Hull monitoring apparatus and method
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United States of America Patent
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-
Jun 20, 1995
Issued Date -
N/A
app pub date -
May 21, 1993
filing date -
Jun 1, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For detecting strains or breaks in the surface of a boat hull or other structure, the surface is covered with non-intersecting lengths of tape adhered to the surface. The tape has an inner strip of conductive elastomer and an outer strip of the same material, and between them a corrugated layer of copper foil. Both strips and the foil are insulated from each other and the outside. The strips and foil layer are connected to electrical resistance and capacitance measuring devices, which monitor any changes in the electrical properties of the tape lengths, caused by strain or breaking of the surface. Because of the corrugations, the foil will not change its resistance when the tape is elongated or compressed.
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