.org/10.1117/12.173938
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