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6 June 1997 Detection and location of point perturbations over a two-dimensional area using two spatially weighted distributed fiber optic sensors
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Abstract
The ability to detect, localize and characterize disturbances in real time is of considerable importance for structures, particularly in light of the increasing use of high performance composite materials with unconventional and often catastrophic failure modes. In this paper, we present the results of a follow on investigation to previous work that demonstrated that use of two spatially weighted distributed fiber optic sensors to detect, localize and characterize impacts along an extended linear region. The results presented here represent an extension of that technique from one to two dimensions. Two long co-located sensors with differing and varying sensitivities to perturbations along their lengths were configured in different 2D patterns with their sensitivity distributions optimized via a genetic algorithm. The ability of these sensor patterns to detect and localize point disturbances on a plate were determined experimentally and compared. Finally, particular applications in which this technique might be beneficially utilized are identified and discussed.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William B. Spillman Jr. and Dryver R. Huston "Detection and location of point perturbations over a two-dimensional area using two spatially weighted distributed fiber optic sensors", Proc. SPIE 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation, (6 June 1997); https://doi.org/10.1117/12.275727
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