12 June 2000 Instrumentation of a high-speed surface effect ship for structural response characterization during sea trials
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Abstract
We report on the instrumentation of a high-speed air-cushion catamaran (Surface Effect Ship) with more than 50 fiber optic Bragg grating strain gauges, as well as conventional resistive strain gauges, accelerometers, a Motion Reference Unit and Global Positioning System. A bow mounted wave radar was used to characterize the sea-state in order to estimate the wave loads on the hull. The relatively large number of strain gauges enabled us to determine the global deformation modes of the hull as well as local stress concentrations. This instrumentation was installed on a new Norwegian naval vessel and employed during sea-keeping tests in smooth and rough seas off the Norwegian coast. The measurements enable a detailed characterization of the vessel's dynamic response to wave loading and comparison with Finite Element Analysis modeling of the ship. The experimental results provide invaluable information for the subsequent development of a system for health monitoring of the structure. We present the instrumentation layout and selected results.
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Karianne Pran, Karianne Pran, Gregg Johnson, Gregg Johnson, Alf Egil Jensen, Alf Egil Jensen, Knut Arne Hegstad, Knut Arne Hegstad, Geir Sagvolden, Geir Sagvolden, Oystein Farsund, Oystein Farsund, Chia-Chen Chang, Chia-Chen Chang, Lex Malsawma, Lex Malsawma, Gunnar Wang, Gunnar Wang, } "Instrumentation of a high-speed surface effect ship for structural response characterization during sea trials", Proc. SPIE 3986, Smart Structures and Materials 2000: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (12 June 2000); doi: 10.1117/12.388126; https://doi.org/10.1117/12.388126
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