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DTIC ADA303058: Design Considerations for Stretch Conductors in Oce... |
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by Defense Technical Information Center |
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A copper conductor formed into a helical configuration |
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like a telephone cord can stretch by extending its |
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geometry without elongating the conductor itself. This |
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report establishes the proper configuration of copper |
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conductors arranged in a helical pattern around a fiber |
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core which can be used as center of a nylon rope with at |
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least 20 percent working stretch. The calculation |
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procedure allows the determination of the conductor's |
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helix angle or pitch as function of the required assembly |
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elongation, the cable assembly's geometry, and the fiber |
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core's Poisson ratio. Limits of the geometry are |
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established to assure defined flexibility of the cable |
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assembly to allow bending of a surrounding fiber rope |
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without conductor layer blockage. A sample stretch |
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conductor assembly was procured and initial testing is |
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described, proving the calculation method's ability to |
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determine the correct geometry of the conductor assembly. |
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Such conductor assemblies can be used as conductive core |
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of nylon ropes suitable for coastal and deepsea buoy |
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moorings or as lift or trigger lines for instrumentation. |
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They are also considered the most suitable configuration |
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which can endure the high stretch requirements of |
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embedded conductors in a stretch hose wall at its |
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transition into a coupling section. |
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Date Published: 2018-03-25 22:58:51 |
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Identifier: DTIC_ADA303058 |
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Item Size: 25176297 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Paul, Walter; WOODS HOL... |
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