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Properties Of Glasses At Elevated Temperatures

Report Number: WADC TR 56-645 Part 7
Author: Kerper, Matthew J.
Corporate Author: National Bureau Of Standards Gaithersburg MD
Laboratory: Directorate of Materials and Processes
Date of Publication: 1962-08
Pages: 89
Contract: AF 33(616)59-4
Project: 7381
Task: 738103
AD Number: AD0286893

The ASD program to obtain useful, statistically sound, design criteria on optically transparent window materials of a brittle nature and suitable for military air vehicle applications is summarized. Several factors associated with the determination of Young's modulus and the modulus of rupture for seven commercially available glasses are presented and in erpreted. The practical strength of pl e glass is dependent on several factors including surface finish, thermal conditioning, cutting techniques and composition. Effects of these variables together with long and short time elevated temperature strength capabilities are shown.

Lockheed Martin Missiles & Fire Control
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