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- W2022250943 abstract "The 4-point flexure strength of sapphire in two different crystal orientations was measured between 227 and 600 degrees C. Two types of coupons were fabricated in a manner intended to mimic the way a hemisphere dome would be made. Bar 1 fails in tension at low temperature and from c-axis compression at elevated temperature. Bar 2 fails in tension at all temperatures. As-polished Bar 1 and Bar 2 in the present work ar only about half as strong as comparable bars from previous work. Annealing increased the strength of Bar 2 by 50 percent at all temperature and Bar 1 by 25 percent at low temperature. Annealing did not strengthen Bar 1 at 600 degrees C, at which temperature it fails in compression. A compressive coating had little effect on the strength of annealed bars." @default.
- W2022250943 created "2016-06-24" @default.
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- W2022250943 date "1999-07-26" @default.
- W2022250943 modified "2023-09-23" @default.
- W2022250943 title "<title>Navy mechanical test results from the sapphire statistical characterization and risk reduction program</title>" @default.
- W2022250943 doi "https://doi.org/10.1117/12.354640" @default.
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