1 December 1991 Analysis of thermal stability of fused optical structure
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Large glass mirrors made by fusing smaller pieces together are susceptible to distortions during manufacture and temperature changes due to differences in thermal expansion within the mirror. A method of predicting the size and shape of this distortion using the finite element method of computer simulation is described. The method is verified by comparison to a set of measurements on glass samples.
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William R. Powell, "Analysis of thermal stability of fused optical structure", Proc. SPIE 1532, Analysis of Optical Structures, (1 December 1991); doi: 10.1117/12.48260; https://doi.org/10.1117/12.48260

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