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CONTRIBUTORS:
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PROCEEDINGS TITLE:
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YEAR:
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1978
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PUB TYPE:
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Conference Paper in Proceedings
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PAGES:
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102 -
107
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SUBJECT(S):
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Shadow moire; complex geometry involving hyperbolic parabolids; experimental approach to discerning three dimensional displacements;
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DISCIPLINE:
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Engineering and Applied Sciences
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-412-104
(Last edited on
2005/01/25 12:53:13 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
This paper is about the geometric problems encountered and resolved during a study emplying show moire techniques. Shadow moire is a useful tool for discerning out of plane displacements of a plate or shell when acted upon by external forces. In this case, we experimentally investigated the displacement of a hyperbolic paraboloid shell under load. A curved grating helped alleviate accuray problems intrinsic in the use of a plane grid, but this modification required a whole new theory based on the three-dimensional geometry of the reference grid.
This conference was held at the University of British Columbia, Vancouver, by the Engineering Design Graphics Division of the ASEE on its 50th Anniversary, June 14-18, 1978.
Editor: Garland K. Hilliard
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