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Proceedings Paper

Safe handling of 8-m mirror blanks during manufacture: equipment designs based on finite element analyses of stresses
Author(s): William R. Powell; Stephen R. Ormsby; Mary J. Edwards
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Paper Abstract

The manufacturing of 8-meter mirror blanks by Corning's hex seal process requires several handling steps, including lifting and turnover of both plano and contoured configurations. Special equipment was designed and built to lift and turn these 35-ton, 27-foot diameter pieces of glass. Finite Element Analysis was used to evaluate the lifting and turnover equipment designs and the handling processes. The analyses predicted the stress and distortion in the glass. The results showed that the equipment designs and processes would be safe; that is they would not stress the glass beyond the safe design stress limits.

Paper Details

Date Published: 25 August 1998
PDF: 10 pages
Proc. SPIE 3352, Advanced Technology Optical/IR Telescopes VI, (25 August 1998); doi: 10.1117/12.319319
Show Author Affiliations
William R. Powell, Corning Inc. (United States)
Stephen R. Ormsby, Corning Inc. (United States)
Mary J. Edwards, Corning Inc. (United States)


Published in SPIE Proceedings Vol. 3352:
Advanced Technology Optical/IR Telescopes VI
Larry M. Stepp, Editor(s)

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