29 July 2004 Performance characteristics of the robust laser interferometer (RLI) with respect to health monitoring needs for civil, mechanical, and aerospace infrastructure elements
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Abstract
Correct sensing provides the availability of information for health monitoring interests, including those associated with unit health, stress, diagnostics and prognostics. Data is presented from measurement projects employing a 'highly linear,' wideband (0 to hundreds of kilohertz), large dynamic range (over 180 dB demonstrated in both displacement and acceleration), non-contact, vibration and Acoustic Emissions (AE) measurement capability. The measurement capability is currently embodied in an Epoch Engineering, Inc. Research and Development (R&D) Robust Laser Interferometer (RLI). Existing data from previous measurement projects is assessed in terms of its potential to provide meaningful information for health monitoring needs in situations involving civil, mechanical and aerospace infrastructure elements. In addition to performance considerations, implementation alternatives, integration benefits, cost considerations and remaining work that would need to be accomplished for commercializing the RLI capability is presented.
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John M. Zarroli, John M. Zarroli, Martin Karchnak, Martin Karchnak, Theodore C. Goodenow, Theodore C. Goodenow, } "Performance characteristics of the robust laser interferometer (RLI) with respect to health monitoring needs for civil, mechanical, and aerospace infrastructure elements", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); doi: 10.1117/12.540052; https://doi.org/10.1117/12.540052
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