Improved precision of absolute thermal-expansion measurements for ULE glass
Improved precision of absolute thermal-expansion measurements for ULE glass
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提高 ULE 玻璃绝对热膨胀测量的精度
DOI：
10.1117/12.258287
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Deborah E. Morton
中科院分区：
文献类型：
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作者：
M. J. Edwards;Emily H. Bullock;Deborah E. Morton
康宁公司使用的超声波热膨胀测量方法的改进显著提高了ULETM玻璃的绝对热膨胀测量精度。需要精确的CTE数据来模拟8米镜坯的性能。对在整个8米过程中进行的许多测量进行了几项重复性和再现性研究。随后改进了测量设备和程序，以获得所需的精度。总结了在制造3块8米镜坯过程中收集到的大量绝对CTE数据，取得了良好的效果。文中还给出了与以前证明的精度的比较。
Improvements made in the ultrasonic thermal expansion measurement methods used at Corning Incorporated have significantly increased the precision of absolute CTE measurements on ULETM glass. Precise CTE data were required for modeling the performance of 8-meter mirror blanks. Several repeatability and reproducibility studies for many of the measurements performed throughout the 8- meter process were performed. Measurement equipment and procedures were then improved to obtain the required precision. A volume of absolute CTE data collected during the manufacture of three 8-meter mirror blanks is summarized, showing excellent results. Comparison with previously demonstrated precision is also given.